./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG --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 32bit --witnessprinter.graph.data.programhash b8ce9817bf2af9fbb4d5ead4864bbe971c1858c5d07938e52b657a9570c115a3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:17:38,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:17:38,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:17:38,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:17:38,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:17:38,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:17:38,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:17:38,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:17:38,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:17:38,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:17:38,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:17:38,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:17:38,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:17:38,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:17:38,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:17:38,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:17:38,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:17:38,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:17:38,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:17:38,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:17:38,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:17:38,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:17:38,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:17:38,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:17:38,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:17:38,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:17:38,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:17:38,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:17:38,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:17:38,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:17:38,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:17:38,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:17:38,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:17:38,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:17:38,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:17:38,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:17:38,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:17:38,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:17:38,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:17:38,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:17:38,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:17:38,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-29 05:17:38,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:17:38,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:17:38,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:17:38,682 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:17:38,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:17:38,683 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:17:38,683 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:17:38,683 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:17:38,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:17:38,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:17:38,684 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:17:38,684 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:17:38,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:17:38,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:17:38,685 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:17:38,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:17:38,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:17:38,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:17:38,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:17:38,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:17:38,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:17:38,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:17:38,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:17:38,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:17:38,687 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 05:17:38,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:17:38,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:17:38,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:17:38,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:17:38,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:17:38,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:17:38,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:17:38,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:17:38,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:17:38,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:17:38,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:17:38,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:17:38,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:17:38,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:17:38,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:17:38,691 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_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8ce9817bf2af9fbb4d5ead4864bbe971c1858c5d07938e52b657a9570c115a3 [2021-10-29 05:17:39,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:17:39,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:17:39,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:17:39,026 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:17:39,027 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:17:39,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-10-29 05:17:39,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/data/e36f85a09/336389214f8746c390e6476f5fb6e69a/FLAG689f1f11f [2021-10-29 05:17:39,621 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:17:39,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-10-29 05:17:39,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/data/e36f85a09/336389214f8746c390e6476f5fb6e69a/FLAG689f1f11f [2021-10-29 05:17:39,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/data/e36f85a09/336389214f8746c390e6476f5fb6e69a [2021-10-29 05:17:39,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:17:39,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:17:39,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:17:39,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:17:39,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:17:39,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:17:39" (1/1) ... [2021-10-29 05:17:39,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1357b315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:39, skipping insertion in model container [2021-10-29 05:17:39,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:17:39" (1/1) ... [2021-10-29 05:17:40,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:17:40,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:17:40,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[450,463] [2021-10-29 05:17:40,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:17:40,341 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:17:40,352 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[450,463] [2021-10-29 05:17:40,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:17:40,399 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:17:40,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40 WrapperNode [2021-10-29 05:17:40,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:17:40,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:17:40,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:17:40,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:17:40,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:17:40,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:17:40,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:17:40,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:17:40,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:17:40,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:17:40,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:17:40,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:17:40,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (1/1) ... [2021-10-29 05:17:40,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:17:40,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:17:40,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:17:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:17:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:17:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:17:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:17:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:17:41,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:17:41,763 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2021-10-29 05:17:41,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:17:41 BoogieIcfgContainer [2021-10-29 05:17:41,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:17:41,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:17:41,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:17:41,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:17:41,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:17:39" (1/3) ... [2021-10-29 05:17:41,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a1f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:17:41, skipping insertion in model container [2021-10-29 05:17:41,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:40" (2/3) ... [2021-10-29 05:17:41,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a1f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:17:41, skipping insertion in model container [2021-10-29 05:17:41,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:17:41" (3/3) ... [2021-10-29 05:17:41,776 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-10-29 05:17:41,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:17:41,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-29 05:17:41,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:17:41,831 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 [2021-10-29 05:17:41,832 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-10-29 05:17:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 69 states have (on average 1.8405797101449275) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:17:41,852 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:41,853 