./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs --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 ac64f5b077f8251002b0bb05f1aba070a52d8bbef53fa94e35704949c96b0f7c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:30:35,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:30:35,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:30:35,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:30:35,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:30:35,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:30:35,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:30:35,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:30:35,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:30:35,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:30:35,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:30:35,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:30:35,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:30:35,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:30:35,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:30:35,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:30:35,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:30:35,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:30:35,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:30:35,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:30:35,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:30:35,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:30:35,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:30:35,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:30:35,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:30:35,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:30:35,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:30:36,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:30:36,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:30:36,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:30:36,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:30:36,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:30:36,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:30:36,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:30:36,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:30:36,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:30:36,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:30:36,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:30:36,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:30:36,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:30:36,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:30:36,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-19 13:30:36,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:30:36,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:30:36,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:30:36,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:30:36,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:30:36,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:30:36,067 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:30:36,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:30:36,068 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:30:36,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:30:36,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:30:36,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:30:36,070 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:30:36,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:30:36,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:30:36,070 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:30:36,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:30:36,071 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:30:36,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:30:36,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:30:36,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:30:36,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:30:36,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:30:36,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:30:36,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:30:36,073 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 13:30:36,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:30:36,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:30:36,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:30:36,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:30:36,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:30:36,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:30:36,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:36,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:30:36,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:30:36,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:30:36,078 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:30:36,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:30:36,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:30:36,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:30:36,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:30:36,079 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_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac64f5b077f8251002b0bb05f1aba070a52d8bbef53fa94e35704949c96b0f7c [2021-11-19 13:30:36,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:30:36,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:30:36,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:30:36,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:30:36,392 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:30:36,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/bitvector/byte_add-2.i [2021-11-19 13:30:36,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/data/56f169e73/c2f37db259dc4aeaa44a8f00ee205c61/FLAG4c6120c00 [2021-11-19 13:30:36,905 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:30:36,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/sv-benchmarks/c/bitvector/byte_add-2.i [2021-11-19 13:30:36,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/data/56f169e73/c2f37db259dc4aeaa44a8f00ee205c61/FLAG4c6120c00 [2021-11-19 13:30:37,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/data/56f169e73/c2f37db259dc4aeaa44a8f00ee205c61 [2021-11-19 13:30:37,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:30:37,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:30:37,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:37,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:30:37,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:30:37,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d826ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37, skipping insertion in model container [2021-11-19 13:30:37,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:30:37,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:30:37,515 WARN L230 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_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/sv-benchmarks/c/bitvector/byte_add-2.i[1166,1179] [2021-11-19 13:30:37,549 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:37,557 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:30:37,570 WARN L230 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_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/sv-benchmarks/c/bitvector/byte_add-2.i[1166,1179] [2021-11-19 13:30:37,594 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:37,606 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:30:37,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37 WrapperNode [2021-11-19 13:30:37,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:37,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:37,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:30:37,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:30:37,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,650 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2021-11-19 13:30:37,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:37,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:30:37,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:30:37,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:30:37,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:30:37,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:30:37,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:30:37,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:30:37,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (1/1) ... [2021-11-19 13:30:37,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:37,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:37,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:30:37,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:30:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:30:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:30:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:30:37,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:30:37,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:30:37,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:30:38,107 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:30:38,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:30:38,180 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:30:38,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:30:38 BoogieIcfgContainer [2021-11-19 13:30:38,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:30:38,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:30:38,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:30:38,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:30:38,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:30:37" (1/3) ... [2021-11-19 13:30:38,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773526ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:30:38, skipping insertion in model container [2021-11-19 13:30:38,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:37" (2/3) ... [2021-11-19 13:30:38,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773526ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:30:38, skipping insertion in model container [2021-11-19 13:30:38,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:30:38" (3/3) ... [2021-11-19 13:30:38,210 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-2.i [2021-11-19 13:30:38,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:30:38,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-19 13:30:38,267 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:30:38,276 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:30:38,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-19 13:30:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:30:38,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:38,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:30:38,300 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash 290383, now seen corresponding path program 1 times [2021-11-19 13:30:38,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:38,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834268408] [2021-11-19 