./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.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_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/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_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/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_284cc551-42cd-470c-9d6f-ada61a17d5f6/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 6b9a965f73c3cec90a7bf30e1abcce707e2acf95b41bbd45e0beb5b55c7fe39d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:35:09,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:35:09,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:35:09,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:35:09,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:35:09,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:35:09,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:35:09,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:35:09,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:35:09,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:35:09,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:35:09,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:35:09,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:35:09,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:35:09,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:35:09,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:35:09,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:35:09,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:35:09,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:35:09,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:35:09,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:35:09,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:35:09,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:35:09,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:35:09,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:35:09,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:35:09,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:35:09,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:35:09,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:35:09,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:35:09,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:35:09,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:35:09,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:35:09,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:35:09,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:35:09,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:35:09,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:35:09,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:35:09,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:35:09,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:35:09,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:35:09,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-19 13:35:09,320 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:35:09,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:35:09,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:35:09,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:35:09,325 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:35:09,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:35:09,326 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:35:09,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:35:09,330 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:35:09,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:35:09,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:35:09,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:35:09,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:35:09,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:35:09,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:35:09,332 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:35:09,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:35:09,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:35:09,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:35:09,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:35:09,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:35:09,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:35:09,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:35:09,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:35:09,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:35:09,337 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 13:35:09,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:35:09,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:35:09,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:35:09,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:35:09,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:35:09,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:35:09,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:35:09,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:35:09,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:35:09,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:35:09,343 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:35:09,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:35:09,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:35:09,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:35:09,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:35:09,344 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_284cc551-42cd-470c-9d6f-ada61a17d5f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b9a965f73c3cec90a7bf30e1abcce707e2acf95b41bbd45e0beb5b55c7fe39d [2021-11-19 13:35:09,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:35:09,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:35:09,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:35:09,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:35:09,757 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:35:09,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-11-19 13:35:09,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/data/6c06aa9e6/a53c7474a0f14690b72e72ed53f82086/FLAGa9d8e942c [2021-11-19 13:35:10,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:35:10,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-11-19 13:35:10,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/data/6c06aa9e6/a53c7474a0f14690b72e72ed53f82086/FLAGa9d8e942c [2021-11-19 13:35:10,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/data/6c06aa9e6/a53c7474a0f14690b72e72ed53f82086 [2021-11-19 13:35:10,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:35:10,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:35:10,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:35:10,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:35:10,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:35:10,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:35:10" (1/1) ... [2021-11-19 13:35:10,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f66bc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:10, skipping insertion in model container [2021-11-19 13:35:10,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:35:10" (1/1) ... [2021-11-19 13:35:10,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:35:10,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:35:11,023 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_284cc551-42cd-470c-9d6f-ada61a17d5f6/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-11-19 13:35:11,047 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:35:11,059 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:35:11,072 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_284cc551-42cd-470c-9d6f-ada61a17d5f6/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-11-19 13:35:11,076 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:35:11,090 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:35:11,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11 WrapperNode [2021-11-19 13:35:11,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:35:11,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:35:11,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:35:11,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:35:11,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,128 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-11-19 13:35:11,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:35:11,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:35:11,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:35:11,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:35:11,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:35:11,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:35:11,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:35:11,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:35:11,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (1/1) ... [2021-11-19 13:35:11,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:35:11,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:11,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:35:11,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:35:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:35:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:35:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:35:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:35:11,310 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:35:11,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:35:11,453 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:35:11,478 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:35:11,478 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:35:11,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:11 BoogieIcfgContainer [2021-11-19 13:35:11,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:35:11,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:35:11,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:35:11,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:35:11,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:35:10" (1/3) ... [2021-11-19 13:35:11,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1a30ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:11, skipping insertion in model container [2021-11-19 13:35:11,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:35:11" (2/3) ... [2021-11-19 