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:17:41,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1294639945, now seen corresponding path program 1 times [2021-10-29 05:17:41,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:41,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215247955] [2021-10-29 05:17:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:41,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:42,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:42,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215247955] [2021-10-29 05:17:42,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215247955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:42,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:42,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:42,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172687111] [2021-10-29 05:17:42,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:17:42,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:17:42,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:17:42,032 INFO L87 Difference]: Start difference. First operand has 98 states, 69 states have (on average 1.8405797101449275) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 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) [2021-10-29 05:17:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:42,070 INFO L93 Difference]: Finished difference Result 177 states and 229 transitions. [2021-10-29 05:17:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:17:42,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2021-10-29 05:17:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:42,081 INFO L225 Difference]: With dead ends: 177 [2021-10-29 05:17:42,082 INFO L226 Difference]: Without dead ends: 90 [2021-10-29 05:17:42,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:17:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-29 05:17:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-29 05:17:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.6875) internal successors, (108), 89 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-10-29 05:17:42,123 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 6 [2021-10-29 05:17:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:42,124 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-10-29 05:17:42,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2021-10-29 05:17:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-10-29 05:17:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:17:42,125 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:42,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:17:42,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:17:42,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1293309474, now seen corresponding path program 1 times [2021-10-29 05:17:42,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:42,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484805438] [2021-10-29 05:17:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:42,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:42,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:42,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484805438] [2021-10-29 05:17:42,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484805438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:42,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:42,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:17:42,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997375690] [2021-10-29 05:17:42,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:17:42,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:17:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:17:42,178 INFO L87 Difference]: Start difference. First operand 90 states and 108 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) [2021-10-29 05:17:42,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:42,275 INFO L93 Difference]: Finished difference Result 177 states and 210 transitions. [2021-10-29 05:17:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:17:42,276 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 [2021-10-29 05:17:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:42,278 INFO L225 Difference]: With dead ends: 177 [2021-10-29 05:17:42,278 INFO L226 Difference]: Without dead ends: 103 [2021-10-29 05:17:42,279 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 [2021-10-29 05:17:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-29 05:17:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-10-29 05:17:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.5921052631578947) internal successors, (121), 101 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-10-29 05:17:42,302 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 6 [2021-10-29 05:17:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:42,303 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-10-29 05:17:42,303 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) [2021-10-29 05:17:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-10-29 05:17:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:17:42,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:42,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:42,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:17:42,305 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash -34639196, now seen corresponding path program 1 times [2021-10-29 05:17:42,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:42,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849084973] [2021-10-29 05:17:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:42,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:42,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:42,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849084973] [2021-10-29 05:17:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849084973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:42,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371676394] [2021-10-29 05:17:42,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:17:42,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:17:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:42,382 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:42,508 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2021-10-29 05:17:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:17:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:42,510 INFO L225 Difference]: With dead ends: 139 [2021-10-29 05:17:42,511 INFO L226 Difference]: Without dead ends: 132 [2021-10-29 05:17:42,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:17:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-29 05:17:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2021-10-29 05:17:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.5) internal successors, (123), 102 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2021-10-29 05:17:42,523 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 8 [2021-10-29 05:17:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:42,523 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2021-10-29 05:17:42,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2021-10-29 05:17:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:17:42,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:42,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:42,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:17:42,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:42,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1073814942, now seen corresponding path program 1 times [2021-10-29 05:17:42,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:42,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162535010] [2021-10-29 05:17:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:42,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:42,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:42,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162535010] [2021-10-29 05:17:42,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162535010] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:42,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:42,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:42,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384752980] [2021-10-29 05:17:42,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:17:42,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:17:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:17:42,618 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:42,687 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2021-10-29 05:17:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:17:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:17:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:42,692 INFO L225 Difference]: With dead ends: 131 [2021-10-29 05:17:42,692 INFO L226 Difference]: Without dead ends: 126 [2021-10-29 05:17:42,693 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 [2021-10-29 05:17:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-29 05:17:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 95. [2021-10-29 05:17:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 78 states have (on average 1.4743589743589745) internal successors, (115), 94 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2021-10-29 05:17:42,715 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 9 [2021-10-29 05:17:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:42,716 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2021-10-29 05:17:42,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2021-10-29 05:17:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:17:42,717 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:42,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:42,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:17:42,718 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1368566406, now seen corresponding path program 1 times [2021-10-29 05:17:42,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:42,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873231186] [2021-10-29 05:17:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:42,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:42,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:42,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873231186] [2021-10-29 05:17:42,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873231186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:42,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:42,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:17:42,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422440811] [2021-10-29 