13:30:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:38,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:38,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:38,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834268408] [2021-11-19 13:30:38,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834268408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:38,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:38,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 13:30:38,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563583856] [2021-11-19 13:30:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:38,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:30:38,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:30:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:30:38,529 INFO L87 Difference]: Start difference. First operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 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, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:38,564 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2021-11-19 13:30:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:30:38,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 13:30:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:38,581 INFO L225 Difference]: With dead ends: 99 [2021-11-19 13:30:38,581 INFO L226 Difference]: Without dead ends: 60 [2021-11-19 13:30:38,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:30:38,592 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:38,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:30:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-19 13:30:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-19 13:30:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-19 13:30:38,656 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2021-11-19 13:30:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:38,657 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-19 13:30:38,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-19 13:30:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:30:38,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:38,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:38,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:30:38,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash 862708226, now seen corresponding path program 1 times [2021-11-19 13:30:38,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:38,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426181096] [2021-11-19 13:30:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:38,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:38,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:38,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426181096] [2021-11-19 13:30:38,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426181096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:38,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:38,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:30:38,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400342543] [2021-11-19 13:30:38,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:38,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:38,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:38,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:38,826 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 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) [2021-11-19 13:30:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:38,947 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2021-11-19 13:30:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2021-11-19 13:30:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:38,950 INFO L225 Difference]: With dead ends: 120 [2021-11-19 13:30:38,950 INFO L226 Difference]: Without dead ends: 81 [2021-11-19 13:30:38,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:38,953 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:38,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-19 13:30:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2021-11-19 13:30:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-11-19 13:30:38,962 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2021-11-19 13:30:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:38,963 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-11-19 13:30:38,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-11-19 13:30:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-11-19 13:30:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 13:30:38,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:38,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:38,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:30:38,965 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1303120393, now seen corresponding path program 1 times [2021-11-19 13:30:38,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:38,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186232260] [2021-11-19 13:30:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:38,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:39,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:39,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186232260] [2021-11-19 13:30:39,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186232260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:39,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:39,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:30:39,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146961707] [2021-11-19 13:30:39,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:39,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:39,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:30:39,098 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:39,293 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2021-11-19 13:30:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:30:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-19 13:30:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:39,296 INFO L225 Difference]: With dead ends: 111 [2021-11-19 13:30:39,296 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 13:30:39,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:30:39,298 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 86 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:39,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 226 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 13:30:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2021-11-19 13:30:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2021-11-19 13:30:39,309 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 15 [2021-11-19 13:30:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:39,309 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2021-11-19 13:30:39,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:39,310 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2021-11-19 13:30:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:30:39,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:39,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:39,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:30:39,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash 521913395, now seen corresponding path program 1 times [2021-11-19 13:30:39,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:39,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320927158] [2021-11-19 13:30:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:39,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:39,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:39,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320927158] [2021-11-19 13:30:39,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320927158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:39,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:39,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:30:39,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757698630] [2021-11-19 13:30:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:39,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:39,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:30:39,443 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-11-19 13:30:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:39,588 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2021-11-19 13:30:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:30:39,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 [2021-11-19 13:30:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:39,592 INFO L225 Difference]: With dead ends: 118 [2021-11-19 13:30:39,592 INFO L226 Difference]: Without dead ends: 81 [2021-11-19 13:30:39,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:30:39,602 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 79 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:39,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 138 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-19 13:30:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-11-19 13:30:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-19 13:30:39,609 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 18 [2021-11-19 13:30:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:39,610 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-19 13:30:39,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-11-19 13:30:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-19 13:30:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:30:39,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:39,612 INFO L514 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, 1, 1] [2021-11-19 13:30:39,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:30:39,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1891165951, now seen corresponding path program 1 times [2021-11-19 13:30:39,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:39,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932602197] [2021-11-19 13:30:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:39,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:39,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:39,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932602197] [2021-11-19 13:30:39,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932602197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:39,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:39,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:30:39,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083977262] [2021-11-19 13:30:39,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:39,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:39,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:39,738 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:39,885 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2021-11-19 13:30:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:30:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-19 13:30:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:39,888 INFO L225 Difference]: With dead ends: 156 [2021-11-19 13:30:39,888 INFO L226 Difference]: Without dead ends: 118 [2021-11-19 13:30:39,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:30:39,893 