13:35:11,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1a30ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:35:11, skipping insertion in model container [2021-11-19 13:35:11,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:35:11" (3/3) ... [2021-11-19 13:35:11,500 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2021-11-19 13:35:11,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:35:11,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-19 13:35:11,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:35:11,624 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 13:35:11,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:35:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:35:11,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:11,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:35:11,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash 71343, now seen corresponding path program 1 times [2021-11-19 13:35:11,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:11,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654108138] [2021-11-19 13:35:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:11,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:11,839 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 13:35:11,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:11,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654108138] [2021-11-19 13:35:11,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654108138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:11,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:11,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 13:35:11,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533641794] [2021-11-19 13:35:11,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:11,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:11,941 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,016 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-19 13:35:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:12,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 13:35:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:12,030 INFO L225 Difference]: With dead ends: 21 [2021-11-19 13:35:12,030 INFO L226 Difference]: Without dead ends: 14 [2021-11-19 13:35:12,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:12,039 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:12,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-19 13:35:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-19 13:35:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-19 13:35:12,077 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2021-11-19 13:35:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,078 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-19 13:35:12,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-19 13:35:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 13:35:12,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 13:35:12,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:35:12,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2211678, now seen corresponding path program 1 times [2021-11-19 13:35:12,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47233164] [2021-11-19 13:35:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,118 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 13:35:12,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47233164] [2021-11-19 13:35:12,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47233164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:35:12,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875185179] [2021-11-19 13:35:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:12,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:12,123 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,136 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-19 13:35:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-19 13:35:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:12,138 INFO L225 Difference]: With dead ends: 14 [2021-11-19 13:35:12,138 INFO L226 Difference]: Without dead ends: 13 [2021-11-19 13:35:12,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:12,141 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:12,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-19 13:35:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-19 13:35:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-19 13:35:12,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-19 13:35:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,148 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-19 13:35:12,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-19 13:35:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:35:12,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 13:35:12,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:35:12,150 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2125424160, now seen corresponding path program 1 times [2021-11-19 13:35:12,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878667652] [2021-11-19 13:35:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,224 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 13:35:12,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878667652] [2021-11-19 13:35:12,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878667652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:12,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716445562] [2021-11-19 13:35:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:35:12,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:35:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:35:12,229 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,265 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-19 13:35:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:35:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 13:35:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:12,267 INFO L225 Difference]: With dead ends: 20 [2021-11-19 13:35:12,268 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 13:35:12,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:12,270 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:12,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 13:35:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-19 13:35:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 13:35:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-19 13:35:12,279 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-19 13:35:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,279 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-19 13:35:12,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-19 13:35:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:35:12,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:12,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:35:12,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1463639574, now seen corresponding path program 1 times [2021-11-19 13:35:12,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11801881] [2021-11-19 13:35:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,329 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 13:35:12,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11801881] [2021-11-19 13:35:12,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11801881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:12,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960479296] [2021-11-19 13:35:12,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:35:12,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:35:12,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:35:12,334 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,359 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-19 13:35:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:35:12,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 13:35:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:12,361 INFO L225 Difference]: With dead ends: 17 [2021-11-19 13:35:12,361 INFO L226 Difference]: Without dead ends: 16 [2021-11-19 13:35:12,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:12,363 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:12,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-19 13:35:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-19 13:35:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-19 13:35:12,370 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-19 13:35:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,371 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-19 13:35:12,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-19 13:35:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:35:12,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:12,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:35:12,374 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1871813406, now seen corresponding path program 1 times [2021-11-19 13:35:12,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21209588] [2021-11-19 13:35:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,430 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 13:35:12,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21209588] [2021-11-19 13:35:12,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21209588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:35:12,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922457959] [2021-11-19 13:35:12,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:35:12,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:35:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:35:12,434 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,461 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-19 13:35:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:35:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 13:35:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:12,462 INFO L225 Difference]: With dead ends: 16 [2021-11-19 13:35:12,463 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 13:35:12,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:12,465 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:12,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 13:35:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 13:35:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 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 13:35:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-19 13:35:12,471 