05:17:42,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:17:42,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:17:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:17:42,953 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:43,043 INFO L93 Difference]: Finished difference Result 166 states and 192 transitions. [2021-10-29 05:17:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:17:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:17:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:43,046 INFO L225 Difference]: With dead ends: 166 [2021-10-29 05:17:43,046 INFO L226 Difference]: Without dead ends: 140 [2021-10-29 05:17:43,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:17:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-29 05:17:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 95. [2021-10-29 05:17:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 94 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-10-29 05:17:43,056 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 10 [2021-10-29 05:17:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:43,056 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-10-29 05:17:43,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-10-29 05:17:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:17:43,058 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:43,058 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:43,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:17:43,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1359355160, now seen corresponding path program 1 times [2021-10-29 05:17:43,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:43,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723628116] [2021-10-29 05:17:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:43,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:43,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723628116] [2021-10-29 05:17:43,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723628116] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:43,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:43,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:43,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017332274] [2021-10-29 05:17:43,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:17:43,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:17:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:43,097 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:43,207 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2021-10-29 05:17:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:17:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:43,214 INFO L225 Difference]: With dead ends: 129 [2021-10-29 05:17:43,214 INFO L226 Difference]: Without dead ends: 127 [2021-10-29 05:17:43,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:17:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-29 05:17:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 98. [2021-10-29 05:17:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 97 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2021-10-29 05:17:43,230 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 10 [2021-10-29 05:17:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:43,230 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2021-10-29 05:17:43,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2021-10-29 05:17:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:17:43,232 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:43,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:43,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:17:43,233 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1958923372, now seen corresponding path program 1 times [2021-10-29 05:17:43,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:43,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168286491] [2021-10-29 05:17:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:43,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:43,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168286491] [2021-10-29 05:17:43,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168286491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:43,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:43,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:43,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140389100] [2021-10-29 05:17:43,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:17:43,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:17:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:43,281 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:43,352 INFO L93 Difference]: Finished difference Result 130 states and 150 transitions. [2021-10-29 05:17:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:43,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:17:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:43,354 INFO L225 Difference]: With dead ends: 130 [2021-10-29 05:17:43,354 INFO L226 Difference]: Without dead ends: 128 [2021-10-29 05:17:43,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:17:43,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-29 05:17:43,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2021-10-29 05:17:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.4) internal successors, (119), 99 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2021-10-29 05:17:43,364 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 10 [2021-10-29 05:17:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:43,364 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2021-10-29 05:17:43,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2021-10-29 05:17:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:17:43,366 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:43,366 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:43,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:17:43,367 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:43,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1859269086, now seen corresponding path program 1 times [2021-10-29 05:17:43,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:43,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594328133] [2021-10-29 05:17:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:43,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:43,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594328133] [2021-10-29 05:17:43,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594328133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:43,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:43,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:43,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70561183] [2021-10-29 05:17:43,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:17:43,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:17:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:43,408 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:43,504 INFO L93 Difference]: Finished difference Result 213 states and 246 transitions. [2021-10-29 05:17:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:43,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:17:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:43,506 INFO L225 Difference]: With dead ends: 213 [2021-10-29 05:17:43,506 INFO L226 Difference]: Without dead ends: 140 [2021-10-29 05:17:43,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-29 05:17:43,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 105. [2021-10-29 05:17:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2021-10-29 05:17:43,516 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 11 [2021-10-29 05:17:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:43,516 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2021-10-29 05:17:43,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2021-10-29 05:17:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:17:43,518 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:43,518 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:43,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:17:43,518 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1557705536, now seen corresponding path program 1 times [2021-10-29 05:17:43,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:43,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389918876] [2021-10-29 05:17:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:43,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:43,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389918876] [2021-10-29 05:17:43,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389918876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:43,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:43,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:17:43,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780282262] [2021-10-29 05:17:43,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:17:43,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:43,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:17:43,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:43,558 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:43,625 INFO L93 Difference]: Finished difference Result 140 states and 160 transitions. [2021-10-29 05:17:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:43,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:17:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:43,627 INFO L225 Difference]: With dead ends: 140 [2021-10-29 05:17:43,627 INFO L226 Difference]: Without dead ends: 138 [2021-10-29 05:17:43,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:17:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-29 05:17:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 107. [2021-10-29 05:17:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 93 states have (on average 1.3655913978494623) internal successors, (127), 106 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2021-10-29 05:17:43,635 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 12 [2021-10-29 05:17:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:43,636 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2021-10-29 05:17:43,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2021-10-29 05:17:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:17:43,637 