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:39,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 143 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-19 13:30:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2021-11-19 13:30:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 87 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) [2021-11-19 13:30:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2021-11-19 13:30:39,909 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 24 [2021-11-19 13:30:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:39,910 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2021-11-19 13:30:39,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2021-11-19 13:30:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 13:30:39,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:39,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:39,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:30:39,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash 747339762, now seen corresponding path program 1 times [2021-11-19 13:30:39,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:39,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534326916] [2021-11-19 13:30:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:39,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:40,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:40,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534326916] [2021-11-19 13:30:40,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534326916] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:40,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029369764] [2021-11-19 13:30:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:40,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:40,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:40,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:40,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:30:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:40,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:40,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:30:40,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:30:40,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029369764] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:40,566 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:30:40,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 10 [2021-11-19 13:30:40,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447020589] [2021-11-19 13:30:40,567 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:40,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:40,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:40,569 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:40,776 INFO L93 Difference]: Finished difference Result 327 states and 413 transitions. [2021-11-19 13:30:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:30:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 13:30:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:40,778 INFO L225 Difference]: With dead ends: 327 [2021-11-19 13:30:40,779 INFO L226 Difference]: Without dead ends: 259 [2021-11-19 13:30:40,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:30:40,780 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 223 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:40,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 220 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-19 13:30:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 216. [2021-11-19 13:30:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.2697674418604652) internal successors, (273), 215 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2021-11-19 13:30:40,816 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 30 [2021-11-19 13:30:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:40,816 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2021-11-19 13:30:40,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2021-11-19 13:30:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 13:30:40,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:40,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:40,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:41,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:41,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1296784938, now seen corresponding path program 1 times [2021-11-19 13:30:41,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:41,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197357917] [2021-11-19 13:30:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:41,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:30:41,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:41,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197357917] [2021-11-19 13:30:41,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197357917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:41,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:41,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:30:41,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989344720] [2021-11-19 13:30:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:41,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:41,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:41,197 INFO L87 Difference]: Start difference. First operand 216 states and 273 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:41,279 INFO L93 Difference]: Finished difference Result 538 states and 673 transitions. [2021-11-19 13:30:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:41,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 30 [2021-11-19 13:30:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:41,283 INFO L225 Difference]: With dead ends: 538 [2021-11-19 13:30:41,283 INFO L226 Difference]: Without dead ends: 408 [2021-11-19 13:30:41,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:41,285 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 71 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:41,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 155 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-19 13:30:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 385. [2021-11-19 13:30:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.265625) internal successors, (486), 384 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 486 transitions. [2021-11-19 13:30:41,309 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 486 transitions. Word has length 30 [2021-11-19 13:30:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:41,310 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 486 transitions. [2021-11-19 13:30:41,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 486 transitions. [2021-11-19 13:30:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 13:30:41,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:41,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:41,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:30:41,317 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:41,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:41,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1365842675, now seen corresponding path program 1 times [2021-11-19 13:30:41,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:41,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449452527] [2021-11-19 13:30:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:41,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:41,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:41,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449452527] [2021-11-19 13:30:41,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449452527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:41,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914628262] [2021-11-19 13:30:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:41,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:41,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:41,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:30:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:41,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:30:41,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:42,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:44,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914628262] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:44,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:30:44,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 10] total 21 [2021-11-19 13:30:44,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266227099] [2021-11-19 13:30:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:44,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:30:44,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:30:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:30:44,072 INFO L87 Difference]: Start difference. First operand 385 states and 486 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:44,343 INFO L93 Difference]: Finished difference Result 529 states and 661 transitions. [2021-11-19 13:30:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:30:44,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-19 13:30:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:44,346 INFO L225 Difference]: With dead ends: 529 [2021-11-19 13:30:44,346 INFO L226 Difference]: Without dead ends: 394 [2021-11-19 13:30:44,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:30:44,348 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 153 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:44,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 361 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:30:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-19 13:30:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 375. [2021-11-19 13:30:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.2459893048128343) internal successors, (466), 374 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 466 transitions. [2021-11-19 13:30:44,362 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 466 transitions. Word has length 33 [2021-11-19 13:30:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:44,363 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 466 transitions. [2021-11-19 13:30:44,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 466 transitions. [2021-11-19 13:30:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:30:44,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:44,365 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:44,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:44,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:44,591 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:44,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:44,592 INFO L85 PathProgramCache]: Analyzing trace with hash 939954949, now seen corresponding path program 1 times [2021-11-19 13:30:44,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:44,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020071358] [2021-11-19 