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-19 13:35:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,475 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-19 13:35:12,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-19 13:35:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:35:12,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:12,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:35:12,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2103326616, now seen corresponding path program 1 times [2021-11-19 13:35:12,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229411956] [2021-11-19 13:35:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,564 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 13:35:12,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229411956] [2021-11-19 13:35:12,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229411956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:12,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749519205] [2021-11-19 13:35:12,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:35:12,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:35:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:35:12,571 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:12,628 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-19 13:35:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:35:12,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 13:35:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:12,630 INFO L225 Difference]: With dead ends: 19 [2021-11-19 13:35:12,631 INFO L226 Difference]: Without dead ends: 18 [2021-11-19 13:35:12,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:35:12,640 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:12,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-19 13:35:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-19 13:35:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 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 13:35:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-19 13:35:12,655 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-11-19 13:35:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,656 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-19 13:35:12,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-19 13:35:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:35:12,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:12,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:35:12,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1378031940, now seen corresponding path program 1 times [2021-11-19 13:35:12,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35649391] [2021-11-19 13:35:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:12,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35649391] [2021-11-19 13:35:12,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35649391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:12,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734943678] [2021-11-19 13:35:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:12,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:12,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:35:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:35:12,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:12,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:13,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734943678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:13,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [391945151] [2021-11-19 13:35:13,042 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:35:13,042 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:35:13,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:35:13,055 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:35:13,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:35:13,111 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-11-19 13:35:13,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-19 13:35:13,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:13,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 13:35:13,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,301 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.6 percent of original size [2021-11-19 13:35:13,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-19 13:35:13,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:13,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-19 13:35:13,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,470 INFO L180 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-11-19 13:35:13,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:35:13,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:13,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:13,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:13,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:35:13,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:13,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:35:13,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:13,618 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:13,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:13,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:13,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:13,652 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:13,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:13,663 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:35:13,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [391945151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:13,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:35:13,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 13 [2021-11-19 13:35:13,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980384608] [2021-11-19 13:35:13,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:13,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:35:13,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:13,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:35:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:35:13,983 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:14,325 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-19 13:35:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:35:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 13:35:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:14,326 INFO L225 Difference]: With dead ends: 18 [2021-11-19 13:35:14,327 INFO L226 Difference]: Without dead ends: 17 [2021-11-19 13:35:14,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:35:14,328 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:14,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-19 13:35:14,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-19 13:35:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 13:35:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-19 13:35:14,333 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2021-11-19 13:35:14,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:14,334 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-19 13:35:14,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-19 13:35:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 13:35:14,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:14,335 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-19 13:35:14,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:14,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 13:35:14,536 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1652055684, now seen corresponding path program 1 times [2021-11-19 13:35:14,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:14,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537994562] [2021-11-19 13:35:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:14,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:14,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:14,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537994562] [2021-11-19 13:35:14,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537994562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:14,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648589062] [2021-11-19 13:35:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:14,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:14,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:14,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:14,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:35:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:14,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:35:14,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:14,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:15,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648589062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:15,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1219288282] [2021-11-19 13:35:15,126 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:35:15,127 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:35:15,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:35:15,127 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:35:15,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:35:15,149 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-11-19 13:35:15,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-19 13:35:15,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:15,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 13:35:15,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,207 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.6 percent of original size [2021-11-19 13:35:15,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-19 13:35:15,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:15,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-19 13:35:15,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,295 INFO L180 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-11-19 13:35:15,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:35:15,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:15,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:15,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:15,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:35:15,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:15,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:35:15,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:15,380 