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:43,637 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:43,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:17:43,638 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:43,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:43,638 INFO L85 PathProgramCache]: Analyzing trace with hash 184114898, now seen corresponding path program 1 times [2021-10-29 05:17:43,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:43,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377381293] [2021-10-29 05:17:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:43,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:43,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377381293] [2021-10-29 05:17:43,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377381293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:17:43,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401622736] [2021-10-29 05:17:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:43,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:17:43,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:17:43,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:17:43,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:17:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:43,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:17:43,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:17:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:17:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:43,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401622736] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:43,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:17:43,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [2] total 7 [2021-10-29 05:17:43,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971627003] [2021-10-29 05:17:43,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:17:43,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:43,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:17:43,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:17:43,902 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:43,981 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2021-10-29 05:17:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:17:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:17:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:43,983 INFO L225 Difference]: With dead ends: 164 [2021-10-29 05:17:43,983 INFO L226 Difference]: Without dead ends: 161 [2021-10-29 05:17:43,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:17:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-29 05:17:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 94. [2021-10-29 05:17:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 93 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-10-29 05:17:43,992 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 12 [2021-10-29 05:17:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:43,992 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-10-29 05:17:43,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-10-29 05:17:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:17:44,000 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:44,000 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:44,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 05:17:44,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-29 05:17:44,225 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 124040231, now seen corresponding path program 1 times [2021-10-29 05:17:44,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:44,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30897225] [2021-10-29 05:17:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:44,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:44,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:44,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30897225] [2021-10-29 05:17:44,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30897225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:44,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:44,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:17:44,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156640774] [2021-10-29 05:17:44,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:17:44,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:44,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:17:44,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:44,260 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:44,332 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2021-10-29 05:17:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:17:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:44,334 INFO L225 Difference]: With dead ends: 152 [2021-10-29 05:17:44,334 INFO L226 Difference]: Without dead ends: 149 [2021-10-29 05:17:44,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:17:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-29 05:17:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 82. [2021-10-29 05:17:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-10-29 05:17:44,342 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 13 [2021-10-29 05:17:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:44,342 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-10-29 05:17:44,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-10-29 05:17:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:17:44,343 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:44,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:44,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 05:17:44,346 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1980971529, now seen corresponding path program 1 times [2021-10-29 05:17:44,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:44,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913771927] [2021-10-29 05:17:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:44,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:44,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:44,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913771927] [2021-10-29 05:17:44,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913771927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:44,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:44,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:17:44,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285617512] [2021-10-29 05:17:44,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:17:44,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:17:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:17:44,564 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:44,685 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2021-10-29 05:17:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:17:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:17:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:44,687 INFO L225 Difference]: With dead ends: 123 [2021-10-29 05:17:44,687 INFO L226 Difference]: Without dead ends: 122 [2021-10-29 05:17:44,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:17:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-29 05:17:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2021-10-29 05:17:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 101 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-29 05:17:44,695 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 14 [2021-10-29 05:17:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:44,696 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-29 05:17:44,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2021-10-29 05:17:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:17:44,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:44,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:44,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 05:17:44,697 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1043117607, now seen corresponding path program 1 times [2021-10-29 05:17:44,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:44,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115564246] [2021-10-29 05:17:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:44,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:44,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:44,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115564246] [2021-10-29 05:17:44,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115564246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:44,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:44,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:17:44,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316421278] [2021-10-29 05:17:44,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:17:44,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:17:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:17:44,848 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:44,899 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2021-10-29 05:17:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:17:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:17:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:44,901 INFO L225 Difference]: With dead ends: 145 [2021-10-29 05:17:44,901 INFO L226 Difference]: Without dead ends: 122 [2021-10-29 05:17:44,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:17:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-29 05:17:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2021-10-29 05:17:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 101 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2021-10-29 05:17:44,909 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 16 [2021-10-29 05:17:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:44,911 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2021-10-29 05:17:44,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2021-10-29 05:17:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:17:44,912 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:44,912 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:44,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 05:17:44,913 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash -910186237, now seen corresponding path program 1 times [2021-10-29 05:17:44,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:44,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928912895] [2021-10-29 