13:30:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:44,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:44,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:44,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020071358] [2021-11-19 13:30:44,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020071358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:44,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919212197] [2021-11-19 13:30:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:44,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:44,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:44,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:30:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:44,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:30:44,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:45,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:45,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919212197] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:45,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:30:45,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 13 [2021-11-19 13:30:45,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664744231] [2021-11-19 13:30:45,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:45,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:45,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:30:45,205 INFO L87 Difference]: Start difference. First operand 375 states and 466 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:45,392 INFO L93 Difference]: Finished difference Result 575 states and 720 transitions. [2021-11-19 13:30:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:45,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-19 13:30:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:45,394 INFO L225 Difference]: With dead ends: 575 [2021-11-19 13:30:45,395 INFO L226 Difference]: Without dead ends: 417 [2021-11-19 13:30:45,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:30:45,396 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 103 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:45,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 257 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:30:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-19 13:30:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 401. [2021-11-19 13:30:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.2375) internal successors, (495), 400 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 495 transitions. [2021-11-19 13:30:45,425 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 495 transitions. Word has length 36 [2021-11-19 13:30:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:45,425 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 495 transitions. [2021-11-19 13:30:45,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 495 transitions. [2021-11-19 13:30:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:30:45,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:45,427 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:45,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:45,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:45,644 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash -557149189, now seen corresponding path program 1 times [2021-11-19 13:30:45,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:45,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186569754] [2021-11-19 13:30:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:45,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:45,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:45,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186569754] [2021-11-19 13:30:45,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186569754] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:45,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099042860] [2021-11-19 13:30:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:45,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:45,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:45,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:45,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 13:30:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:45,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:30:45,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:46,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:46,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099042860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:46,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387331337] [2021-11-19 13:30:46,503 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-19 13:30:46,503 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:30:46,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:30:46,512 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:30:46,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:30:46,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:30:46,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-19 13:30:46,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-11-19 13:30:46,666 INFO L180 QuantifierPusher]: treesize reduction 21, result has 88.1 percent of original size [2021-11-19 13:30:46,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 13:30:46,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,751 INFO L180 QuantifierPusher]: treesize reduction 37, result has 78.2 percent of original size [2021-11-19 13:30:46,760 INFO L185 QuantifierPusher]: treesize reduction 24, result has 76.9 percent of original size 80 [2021-11-19 13:30:46,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 13:30:46,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 13:30:46,826 INFO L180 QuantifierPusher]: treesize reduction 19, result has 87.0 percent of original size [2021-11-19 13:30:46,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-19 13:30:46,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,916 INFO L180 QuantifierPusher]: treesize reduction 21, result has 89.3 percent of original size [2021-11-19 13:30:46,920 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:30:46,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-19 13:30:46,930 INFO L185 QuantifierPusher]: treesize reduction 24, result has 84.5 percent of original size 131 [2021-11-19 13:30:46,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:46,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:46,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-19 13:30:47,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-19 13:30:47,018 INFO L180 QuantifierPusher]: treesize reduction 17, result has 92.9 percent of original size [2021-11-19 13:30:47,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-19 13:30:47,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,089 INFO L180 QuantifierPusher]: treesize reduction 21, result has 89.3 percent of original size [2021-11-19 13:30:47,092 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:30:47,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-19 13:30:47,105 INFO L185 QuantifierPusher]: treesize reduction 24, result has 84.5 percent of original size 131 [2021-11-19 13:30:47,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-19 13:30:47,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-19 13:30:47,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,464 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:30:47,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,475 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:30:47,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-19 13:30:47,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:30:47,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:47,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-19 13:30:47,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 464 [2021-11-19 13:30:47,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 477 [2021-11-19 13:30:47,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:30:47,545 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:30:51,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:30:51,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:30:51,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 15 [2021-11-19 13:30:51,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291990946] [2021-11-19 13:30:51,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:30:51,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:30:51,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:30:51,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:30:51,366 INFO L87 Difference]: Start difference. First operand 401 states and 495 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:52,902 INFO L93 Difference]: Finished difference Result 1637 states and 2139 transitions. [2021-11-19 13:30:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 13:30:52,903 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-19 13:30:52,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:52,911 INFO L225 Difference]: With dead ends: 1637 [2021-11-19 13:30:52,911 INFO L226 Difference]: Without dead ends: 1300 [2021-11-19 13:30:52,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 91 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=508, Invalid=2354, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 13:30:52,914 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 761 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:52,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 629 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 630 Invalid, 0 Unknown, 374 Unchecked, 0.8s Time] [2021-11-19 13:30:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-19 13:30:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 958. [2021-11-19 13:30:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.303030303030303) internal successors, (1247), 957 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1247 transitions. [2021-11-19 13:30:52,952 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1247 transitions. Word has length 36 [2021-11-19 13:30:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:52,952 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1247 transitions. [2021-11-19 13:30:52,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:30:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1247 transitions. [2021-11-19 13:30:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 13:30:52,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:52,955 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:52,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-19 13:30:53,172 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:30:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1010933351, now seen corresponding path program 1 times [2021-11-19 13:30:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:30:53,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879549225] [2021-11-19 13:30:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:53,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:30:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:53,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:30:53,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879549225] [2021-11-19 