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:15,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:15,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:15,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:15,418 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:15,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:15,425 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:35:15,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:35:15,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:35:15,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-11-19 13:35:15,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86643432] [2021-11-19 13:35:15,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:15,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:35:15,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:35:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:35:15,932 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 13:35:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:16,251 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-11-19 13:35:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:35:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 13:35:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:16,253 INFO L225 Difference]: With dead ends: 46 [2021-11-19 13:35:16,253 INFO L226 Difference]: Without dead ends: 45 [2021-11-19 13:35:16,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-11-19 13:35:16,255 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:16,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 21 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-19 13:35:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-19 13:35:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 13:35:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-11-19 13:35:16,264 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 16 [2021-11-19 13:35:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:16,265 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-11-19 13:35:16,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 13:35:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-11-19 13:35:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 13:35:16,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:16,267 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1] [2021-11-19 13:35:16,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:16,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-19 13:35:16,495 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1816146556, now seen corresponding path program 2 times [2021-11-19 13:35:16,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:16,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066981512] [2021-11-19 13:35:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:16,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:16,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:16,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066981512] [2021-11-19 13:35:16,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066981512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:16,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828588535] [2021-11-19 13:35:16,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:35:16,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:16,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:16,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:16,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:35:16,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-19 13:35:16,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:35:16,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:35:16,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:16,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:17,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828588535] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:17,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80584443] [2021-11-19 13:35:17,305 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:35:17,305 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:35:17,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:35:17,306 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:35:17,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:35:17,326 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-11-19 13:35:17,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-19 13:35:17,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:17,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-19 13:35:17,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,374 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.7 percent of original size [2021-11-19 13:35:17,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-19 13:35:17,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:17,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-19 13:35:17,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,431 INFO L180 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-11-19 13:35:17,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:35:17,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:17,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:17,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:17,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:35:17,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:17,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:35:17,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:17,496 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:17,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:17,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:17,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:17,522 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:17,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:17,527 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:35:18,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:35:18,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:35:18,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-19 13:35:18,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527662711] [2021-11-19 13:35:18,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:18,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 13:35:18,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 13:35:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2021-11-19 13:35:18,285 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 13:35:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:18,575 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2021-11-19 13:35:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 13:35:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 13:35:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:18,577 INFO L225 Difference]: With dead ends: 95 [2021-11-19 13:35:18,578 INFO L226 Difference]: Without dead ends: 94 [2021-11-19 13:35:18,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 90 SyntacticMatches, 24 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=441, Invalid=1365, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 13:35:18,580 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 64 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:18,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 66 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-19 13:35:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-19 13:35:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 13:35:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-11-19 13:35:18,593 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 44 [2021-11-19 13:35:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:18,593 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-11-19 13:35:18,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 13:35:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-11-19 13:35:18,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 13:35:18,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:18,597 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 1, 1, 1] [2021-11-19 13:35:18,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:18,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:18,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1712481432, now seen corresponding path program 3 times [2021-11-19 13:35:18,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:18,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795057003] [2021-11-19 13:35:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:18,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:19,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:19,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795057003] [2021-11-19 13:35:19,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795057003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:19,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329149274] [2021-11-19 13:35:19,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:35:19,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:19,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:19,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:19,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 13:35:19,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:35:19,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:35:19,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-19 13:35:19,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:21,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:25,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329149274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:25,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [676527110] [2021-11-19 13:35:25,492 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:35:25,492 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:35:25,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:35:25,493 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:35:25,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:35:25,506 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-11-19 13:35:25,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-19 13:35:25,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:25,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 13:35:25,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,545 