05:17:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:44,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:45,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:45,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928912895] [2021-10-29 05:17:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928912895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:45,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:45,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:17:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313429495] [2021-10-29 05:17:45,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:17:45,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:17:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:17:45,115 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:45,178 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2021-10-29 05:17:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:17:45,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:17:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:45,180 INFO L225 Difference]: With dead ends: 197 [2021-10-29 05:17:45,180 INFO L226 Difference]: Without dead ends: 158 [2021-10-29 05:17:45,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:17:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-29 05:17:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2021-10-29 05:17:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.303921568627451) internal successors, (133), 109 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2021-10-29 05:17:45,190 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 18 [2021-10-29 05:17:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:45,192 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2021-10-29 05:17:45,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2021-10-29 05:17:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:17:45,193 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:45,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:45,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-29 05:17:45,193 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:45,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash 151091176, now seen corresponding path program 1 times [2021-10-29 05:17:45,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:45,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683991746] [2021-10-29 05:17:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:45,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:45,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:45,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683991746] [2021-10-29 05:17:45,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683991746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:45,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:45,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:17:45,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285066970] [2021-10-29 05:17:45,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:17:45,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:17:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:17:45,352 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:45,476 INFO L93 Difference]: Finished difference Result 198 states and 226 transitions. [2021-10-29 05:17:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:17:45,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:17:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:45,478 INFO L225 Difference]: With dead ends: 198 [2021-10-29 05:17:45,478 INFO L226 Difference]: Without dead ends: 197 [2021-10-29 05:17:45,482 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:17:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-29 05:17:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 118. [2021-10-29 05:17:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.309090909090909) internal successors, (144), 117 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2021-10-29 05:17:45,494 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 18 [2021-10-29 05:17:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:45,495 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2021-10-29 05:17:45,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2021-10-29 05:17:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:17:45,495 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:45,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:45,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-29 05:17:45,496 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:45,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash -830258294, now seen corresponding path program 1 times [2021-10-29 05:17:45,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:45,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641902927] [2021-10-29 05:17:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:45,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:45,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:45,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641902927] [2021-10-29 05:17:45,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641902927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:45,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:17:45,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853466556] [2021-10-29 05:17:45,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:17:45,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:45,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:17:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:17:45,640 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2021-10-29 05:17:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:45,746 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2021-10-29 05:17:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:17:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 20 [2021-10-29 05:17:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:45,748 INFO L225 Difference]: With dead ends: 197 [2021-10-29 05:17:45,748 INFO L226 Difference]: Without dead ends: 196 [2021-10-29 05:17:45,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:17:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-29 05:17:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 124. [2021-10-29 05:17:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 116 states have (on average 1.293103448275862) internal successors, (150), 123 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-10-29 05:17:45,762 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 20 [2021-10-29 05:17:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:45,762 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-10-29 05:17:45,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2021-10-29 05:17:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-10-29 05:17:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:17:45,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:45,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:45,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-29 05:17:45,765 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1712254386, now seen corresponding path program 1 times [2021-10-29 05:17:45,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:45,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480447342] [2021-10-29 05:17:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:45,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:45,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:45,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480447342] [2021-10-29 05:17:45,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480447342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:45,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:45,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:17:45,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951412085] [2021-10-29 05:17:45,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:17:45,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:17:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:17:45,906 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 5 states, 4 states have (on average 5.0) 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) [2021-10-29 05:17:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:45,975 INFO L93 Difference]: Finished difference Result 149 states and 175 transitions. [2021-10-29 05:17:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:17:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) 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 20 [2021-10-29 05:17:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:45,977 INFO L225 Difference]: With dead ends: 149 [2021-10-29 05:17:45,977 INFO L226 Difference]: Without dead ends: 148 [2021-10-29 05:17:45,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:17:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-29 05:17:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-10-29 05:17:45,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 116 states have (on average 1.293103448275862) internal successors, (150), 123 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-10-29 05:17:45,989 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 20 [2021-10-29 05:17:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:45,991 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-10-29 05:17:45,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) 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) [2021-10-29 05:17:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-10-29 05:17:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:17:45,992 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:45,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:45,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-29 05:17:45,993 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash 31803672, now seen corresponding path program 1 times [2021-10-29 05:17:45,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:45,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103811111] [2021-10-29 05:17:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:45,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:46,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:46,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103811111] [2021-10-29 05:17:46,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103811111] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:46,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:46,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-29 