13:30:53,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879549225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:30:53,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134197029] [2021-11-19 13:30:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:53,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:30:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:53,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:30:53,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:30:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:30:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:53,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:54,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134197029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:54,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [33566645] [2021-11-19 13:30:54,469 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-19 13:30:54,470 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:30:54,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:30:54,470 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:30:54,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:30:54,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:54,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:30:54,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:54,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:30:54,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:54,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 13:30:54,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:30:54,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-19 13:30:54,580 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:30:59,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [33566645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:59,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:30:59,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 9, 11] total 34 [2021-11-19 13:30:59,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020466933] [2021-11-19 13:30:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:59,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:30:59,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:30:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:30:59,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:30:59,616 INFO L87 Difference]: Start difference. First operand 958 states and 1247 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:01,982 INFO L93 Difference]: Finished difference Result 2024 states and 2664 transitions. [2021-11-19 13:31:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:31:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-19 13:31:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:02,000 INFO L225 Difference]: With dead ends: 2024 [2021-11-19 13:31:02,000 INFO L226 Difference]: Without dead ends: 1811 [2021-11-19 13:31:02,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:31:02,002 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 403 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:02,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1113 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:31:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-11-19 13:31:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 973. [2021-11-19 13:31:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.300411522633745) internal successors, (1264), 972 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1264 transitions. [2021-11-19 13:31:02,101 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1264 transitions. Word has length 45 [2021-11-19 13:31:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:02,103 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1264 transitions. [2021-11-19 13:31:02,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1264 transitions. [2021-11-19 13:31:02,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 13:31:02,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:02,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:02,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:02,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-11-19 13:31:02,328 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash -36096821, now seen corresponding path program 1 times [2021-11-19 13:31:02,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:02,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375066184] [2021-11-19 13:31:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:02,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:02,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:02,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375066184] [2021-11-19 13:31:02,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375066184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:02,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775529216] [2021-11-19 13:31:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:02,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:02,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:02,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 13:31:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:02,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:31:02,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:02,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:03,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775529216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:03,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303447391] [2021-11-19 13:31:03,529 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-19 13:31:03,529 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:03,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:03,530 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:03,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:31:03,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:03,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:31:03,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:03,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:31:03,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:03,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-19 13:31:03,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:03,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-19 13:31:03,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:03,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-19 13:31:03,681 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:31:05,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [303447391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:05,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:05,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 9, 11] total 34 [2021-11-19 13:31:05,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353732914] [2021-11-19 13:31:05,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:05,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:31:05,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:05,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:31:05,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:31:05,808 INFO L87 Difference]: Start difference. First operand 973 states and 1264 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:07,707 INFO L93 Difference]: Finished difference Result 2034 states and 2674 transitions. [2021-11-19 13:31:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-19 13:31:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:07,716 INFO L225 Difference]: With dead ends: 2034 [2021-11-19 13:31:07,716 INFO L226 Difference]: Without dead ends: 1821 [2021-11-19 13:31:07,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:31:07,719 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 459 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:07,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1273 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 13:31:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-11-19 13:31:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 968. [2021-11-19 13:31:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.2998965873836608) internal successors, (1257), 967 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1257 transitions. [2021-11-19 13:31:07,786 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1257 transitions. Word has length 47 [2021-11-19 13:31:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:07,787 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1257 transitions. [2021-11-19 13:31:07,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:07,787 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1257 transitions. [2021-11-19 13:31:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 13:31:07,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:07,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:07,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:08,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:08,016 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1808728023, now seen corresponding path program 1 times [2021-11-19 13:31:08,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:08,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760299097] [2021-11-19 13:31:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:08,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:08,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:08,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760299097] [2021-11-19 13:31:08,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760299097] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:08,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049903715] [2021-11-19 13:31:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:08,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:08,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:08,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:31:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:08,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:31:08,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:08,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:09,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049903715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:09,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1666779277] [2021-11-19 13:31:09,134 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-19 13:31:09,134 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:09,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:09,135 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:09,135 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:31:09,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:09,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:31:09,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:09,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:31:09,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:09,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 13:31:09,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:09,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-19 