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.6 percent of original size [2021-11-19 13:35:25,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-19 13:35:25,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:25,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-19 13:35:25,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,594 INFO L180 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-11-19 13:35:25,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:35:25,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:25,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:25,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:25,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:35:25,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:25,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:35:25,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:35:25,656 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:25,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:25,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:35:25,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:35:25,670 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:35:25,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:35:25,678 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:35:30,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:35:30,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:35:30,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 40, 40] total 103 [2021-11-19 13:35:30,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089492569] [2021-11-19 13:35:30,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:30,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-19 13:35:30,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-19 13:35:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1340, Invalid=10432, Unknown=0, NotChecked=0, Total=11772 [2021-11-19 13:35:31,006 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 104 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 104 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 13:35:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:40,392 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2021-11-19 13:35:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-19 13:35:40,407 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 104 states have internal predecessors, (274), 0 states have call successors, (0), 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 93 [2021-11-19 13:35:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:40,410 INFO L225 Difference]: With dead ends: 277 [2021-11-19 13:35:40,410 INFO L226 Difference]: Without dead ends: 276 [2021-11-19 13:35:40,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 145 SyntacticMatches, 52 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10822 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=7076, Invalid=31144, Unknown=0, NotChecked=0, Total=38220 [2021-11-19 13:35:40,424 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1870 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:40,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 104 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 13:35:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-19 13:35:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-19 13:35:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.0036363636363637) internal successors, (276), 275 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 13:35:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2021-11-19 13:35:40,484 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 93 [2021-11-19 13:35:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:40,485 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2021-11-19 13:35:40,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 104 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 13:35:40,486 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2021-11-19 13:35:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-19 13:35:40,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:40,491 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 38, 1, 1, 1] [2021-11-19 13:35:40,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-19 13:35:40,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-19 13:35:40,713 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:35:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1930111464, now seen corresponding path program 4 times [2021-11-19 13:35:40,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:40,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334334866] [2021-11-19 13:35:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:40,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:42,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:42,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334334866] [2021-11-19 13:35:42,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334334866] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:35:42,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046085861] [2021-11-19 13:35:42,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:35:42,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:35:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:35:42,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:35:42,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:35:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:42,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 157 conjunts are in the unsatisfiable core [2021-11-19 13:35:43,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:54,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5187 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:18,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046085861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:18,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263374331] [2021-11-19 13:36:18,961 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:36:18,961 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:36:18,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:36:18,961 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:36:18,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:36:18,977 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-11-19 13:36:18,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-19 13:36:18,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:18,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 13:36:18,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,041 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.6 percent of original size [2021-11-19 13:36:19,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-19 13:36:19,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-19 13:36:19,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,089 INFO L180 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-11-19 13:36:19,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:36:19,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:36:19,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:36:19,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:36:19,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:36:19,149 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:36:19,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:36:19,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:36:19,160 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:36:19,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:36:19,164 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:37:04,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:37:04,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:37:04,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 118, 118] total 311 [2021-11-19 13:37:04,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201702356] [2021-11-19 13:37:04,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:37:04,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 312 states [2021-11-19 13:37:04,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:37:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 312 interpolants. [2021-11-19 13:37:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11090, Invalid=89082, Unknown=0, NotChecked=0, Total=100172 [2021-11-19 13:37:04,737 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand has 312 states, 311 states have (on average 2.6366559485530545) internal successors, (820), 312 states have internal predecessors, (820), 0 states have call successors, (0), 0 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 13:39:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:23,457 INFO L93 Difference]: Finished difference Result 823 states and 900 transitions. [2021-11-19 13:39:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2021-11-19 13:39:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 312 states, 311 states have (on average 2.6366559485530545) internal successors, (820), 312 states have internal predecessors, (820), 0 states have call successors, (0), 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 275 [2021-11-19 13:39:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:23,464 INFO L225 Difference]: With dead ends: 823 [2021-11-19 13:39:23,464 INFO L226 Difference]: Without dead ends: 822 [2021-11-19 13:39:23,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 431 SyntacticMatches, 156 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99885 ImplicationChecksByTransitivity, 200.1s TimeCoverageRelationStatistics Valid=63301, Invalid=279509, Unknown=0, NotChecked=0, Total=342810 [2021-11-19 13:39:23,497 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14501 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 32452 mSolverCounterSat, 4288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14501 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 36740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4288 IncrementalHoareTripleChecker+Valid, 32452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:23,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14501 Valid, 319 Invalid, 36740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4288 Valid, 32452 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2021-11-19 13:39:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-19 13:39:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2021-11-19 13:39:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.0012180267965896) internal successors, (822), 821 states have internal predecessors, (822), 0 states have call successors, (0), 0 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 13:39:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 822 transitions. [2021-11-19 13:39:23,567 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 822 transitions. Word has length 275 [2021-11-19 13:39:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:23,568 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 822 transitions. [2021-11-19 13:39:23,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 312 states, 311 states have (on average 2.6366559485530545) internal successors, (820), 312 states have internal predecessors, (820), 0 states have call successors, (0), 0 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 13:39:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 822 transitions. [2021-11-19 13:39:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-11-19 13:39:23,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:23,599 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 117, 117, 116, 1, 1, 1] [2021-11-19 13:39:23,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-19 13:39:23,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:39:23,827 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:39:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1328769688, now seen corresponding path program 5 times [2021-11-19 13:39:23,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:23,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393405] [2021-11-19 13:39:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:23,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 47502 backedges. 0 proven. 47502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:41,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:41,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393405] [2021-11-19 13:39:41,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:39:41,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051510848] [2021-11-19 13:39:41,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:39:41,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:39:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:41,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:39:41,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 13:39:42,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2021-11-19 13:39:42,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:39:42,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 269 conjunts are in the unsatisfiable core [2021-11-19 13:39:42,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 47502 backedges. 0 proven. 47502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:50,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 47502 backedges. 0 proven. 47502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:40:47,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051510848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:47,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1890336194] [2021-11-19 13:40:47,018 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 13:40:47,019 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:40:47,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:40:47,019 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:40:47,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:40:47,030 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-11-19 13:40:47,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-19 13:40:47,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-19 13:40:47,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,074 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.7 percent of original size [2021-11-19 13:40:47,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-19 13:40:47,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-19 13:40:47,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,126 INFO L180 QuantifierPusher]: treesize reduction 20, result has 71.4 percent of original size [2021-11-19 13:40:47,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 13:40:47,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:40:47,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 13:40:47,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-19 13:40:47,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:40:47,184 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:40:47,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:40:47,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:40:47,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 13:40:47,197 INFO L180 QuantifierPusher]: treesize reduction 20, result has 70.1 percent of original size [2021-11-19 13:40:47,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 13:40:47,202 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:42:37,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:42:37,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:42:37,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 252, 252] total 535 [2021-11-19 13:42:37,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281253223] [2021-11-19 13:42:37,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:42:37,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 536 states [2021-11-19 13:42:37,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 536 interpolants. [2021-11-19 13:42:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54924, Invalid=237216, Unknown=0, NotChecked=0, Total=292140 [2021-11-19 13:42:37,284 INFO L87 Difference]: Start difference. First operand 822 states and 822 transitions. Second operand has 536 states, 535 states have (on average 3.285981308411215) internal successors, (1758), 536 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 13:44:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:11,731 INFO L93 Difference]: Finished difference Result 1761 states and 1894 transitions. [2021-11-19 13:44:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2021-11-19 13:44:11,732 INFO L78 Accepts]: Start accepts. Automaton has has 536 states, 535 states have (on average 3.285981308411215) internal successors, (1758), 536 states have internal predecessors, (1758), 0 states have call successors, (0), 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 821 [2021-11-19 13:44:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:11,742 INFO L225 Difference]: With dead ends: 1761 [2021-11-19 13:44:11,742 INFO L226 Difference]: Without dead ends: 1760 [2021-11-19 13:44:11,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3012 GetRequests, 1689 SyntacticMatches, 468 SemanticMatches, 855 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485887 ImplicationChecksByTransitivity, 248.0s TimeCoverageRelationStatistics Valid=173255, Invalid=560337, Unknown=0, NotChecked=0, Total=733592 [2021-11-19 13:44:11,781 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 11584 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 7978 mSolverCounterSat, 2836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11584 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 10814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2836 IncrementalHoareTripleChecker+Valid, 7978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:11,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11584 Valid, 963 Invalid, 10814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2836 Valid, 7978 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-19 13:44:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2021-11-19 13:44:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2021-11-19 13:44:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.000568504832291) internal successors, (1760), 1759 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 13:44:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 1760 transitions. [2021-11-19 13:44:11,865 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 1760 transitions. Word has length 821 [2021-11-19 13:44:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:11,866 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 1760 transitions. [2021-11-19 13:44:11,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 536 states, 535 states have (on average 3.285981308411215) internal successors, (1758), 536 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 13:44:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 1760 transitions. [2021-11-19 13:44:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2021-11-19 13:44:11,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:11,937 INFO L514 BasicCegarLoop]: trace histogram [251, 251, 251, 251, 251, 251, 250, 1, 1, 1] [2021-11-19 13:44:11,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-19 13:44:12,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-11-19 13:44:12,151 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 13:44:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1799638760, now seen corresponding path program 6 times [2021-11-19 13:44:12,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:12,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555151760] [2021-11-19 13:44:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:12,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:45:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 219625 backedges. 0 proven. 219625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:28,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:45:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555151760] [2021-11-19 13:45:28,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555151760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:45:28,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461214370] [2021-11-19 13:45:28,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:45:28,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:45:28,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:45:28,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:45:28,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284cc551-42cd-470c-9d6f-ada61a17d5f6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:45:29,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:45:29,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:45:29,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 3794 conjuncts, 1005 conjunts are in the unsatisfiable core [2021-11-19 13:45:29,728 INFO L286 TraceCheckSpWp]: Computing forward predicates...