05:17:46,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700407515] [2021-10-29 05:17:46,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:17:46,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:46,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:17:46,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:17:46,408 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2021-10-29 05:17:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:46,861 INFO L93 Difference]: Finished difference Result 215 states and 238 transitions. [2021-10-29 05:17:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 05:17:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 05:17:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:46,863 INFO L225 Difference]: With dead ends: 215 [2021-10-29 05:17:46,863 INFO L226 Difference]: Without dead ends: 212 [2021-10-29 05:17:46,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:17:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-29 05:17:46,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 132. [2021-10-29 05:17:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 124 states have (on average 1.2903225806451613) internal successors, (160), 131 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2021-10-29 05:17:46,877 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 21 [2021-10-29 05:17:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:46,877 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2021-10-29 05:17:46,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2021-10-29 05:17:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2021-10-29 05:17:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:17:46,878 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:46,879 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:46,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-29 05:17:46,879 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 985914148, now seen corresponding path program 1 times [2021-10-29 05:17:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:46,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786197131] [2021-10-29 05:17:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:46,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:17:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:47,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:17:47,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786197131] [2021-10-29 05:17:47,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786197131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:17:47,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:17:47,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-29 05:17:47,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424184576] [2021-10-29 05:17:47,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:17:47,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:17:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:17:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:17:47,074 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:17:47,467 INFO L93 Difference]: Finished difference Result 190 states and 222 transitions. [2021-10-29 05:17:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:17:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-29 05:17:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:17:47,469 INFO L225 Difference]: With dead ends: 190 [2021-10-29 05:17:47,469 INFO L226 Difference]: Without dead ends: 183 [2021-10-29 05:17:47,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:17:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-29 05:17:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 152. [2021-10-29 05:17:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 145 states have (on average 1.2620689655172415) internal successors, (183), 151 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2021-10-29 05:17:47,487 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 22 [2021-10-29 05:17:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:17:47,487 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2021-10-29 05:17:47,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:17:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2021-10-29 05:17:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:17:47,488 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:17:47,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:47,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-29 05:17:47,489 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-29 05:17:47,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:17:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1784150644, now seen corresponding path program 1 times [2021-10-29 05:17:47,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:17:47,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695380027] [2021-10-29 05:17:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:17:47,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:17:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:17:47,512 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:17:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:17:47,558 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:17:47,559 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:17:47,560 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:17:47,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-29 05:17:47,571 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:17:47,574 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:17:47,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:17:47 BoogieIcfgContainer [2021-10-29 05:17:47,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:17:47,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:17:47,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:17:47,620 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:17:47,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:17:41" (3/4) ... [2021-10-29 05:17:47,624 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:17:47,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:17:47,626 INFO L168 Benchmark]: Toolchain (without parser) took 7643.71 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 71.7 MB in the beginning and 49.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:17:47,627 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 79.4 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:17:47,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.66 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 79.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:17:47,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 77.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:17:47,628 INFO L168 Benchmark]: Boogie Preprocessor took 50.39 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 75.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:17:47,629 INFO L168 Benchmark]: RCFGBuilder took 1245.48 ms. Allocated memory is still 107.0 MB. Free memory was 75.4 MB in the beginning and 78.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:17:47,629 INFO L168 Benchmark]: TraceAbstraction took 5848.16 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 78.2 MB in the beginning and 49.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:17:47,630 INFO L168 Benchmark]: Witness Printer took 5.37 ms. Allocated memory is still 138.4 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:17:47,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 79.4 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.66 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 79.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 77.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.39 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 75.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1245.48 ms. Allocated memory is still 107.0 MB. Free memory was 75.4 MB in the beginning and 78.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5848.16 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 78.2 MB in the beginning and 49.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.37 ms. Allocated memory is still 138.4 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 105]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 104. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add ; [L226] unsigned int zero ; [L227] int sa ; [L228] int sb ; [L229] int tmp ; [L230] int tmp___0 ; [L231] int tmp___1 ; [L232] int tmp___2 ; [L233] int tmp___3 ; [L234] int tmp___4 ; [L235] int tmp___5 ; [L236] int tmp___6 ; [L237] int tmp___7 ; [L238] int tmp___8 ; [L239] int tmp___9 ; [L240] int __retres23 ; [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L244] zero = base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND TRUE m >= 1U << 25U [L57] COND TRUE e >= 127 [L58] __retres4 = 4294967295U [L73] return (__retres4); [L245] a = base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] EXPR e + 128 [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L246] b = base2flt(mb, eb) [L248] COND FALSE !(a < zero) [L251] COND TRUE a > zero [L252] tmp = 1 [L256] sa = tmp [L258] COND FALSE !(b < zero) [L261] COND TRUE b > zero [L262] tmp___0 = 1 [L266] sb = tmp___0 [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND FALSE !(a < b) [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] EXPR (int )(a >> 24U) - 128 [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] (int )(b >> 24U) - 128 - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 102]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 102]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 105]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 126]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 126]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 98 locations, 28 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1681 SDtfs, 2056 SDslu, 3812 SDs, 0 SdLazy, 1100 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=19, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 737 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 259 ConstructedInterpolants, 0 QuantifiedInterpolants, 1218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 21 InterpolantComputations, 20 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:17:47,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c27a74-6961-42c5-ac69-3547bf474d79/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...