13:31:09,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:09,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-19 13:31:09,264 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:31:15,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1666779277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:15,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:15,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7, 9, 11] total 35 [2021-11-19 13:31:15,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781894070] [2021-11-19 13:31:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:15,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:31:15,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:31:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 13:31:15,098 INFO L87 Difference]: Start difference. First operand 968 states and 1257 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:18,103 INFO L93 Difference]: Finished difference Result 2166 states and 2848 transitions. [2021-11-19 13:31:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:31:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-19 13:31:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:18,116 INFO L225 Difference]: With dead ends: 2166 [2021-11-19 13:31:18,116 INFO L226 Difference]: Without dead ends: 1953 [2021-11-19 13:31:18,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 13:31:18,118 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 472 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:18,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1304 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 13:31:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-11-19 13:31:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 976. [2021-11-19 13:31:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 1.3005128205128205) internal successors, (1268), 975 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1268 transitions. [2021-11-19 13:31:18,174 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1268 transitions. Word has length 48 [2021-11-19 13:31:18,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:18,174 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1268 transitions. [2021-11-19 13:31:18,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1268 transitions. [2021-11-19 13:31:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 13:31:18,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:18,177 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:18,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:18,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:18,391 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:18,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:18,392 INFO L85 PathProgramCache]: Analyzing trace with hash 462888773, now seen corresponding path program 1 times [2021-11-19 13:31:18,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:18,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191181541] [2021-11-19 13:31:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:18,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:18,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:18,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191181541] [2021-11-19 13:31:18,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191181541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:18,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325781452] [2021-11-19 13:31:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:18,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:18,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:18,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:18,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 13:31:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:18,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:31:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:18,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:19,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325781452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:19,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940813554] [2021-11-19 13:31:19,575 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2021-11-19 13:31:19,576 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:19,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:19,576 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:19,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:31:19,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:19,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:31:19,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:19,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:31:19,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:19,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-19 13:31:19,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:19,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-19 13:31:19,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:19,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-19 13:31:19,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:19,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-19 13:31:19,733 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:31:23,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1940813554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:23,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:23,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6, 9, 11] total 37 [2021-11-19 13:31:23,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193689316] [2021-11-19 13:31:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:23,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 13:31:23,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 13:31:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:31:23,492 INFO L87 Difference]: Start difference. First operand 976 states and 1268 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:26,392 INFO L93 Difference]: Finished difference Result 2166 states and 2848 transitions. [2021-11-19 13:31:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:31:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 50 [2021-11-19 13:31:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:26,402 INFO L225 Difference]: With dead ends: 2166 [2021-11-19 13:31:26,403 INFO L226 Difference]: Without dead ends: 1953 [2021-11-19 13:31:26,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:31:26,405 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 442 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:26,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1956 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 13:31:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-11-19 13:31:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 968. [2021-11-19 13:31:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.2998965873836608) internal successors, (1257), 967 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1257 transitions. [2021-11-19 13:31:26,460 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1257 transitions. Word has length 50 [2021-11-19 13:31:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:26,461 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1257 transitions. [2021-11-19 13:31:26,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1257 transitions. [2021-11-19 13:31:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 13:31:26,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:26,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:26,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:26,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:26,691 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash 564536101, now seen corresponding path program 1 times [2021-11-19 13:31:26,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:26,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455690192] [2021-11-19 13:31:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:26,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:26,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:26,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455690192] [2021-11-19 13:31:26,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455690192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:26,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655931163] [2021-11-19 13:31:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:26,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:26,776 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:26,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 13:31:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:26,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:31:26,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:27,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:27,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655931163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:27,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2038567052] [2021-11-19 13:31:27,753 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2021-11-19 13:31:27,753 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:27,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:27,759 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:27,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:31:27,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:27,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:31:27,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:27,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:31:27,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:27,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 13:31:27,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:27,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-19 13:31:27,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:27,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-19 13:31:27,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:27,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-19 13:31:27,928 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:31:34,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2038567052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:34,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:34,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6, 9, 11] total 37 [2021-11-19 13:31:34,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171397995] [2021-11-19 13:31:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:34,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 13:31:34,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 13:31:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:31:34,145 INFO L87 Difference]: Start difference. First operand 968 states and 1257 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:36,468 INFO L93 Difference]: Finished difference Result 2081 states and 2730 transitions. [2021-11-19 13:31:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:31:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 50 [2021-11-19 13:31:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:36,478 INFO L225 Difference]: With dead ends: 2081 [2021-11-19 13:31:36,478 INFO L226 Difference]: Without dead ends: 1868 [2021-11-19 13:31:36,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:31:36,480 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 526 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:36,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 1476 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 13:31:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-11-19 13:31:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 978. [2021-11-19 13:31:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.2998976458546572) internal successors, (1270), 977 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1270 transitions. [2021-11-19 13:31:36,535 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1270 transitions. Word has length 50 [2021-11-19 13:31:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:36,535 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1270 transitions. [2021-11-19 13:31:36,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1270 transitions. [2021-11-19 13:31:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 13:31:36,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:36,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:36,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:36,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-11-19 13:31:36,751 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:36,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1744890689, now seen corresponding path program 1 times [2021-11-19 13:31:36,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:36,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833613330] [2021-11-19 13:31:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:36,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:36,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:36,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833613330] [2021-11-19 13:31:36,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833613330] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:36,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375166284] [2021-11-19 13:31:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:36,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:36,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:36,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:36,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 13:31:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:36,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:31:36,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:37,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375166284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:37,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925403086] [2021-11-19 13:31:37,852 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2021-11-19 13:31:37,852 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:37,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:37,853 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:37,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:31:37,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:31:37,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-19 13:31:37,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-19 13:31:37,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-19 13:31:37,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-19 13:31:37,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-19 13:31:37,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:37,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-19 13:31:37,967 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:31:40,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [925403086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:40,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:40,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7, 9, 11] total 37 [2021-11-19 13:31:40,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699368396] [2021-11-19 13:31:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:40,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:31:40,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:31:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1141, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:31:40,409 INFO L87 Difference]: Start difference. First operand 978 states and 1270 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:42,970 INFO L93 Difference]: Finished difference Result 1986 states and 2602 transitions. [2021-11-19 13:31:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:31:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 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 52 [2021-11-19 13:31:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:42,976 INFO L225 Difference]: With dead ends: 1986 [2021-11-19 13:31:42,977 INFO L226 Difference]: Without dead ends: 1773 [2021-11-19 13:31:42,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=191, Invalid=1141, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:31:42,978 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 525 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:42,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 2641 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 13:31:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2021-11-19 13:31:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 873. [2021-11-19 13:31:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.2947247706422018) internal successors, (1129), 872 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1129 transitions. [2021-11-19 13:31:43,027 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1129 transitions. Word has length 52 [2021-11-19 13:31:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:43,027 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1129 transitions. [2021-11-19 13:31:43,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1129 transitions. [2021-11-19 13:31:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 13:31:43,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:43,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:43,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:43,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:43,251 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash 256457302, now seen corresponding path program 1 times [2021-11-19 13:31:43,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:43,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233303160] [2021-11-19 13:31:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:43,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:31:43,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:43,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233303160] [2021-11-19 13:31:43,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233303160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:43,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:43,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:31:43,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177050156] [2021-11-19 13:31:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:43,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:31:43,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:31:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:31:43,299 INFO L87 Difference]: Start difference. First operand 873 states and 1129 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:43,382 INFO L93 Difference]: Finished difference Result 1690 states and 2199 transitions. [2021-11-19 13:31:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:31:43,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 53 [2021-11-19 13:31:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:43,387 INFO L225 Difference]: With dead ends: 1690 [2021-11-19 13:31:43,387 INFO L226 Difference]: Without dead ends: 923 [2021-11-19 13:31:43,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:31:43,389 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:43,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:31:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-19 13:31:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 884. [2021-11-19 13:31:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.2763306908267271) internal successors, (1127), 883 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1127 transitions. [2021-11-19 13:31:43,431 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1127 transitions. Word has length 53 [2021-11-19 13:31:43,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:43,433 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 1127 transitions. [2021-11-19 13:31:43,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1127 transitions. [2021-11-19 13:31:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 13:31:43,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:43,435 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:43,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-19 13:31:43,435 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1998876274, now seen corresponding path program 1 times [2021-11-19 13:31:43,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:43,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012520018] [2021-11-19 13:31:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:43,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 13:31:43,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:43,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012520018] [2021-11-19 13:31:43,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012520018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:43,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:43,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:31:43,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021391314] [2021-11-19 13:31:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:43,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:31:43,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:31:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:31:43,471 INFO L87 Difference]: Start difference. First operand 884 states and 1127 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:43,564 INFO L93 Difference]: Finished difference Result 1395 states and 1786 transitions. [2021-11-19 13:31:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:31:43,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 53 [2021-11-19 13:31:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:43,569 INFO L225 Difference]: With dead ends: 1395 [2021-11-19 13:31:43,569 INFO L226 Difference]: Without dead ends: 874 [2021-11-19 13:31:43,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:31:43,571 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 26 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:43,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 91 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:31:43,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-19 13:31:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 794. [2021-11-19 13:31:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.2597730138713745) internal successors, (999), 793 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 999 transitions. [2021-11-19 13:31:43,607 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 999 transitions. Word has length 53 [2021-11-19 13:31:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:43,608 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 999 transitions. [2021-11-19 13:31:43,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 999 transitions. [2021-11-19 13:31:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 13:31:43,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:43,610 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:43,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-11-19 13:31:43,612 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash -992659305, now seen corresponding path program 1 times [2021-11-19 13:31:43,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:43,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015030880] [2021-11-19 13:31:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:43,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:31:43,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:43,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015030880] [2021-11-19 13:31:43,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015030880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:43,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870597128] [2021-11-19 13:31:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:43,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:43,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:43,798 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 13:31:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:43,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:31:43,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:31:44,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:31:44,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870597128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:44,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1497721131] [2021-11-19 13:31:44,753 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-19 13:31:44,753 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:44,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:44,754 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:44,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:31:44,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:44,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 13:31:44,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:44,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-19 13:31:44,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:44,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-19 13:31:44,893 INFO L180 QuantifierPusher]: treesize reduction 15, result has 91.2 percent of original size [2021-11-19 13:31:44,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 13:31:44,912 INFO L180 QuantifierPusher]: treesize reduction 162, result has 0.6 percent of original size [2021-11-19 13:31:44,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 13:31:44,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:44,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,026 INFO L180 QuantifierPusher]: treesize reduction 18, result has 96.2 percent of original size [2021-11-19 13:31:45,028 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:31:45,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-11-19 13:31:45,058 INFO L185 QuantifierPusher]: treesize reduction 24, result has 94.3 percent of original size 396 [2021-11-19 13:31:45,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 13:31:45,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 13:31:45,103 INFO L180 QuantifierPusher]: treesize reduction 19, result has 87.0 percent of original size [2021-11-19 13:31:45,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-19 13:31:45,121 INFO L180 QuantifierPusher]: treesize reduction 25, result has 83.6 percent of original size [2021-11-19 13:31:45,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-19 13:31:45,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,197 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-11-19 13:31:45,204 INFO L185 QuantifierPusher]: treesize reduction 24, result has 79.3 percent of original size 92 [2021-11-19 13:31:45,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-19 13:31:45,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 13:31:45,247 INFO L180 QuantifierPusher]: treesize reduction 21, result has 82.8 percent of original size [2021-11-19 13:31:45,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-19 13:31:45,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,289 INFO L180 QuantifierPusher]: treesize reduction 6, result has 89.7 percent of original size [2021-11-19 13:31:45,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:31:45,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,341 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-11-19 13:31:45,347 INFO L185 QuantifierPusher]: treesize reduction 24, result has 79.3 percent of original size 92 [2021-11-19 13:31:45,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-19 13:31:45,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 13:31:45,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,612 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:31:45,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,628 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:31:45,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-19 13:31:45,640 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 13:31:45,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:31:45,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-19 13:31:45,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 464 [2021-11-19 13:31:45,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 477 [2021-11-19 13:31:45,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,774 INFO L180 QuantifierPusher]: treesize reduction 6, result has 89.7 percent of original size [2021-11-19 13:31:45,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-19 13:31:45,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:31:45,821 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:31:48,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:31:48,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:31:48,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 21 [2021-11-19 13:31:48,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136642233] [2021-11-19 13:31:48,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:31:48,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 13:31:48,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 13:31:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1499, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 13:31:48,643 INFO L87 Difference]: Start difference. First operand 794 states and 999 transitions. Second operand has 21 states, 21 states have (on average 4.0) internal successors, (84), 21 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:49,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:49,550 INFO L93 Difference]: Finished difference Result 2041 states and 2580 transitions. [2021-11-19 13:31:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:31:49,550 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0) internal successors, (84), 21 states have internal predecessors, (84), 0 states have call successors, (0), 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 54 [2021-11-19 13:31:49,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:49,556 INFO L225 Difference]: With dead ends: 2041 [2021-11-19 13:31:49,556 INFO L226 Difference]: Without dead ends: 1527 [2021-11-19 13:31:49,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=481, Invalid=2275, Unknown=0, NotChecked=0, Total=2756 [2021-11-19 13:31:49,558 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 323 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:49,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 370 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:31:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2021-11-19 13:31:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 901. [2021-11-19 13:31:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.27) internal successors, (1143), 900 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1143 transitions. [2021-11-19 13:31:49,621 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1143 transitions. Word has length 54 [2021-11-19 13:31:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:49,622 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1143 transitions. [2021-11-19 13:31:49,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0) internal successors, (84), 21 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1143 transitions. [2021-11-19 13:31:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:31:49,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:49,624 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:49,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:49,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:49,851 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-19 13:31:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash 220278331, now seen corresponding path program 1 times [2021-11-19 13:31:49,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:49,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682898819] [2021-11-19 13:31:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:49,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:50,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:50,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682898819] [2021-11-19 13:31:50,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682898819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:31:50,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479817555] [2021-11-19 13:31:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:50,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:50,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:50,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3c8dee-b05f-4fb6-9389-ddd7a61766af/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 13:31:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:50,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 13:31:50,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 23 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:31:50,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:31:54,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479817555] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:54,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1741470666] [2021-11-19 13:31:54,506 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-19 13:31:54,506 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:31:54,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:31:54,507 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:31:54,507 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs