./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:09:51,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:09:51,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:09:51,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:09:51,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:09:51,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:09:51,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:09:51,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:09:51,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:09:51,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:09:51,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:09:51,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:09:51,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:09:51,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:09:51,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:09:51,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:09:51,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:09:51,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:09:51,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:09:51,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:09:51,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:09:51,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:09:51,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:09:51,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:09:51,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:09:51,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:09:51,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:09:51,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:09:51,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:09:51,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:09:51,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:09:51,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:09:51,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:09:51,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:09:51,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:09:51,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:09:51,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:09:51,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:09:51,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:09:51,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:09:51,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:09:51,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 16:09:51,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:09:51,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:09:51,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:09:51,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:09:51,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:09:51,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:09:51,347 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:09:51,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:09:51,347 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:09:51,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:09:51,348 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:09:51,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:09:51,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:09:51,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:09:51,349 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:09:51,349 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:09:51,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:09:51,350 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:09:51,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:09:51,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:09:51,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:09:51,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:09:51,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:09:51,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:09:51,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:09:51,352 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 16:09:51,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:09:51,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:09:51,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:09:51,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:09:51,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:09:51,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:09:51,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:09:51,355 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:09:51,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:09:51,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:09:51,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:09:51,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:09:51,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:09:51,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:09:51,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f [2022-11-23 16:09:51,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:09:51,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:09:51,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:09:51,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:09:51,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:09:51,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-11-23 16:09:54,714 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:09:54,885 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:09:54,885 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-11-23 16:09:54,892 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/data/93a733b03/68eba39ce4e14e01afcbd8199517ee80/FLAGf952b14aa [2022-11-23 16:09:54,907 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/data/93a733b03/68eba39ce4e14e01afcbd8199517ee80 [2022-11-23 16:09:54,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:09:54,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:09:54,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:09:54,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:09:54,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:09:54,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:09:54" (1/1) ... [2022-11-23 16:09:54,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628f52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:54, skipping insertion in model container [2022-11-23 16:09:54,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:09:54" (1/1) ... [2022-11-23 16:09:54,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:09:54,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:09:55,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:09:55,123 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:09:55,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:09:55,153 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:09:55,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55 WrapperNode [2022-11-23 16:09:55,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:09:55,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:09:55,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:09:55,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:09:55,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,185 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-23 16:09:55,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:09:55,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:09:55,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:09:55,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:09:55,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:09:55,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:09:55,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:09:55,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:09:55,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (1/1) ... [2022-11-23 16:09:55,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:09:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:55,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:09:55,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:09:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:09:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:09:55,389 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:09:55,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:09:55,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:09:55,568 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:09:55,569 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:09:55,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:55 BoogieIcfgContainer [2022-11-23 16:09:55,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:09:55,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:09:55,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:09:55,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:09:55,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:09:54" (1/3) ... [2022-11-23 16:09:55,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef64dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:09:55, skipping insertion in model container [2022-11-23 16:09:55,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:55" (2/3) ... [2022-11-23 16:09:55,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef64dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:09:55, skipping insertion in model container [2022-11-23 16:09:55,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:55" (3/3) ... [2022-11-23 16:09:55,581 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-11-23 16:09:55,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:09:55,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 16:09:55,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:09:55,658 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4357f42c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:09:55,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 16:09:55,662 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) [2022-11-23 16:09:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:09:55,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:55,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:09:55,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2022-11-23 16:09:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:55,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766058662] [2022-11-23 16:09:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:55,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:55,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766058662] [2022-11-23 16:09:55,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766058662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:55,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:55,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:55,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494298735] [2022-11-23 16:09:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:55,892 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:55,950 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-23 16:09:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 16:09:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:55,960 INFO L225 Difference]: With dead ends: 32 [2022-11-23 16:09:55,960 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 16:09:55,963 INFO L412 NwaCegarLoop]: 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 [2022-11-23 16:09:55,966 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:55,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:09:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 16:09:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-23 16:09:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-23 16:09:56,020 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2022-11-23 16:09:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:56,020 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-23 16:09:56,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-23 16:09:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:09:56,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:56,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:09:56,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:09:56,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2022-11-23 16:09:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:56,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662304678] [2022-11-23 16:09:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:56,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:56,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:56,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662304678] [2022-11-23 16:09:56,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662304678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:56,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:56,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569671336] [2022-11-23 16:09:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:56,117 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 16:09:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:56,156 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-23 16:09:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-23 16:09:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:56,158 INFO L225 Difference]: With dead ends: 40 [2022-11-23 16:09:56,158 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 16:09:56,159 INFO L412 NwaCegarLoop]: 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 [2022-11-23 16:09:56,160 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:56,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:09:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 16:09:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-23 16:09:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-11-23 16:09:56,169 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2022-11-23 16:09:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:56,169 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-11-23 16:09:56,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-23 16:09:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-11-23 16:09:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:09:56,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:56,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:56,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:09:56,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2022-11-23 16:09:56,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:56,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142518274] [2022-11-23 16:09:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:56,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:56,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142518274] [2022-11-23 16:09:56,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142518274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:56,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:56,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:56,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396823708] [2022-11-23 16:09:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:56,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:56,242 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:56,263 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-11-23 16:09:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 16:09:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:56,265 INFO L225 Difference]: With dead ends: 36 [2022-11-23 16:09:56,265 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 16:09:56,265 INFO L412 NwaCegarLoop]: 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 [2022-11-23 16:09:56,267 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:56,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:09:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 16:09:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 16:09:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-23 16:09:56,292 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 7 [2022-11-23 16:09:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:56,293 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-23 16:09:56,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-23 16:09:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:09:56,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:56,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:56,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:09:56,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2022-11-23 16:09:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:56,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934795781] [2022-11-23 16:09:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:56,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:56,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934795781] [2022-11-23 16:09:56,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934795781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:56,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:56,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:09:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466949195] [2022-11-23 16:09:56,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:56,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:56,351 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) 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) [2022-11-23 16:09:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:56,370 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-11-23 16:09:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) 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 [2022-11-23 16:09:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:56,371 INFO L225 Difference]: With dead ends: 41 [2022-11-23 16:09:56,372 INFO L226 Difference]: Without dead ends: 40 [2022-11-23 16:09:56,372 INFO L412 NwaCegarLoop]: 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 [2022-11-23 16:09:56,373 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:56,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:09:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-23 16:09:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-23 16:09:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-11-23 16:09:56,381 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2022-11-23 16:09:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:56,381 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-11-23 16:09:56,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) 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) [2022-11-23 16:09:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-11-23 16:09:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 16:09:56,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:56,383 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:56,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:09:56,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash 799855624, now seen corresponding path program 1 times [2022-11-23 16:09:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:56,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213092256] [2022-11-23 16:09:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:56,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:56,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213092256] [2022-11-23 16:09:56,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213092256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:56,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188471935] [2022-11-23 16:09:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:56,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:56,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:56,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:09:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:56,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:09:56,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:56,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:56,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188471935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:56,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769385464] [2022-11-23 16:09:56,676 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:09:56,677 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:09:56,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:09:56,686 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:09:56,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:09:57,037 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:09:57,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [769385464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:57,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:09:57,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2022-11-23 16:09:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930436324] [2022-11-23 16:09:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:57,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 16:09:57,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:57,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 16:09:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:57,356 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2022-11-23 16:09:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:57,952 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-11-23 16:09:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 16:09:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 11 [2022-11-23 16:09:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:57,963 INFO L225 Difference]: With dead ends: 66 [2022-11-23 16:09:57,964 INFO L226 Difference]: Without dead ends: 62 [2022-11-23 16:09:57,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:09:57,967 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:57,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 18 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:09:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-23 16:09:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2022-11-23 16:09:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 46 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-11-23 16:09:57,986 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 11 [2022-11-23 16:09:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:57,986 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-11-23 16:09:57,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2022-11-23 16:09:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-11-23 16:09:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 16:09:57,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:57,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:58,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:58,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:58,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 799855816, now seen corresponding path program 1 times [2022-11-23 16:09:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:58,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495874690] [2022-11-23 16:09:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:58,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:58,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495874690] [2022-11-23 16:09:58,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495874690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:58,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26207921] [2022-11-23 16:09:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:58,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:58,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:58,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:58,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:09:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:58,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:09:58,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:58,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:58,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26207921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [216411116] [2022-11-23 16:09:58,382 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:09:58,382 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:09:58,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:09:58,383 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:09:58,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:09:58,466 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:09:58,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '621#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:09:58,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:09:58,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:09:58,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 16:09:58,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236139796] [2022-11-23 16:09:58,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:09:58,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:09:58,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:58,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:09:58,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:58,682 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:58,744 INFO L93 Difference]: Finished difference Result 122 states and 162 transitions. [2022-11-23 16:09:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:09:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 16:09:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:58,747 INFO L225 Difference]: With dead ends: 122 [2022-11-23 16:09:58,747 INFO L226 Difference]: Without dead ends: 120 [2022-11-23 16:09:58,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:58,749 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:58,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 33 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:09:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-23 16:09:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2022-11-23 16:09:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 100 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2022-11-23 16:09:58,762 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 11 [2022-11-23 16:09:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:58,762 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2022-11-23 16:09:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2022-11-23 16:09:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 16:09:58,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:58,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:58,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:58,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:58,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:58,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1616469403, now seen corresponding path program 1 times [2022-11-23 16:09:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:58,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024252649] [2022-11-23 16:09:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:59,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024252649] [2022-11-23 16:09:59,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024252649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931921420] [2022-11-23 16:09:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:59,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:59,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:59,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:59,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:09:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:59,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:09:59,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:59,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:59,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931921420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [188898695] [2022-11-23 16:09:59,111 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:09:59,112 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:09:59,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:09:59,113 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:09:59,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:09:59,296 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:09:59,603 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '950#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:09:59,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:09:59,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:09:59,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 16:09:59,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49215284] [2022-11-23 16:09:59,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:09:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:09:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:09:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:59,605 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:59,677 INFO L93 Difference]: Finished difference Result 223 states and 310 transitions. [2022-11-23 16:09:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:09:59,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 16:09:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:59,679 INFO L225 Difference]: With dead ends: 223 [2022-11-23 16:09:59,679 INFO L226 Difference]: Without dead ends: 221 [2022-11-23 16:09:59,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:09:59,680 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:59,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 36 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:09:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-23 16:09:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 198. [2022-11-23 16:09:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 197 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2022-11-23 16:09:59,700 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 12 [2022-11-23 16:09:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:59,700 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2022-11-23 16:09:59,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:09:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2022-11-23 16:09:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:09:59,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:59,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-23 16:09:59,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:09:59,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 16:09:59,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:09:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1351066791, now seen corresponding path program 1 times [2022-11-23 16:09:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:59,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057009240] [2022-11-23 16:09:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:59,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:59,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057009240] [2022-11-23 16:09:59,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057009240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:59,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851999965] [2022-11-23 16:09:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:59,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:59,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:59,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:00,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:10:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:00,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:10:00,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:00,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:00,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851999965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:00,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [273591467] [2022-11-23 16:10:00,087 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:00,087 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:00,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:00,088 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:00,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:00,198 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:00,507 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1518#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:00,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:00,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:00,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 16:10:00,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387566124] [2022-11-23 16:10:00,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:00,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:10:00,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:10:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:10:00,509 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:00,549 INFO L93 Difference]: Finished difference Result 329 states and 433 transitions. [2022-11-23 16:10:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:10:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 16:10:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:00,551 INFO L225 Difference]: With dead ends: 329 [2022-11-23 16:10:00,551 INFO L226 Difference]: Without dead ends: 328 [2022-11-23 16:10:00,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:10:00,552 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:00,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 48 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:10:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-23 16:10:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-11-23 16:10:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 1.263157894736842) internal successors, (408), 327 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 408 transitions. [2022-11-23 16:10:00,572 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 408 transitions. Word has length 14 [2022-11-23 16:10:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:00,572 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 408 transitions. [2022-11-23 16:10:00,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 408 transitions. [2022-11-23 16:10:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 16:10:00,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:00,575 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2022-11-23 16:10:00,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:00,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 16:10:00,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 681215329, now seen corresponding path program 2 times [2022-11-23 16:10:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:00,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918439091] [2022-11-23 16:10:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:00,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:00,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918439091] [2022-11-23 16:10:00,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918439091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:00,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883589154] [2022-11-23 16:10:00,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:10:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:00,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:00,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:10:00,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:10:00,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:00,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:10:00,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:00,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883589154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007651291] [2022-11-23 16:10:01,069 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:01,069 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:01,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:01,070 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:01,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:01,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:01,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2446#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:01,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:01,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:01,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 16:10:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477635066] [2022-11-23 16:10:01,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:01,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 16:10:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 16:10:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:10:01,353 INFO L87 Difference]: Start difference. First operand 328 states and 408 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:01,504 INFO L93 Difference]: Finished difference Result 828 states and 1130 transitions. [2022-11-23 16:10:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 16:10:01,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 29 [2022-11-23 16:10:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:01,508 INFO L225 Difference]: With dead ends: 828 [2022-11-23 16:10:01,508 INFO L226 Difference]: Without dead ends: 826 [2022-11-23 16:10:01,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:10:01,510 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 102 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:01,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 69 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:01,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-23 16:10:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 602. [2022-11-23 16:10:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 597 states have (on average 1.3031825795644891) internal successors, (778), 601 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 778 transitions. [2022-11-23 16:10:01,540 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 778 transitions. Word has length 29 [2022-11-23 16:10:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:01,540 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 778 transitions. [2022-11-23 16:10:01,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 778 transitions. [2022-11-23 16:10:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 16:10:01,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:01,542 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 16:10:01,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:01,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:01,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1081708646, now seen corresponding path program 2 times [2022-11-23 16:10:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683209336] [2022-11-23 16:10:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:01,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:01,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683209336] [2022-11-23 16:10:01,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683209336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:01,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734162958] [2022-11-23 16:10:01,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:10:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:01,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:01,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:01,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 16:10:01,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:10:01,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:01,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:10:01,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:01,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:02,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734162958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:02,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2081366498] [2022-11-23 16:10:02,044 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:02,044 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:02,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:02,045 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:02,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:02,169 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:02,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4262#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:02,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:02,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:02,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 16:10:02,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893963781] [2022-11-23 16:10:02,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:02,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 16:10:02,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 16:10:02,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:10:02,525 INFO L87 Difference]: Start difference. First operand 602 states and 778 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:02,692 INFO L93 Difference]: Finished difference Result 1328 states and 1818 transitions. [2022-11-23 16:10:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 16:10:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-23 16:10:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:02,697 INFO L225 Difference]: With dead ends: 1328 [2022-11-23 16:10:02,698 INFO L226 Difference]: Without dead ends: 1326 [2022-11-23 16:10:02,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:10:02,699 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:02,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 75 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:02,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-11-23 16:10:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 828. [2022-11-23 16:10:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 823 states have (on average 1.307411907654921) internal successors, (1076), 827 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1076 transitions. [2022-11-23 16:10:02,738 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1076 transitions. Word has length 30 [2022-11-23 16:10:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:02,739 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1076 transitions. [2022-11-23 16:10:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1076 transitions. [2022-11-23 16:10:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 16:10:02,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:02,741 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2022-11-23 16:10:02,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-23 16:10:02,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 16:10:02,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash -139921252, now seen corresponding path program 2 times [2022-11-23 16:10:02,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:02,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544976870] [2022-11-23 16:10:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:02,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:03,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:03,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544976870] [2022-11-23 16:10:03,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544976870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:03,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319660506] [2022-11-23 16:10:03,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:10:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:03,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:03,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:03,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:10:03,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:10:03,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:10:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:03,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:03,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319660506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:03,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072037194] [2022-11-23 16:10:03,220 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:03,221 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:03,221 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:03,221 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:03,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:03,308 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:03,656 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6911#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:03,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:03,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:03,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 16:10:03,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583131950] [2022-11-23 16:10:03,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:03,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 16:10:03,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 16:10:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:10:03,658 INFO L87 Difference]: Start difference. First operand 828 states and 1076 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:03,787 INFO L93 Difference]: Finished difference Result 2079 states and 2701 transitions. [2022-11-23 16:10:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 16:10:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 32 [2022-11-23 16:10:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:03,794 INFO L225 Difference]: With dead ends: 2079 [2022-11-23 16:10:03,794 INFO L226 Difference]: Without dead ends: 2078 [2022-11-23 16:10:03,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:10:03,796 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:03,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:10:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2022-11-23 16:10:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2078. [2022-11-23 16:10:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2073 states have (on average 1.2021225277375784) internal successors, (2492), 2077 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:03,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2492 transitions. [2022-11-23 16:10:03,882 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2492 transitions. Word has length 32 [2022-11-23 16:10:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:03,883 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2492 transitions. [2022-11-23 16:10:03,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2492 transitions. [2022-11-23 16:10:03,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 16:10:03,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:03,889 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2022-11-23 16:10:03,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 16:10:04,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:04,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1787577901, now seen corresponding path program 3 times [2022-11-23 16:10:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:04,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826723933] [2022-11-23 16:10:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:04,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:04,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826723933] [2022-11-23 16:10:04,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826723933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:04,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644550151] [2022-11-23 16:10:04,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:10:04,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:04,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:04,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:04,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 16:10:04,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:10:04,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:04,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:10:04,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:04,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:04,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644550151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:04,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [779852372] [2022-11-23 16:10:04,771 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:04,771 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:04,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:04,772 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:04,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:04,821 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:05,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12043#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:05,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:05,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:05,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 16:10:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335255884] [2022-11-23 16:10:05,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 16:10:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 16:10:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:10:05,052 INFO L87 Difference]: Start difference. First operand 2078 states and 2492 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:05,472 INFO L93 Difference]: Finished difference Result 4909 states and 6446 transitions. [2022-11-23 16:10:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:10:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 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 65 [2022-11-23 16:10:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:05,486 INFO L225 Difference]: With dead ends: 4909 [2022-11-23 16:10:05,487 INFO L226 Difference]: Without dead ends: 4907 [2022-11-23 16:10:05,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:10:05,490 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 248 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:05,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 141 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:10:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2022-11-23 16:10:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3234. [2022-11-23 16:10:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3229 states have (on average 1.2335088262620006) internal successors, (3983), 3233 states have internal predecessors, (3983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3983 transitions. [2022-11-23 16:10:05,641 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3983 transitions. Word has length 65 [2022-11-23 16:10:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:05,641 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 3983 transitions. [2022-11-23 16:10:05,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3983 transitions. [2022-11-23 16:10:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 16:10:05,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:05,645 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2022-11-23 16:10:05,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:05,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:05,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1666232252, now seen corresponding path program 3 times [2022-11-23 16:10:05,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296614258] [2022-11-23 16:10:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:05,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:06,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296614258] [2022-11-23 16:10:06,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296614258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:06,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618652206] [2022-11-23 16:10:06,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:10:06,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:06,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:06,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:06,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 16:10:06,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:10:06,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:06,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:10:06,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:06,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:06,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618652206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:06,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1955014033] [2022-11-23 16:10:06,558 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:06,558 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:06,558 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:06,559 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:06,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:06,639 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:07,169 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21688#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:07,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:07,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:07,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 16:10:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906536281] [2022-11-23 16:10:07,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:07,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 16:10:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 16:10:07,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:10:07,172 INFO L87 Difference]: Start difference. First operand 3234 states and 3983 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:07,677 INFO L93 Difference]: Finished difference Result 7696 states and 10116 transitions. [2022-11-23 16:10:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:10:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 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 66 [2022-11-23 16:10:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:07,698 INFO L225 Difference]: With dead ends: 7696 [2022-11-23 16:10:07,698 INFO L226 Difference]: Without dead ends: 7694 [2022-11-23 16:10:07,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 168 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:10:07,702 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 215 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:07,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 155 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:10:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7694 states. [2022-11-23 16:10:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7694 to 3958. [2022-11-23 16:10:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3953 states have (on average 1.245130280799393) internal successors, (4922), 3957 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 4922 transitions. [2022-11-23 16:10:07,989 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 4922 transitions. Word has length 66 [2022-11-23 16:10:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:07,991 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 4922 transitions. [2022-11-23 16:10:07,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 4922 transitions. [2022-11-23 16:10:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 16:10:07,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:07,997 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1] [2022-11-23 16:10:08,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:08,202 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash 773609158, now seen corresponding path program 3 times [2022-11-23 16:10:08,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:08,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550398116] [2022-11-23 16:10:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:08,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:08,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550398116] [2022-11-23 16:10:08,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550398116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:08,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017644699] [2022-11-23 16:10:08,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:10:08,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:08,409 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:08,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 16:10:08,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:10:08,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:08,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:10:08,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:08,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:08,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017644699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:08,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [333505607] [2022-11-23 16:10:08,869 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:08,869 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:08,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:08,870 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:08,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:08,943 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:09,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35298#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:09,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:09,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:09,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 16:10:09,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680141271] [2022-11-23 16:10:09,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:09,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 16:10:09,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 16:10:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:10:09,479 INFO L87 Difference]: Start difference. First operand 3958 states and 4922 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:10,184 INFO L93 Difference]: Finished difference Result 13997 states and 17830 transitions. [2022-11-23 16:10:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:10:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 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 68 [2022-11-23 16:10:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:10,224 INFO L225 Difference]: With dead ends: 13997 [2022-11-23 16:10:10,224 INFO L226 Difference]: Without dead ends: 13996 [2022-11-23 16:10:10,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:10:10,232 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:10,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 172 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13996 states. [2022-11-23 16:10:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13996 to 13996. [2022-11-23 16:10:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13996 states, 13991 states have (on average 1.166464155528554) internal successors, (16320), 13995 states have internal predecessors, (16320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13996 states to 13996 states and 16320 transitions. [2022-11-23 16:10:11,225 INFO L78 Accepts]: Start accepts. Automaton has 13996 states and 16320 transitions. Word has length 68 [2022-11-23 16:10:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:11,225 INFO L495 AbstractCegarLoop]: Abstraction has 13996 states and 16320 transitions. [2022-11-23 16:10:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13996 states and 16320 transitions. [2022-11-23 16:10:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-23 16:10:11,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:11,255 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2022-11-23 16:10:11,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-23 16:10:11,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 16:10:11,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1804677047, now seen corresponding path program 4 times [2022-11-23 16:10:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:11,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845217356] [2022-11-23 16:10:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:11,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:12,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845217356] [2022-11-23 16:10:12,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845217356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398245306] [2022-11-23 16:10:12,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:10:12,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:12,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:12,252 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:12,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 16:10:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:12,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:10:12,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:12,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:13,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398245306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:13,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934082630] [2022-11-23 16:10:13,525 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:13,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:13,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:13,526 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:13,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:13,569 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:13,928 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67942#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:13,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:13,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:13,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 16:10:13,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104865983] [2022-11-23 16:10:13,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:13,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 16:10:13,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 16:10:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:10:13,933 INFO L87 Difference]: Start difference. First operand 13996 states and 16320 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:15,789 INFO L93 Difference]: Finished difference Result 33407 states and 42048 transitions. [2022-11-23 16:10:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 16:10:15,790 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-11-23 16:10:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:15,848 INFO L225 Difference]: With dead ends: 33407 [2022-11-23 16:10:15,849 INFO L226 Difference]: Without dead ends: 33405 [2022-11-23 16:10:15,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:10:15,865 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 770 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:15,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 285 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:10:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33405 states. [2022-11-23 16:10:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33405 to 18996. [2022-11-23 16:10:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18996 states, 18991 states have (on average 1.1898794165657416) internal successors, (22597), 18995 states have internal predecessors, (22597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18996 states to 18996 states and 22597 transitions. [2022-11-23 16:10:17,330 INFO L78 Accepts]: Start accepts. Automaton has 18996 states and 22597 transitions. Word has length 137 [2022-11-23 16:10:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:17,330 INFO L495 AbstractCegarLoop]: Abstraction has 18996 states and 22597 transitions. [2022-11-23 16:10:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 18996 states and 22597 transitions. [2022-11-23 16:10:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 16:10:17,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:17,362 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2022-11-23 16:10:17,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 16:10:17,568 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2039147160, now seen corresponding path program 4 times [2022-11-23 16:10:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732431631] [2022-11-23 16:10:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:18,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732431631] [2022-11-23 16:10:18,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732431631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436069107] [2022-11-23 16:10:18,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:10:18,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:18,527 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:18,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 16:10:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:18,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:10:18,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:18,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:19,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436069107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1641999389] [2022-11-23 16:10:19,757 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:19,757 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:19,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:19,757 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:19,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:19,844 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:20,973 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '128097#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:20,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:20,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:20,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 16:10:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247012006] [2022-11-23 16:10:20,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 16:10:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 16:10:20,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:10:20,977 INFO L87 Difference]: Start difference. First operand 18996 states and 22597 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:23,398 INFO L93 Difference]: Finished difference Result 50744 states and 64284 transitions. [2022-11-23 16:10:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 16:10:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 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 138 [2022-11-23 16:10:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:23,493 INFO L225 Difference]: With dead ends: 50744 [2022-11-23 16:10:23,493 INFO L226 Difference]: Without dead ends: 50742 [2022-11-23 16:10:23,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 360 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:10:23,506 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 514 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:23,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 316 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:10:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50742 states. [2022-11-23 16:10:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50742 to 21810. [2022-11-23 16:10:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21810 states, 21805 states have (on average 1.1992662233432698) internal successors, (26150), 21809 states have internal predecessors, (26150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21810 states to 21810 states and 26150 transitions. [2022-11-23 16:10:25,054 INFO L78 Accepts]: Start accepts. Automaton has 21810 states and 26150 transitions. Word has length 138 [2022-11-23 16:10:25,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:25,054 INFO L495 AbstractCegarLoop]: Abstraction has 21810 states and 26150 transitions. [2022-11-23 16:10:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:25,055 INFO L276 IsEmpty]: Start isEmpty. Operand 21810 states and 26150 transitions. [2022-11-23 16:10:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 16:10:25,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:25,082 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1] [2022-11-23 16:10:25,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:25,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 16:10:25,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1115335706, now seen corresponding path program 4 times [2022-11-23 16:10:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:25,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856370883] [2022-11-23 16:10:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:25,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:25,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856370883] [2022-11-23 16:10:25,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856370883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:25,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727146235] [2022-11-23 16:10:25,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:10:25,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:25,878 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:25,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 16:10:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:25,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:10:25,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:26,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:27,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727146235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:27,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1814979361] [2022-11-23 16:10:27,145 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:27,145 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:27,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:27,146 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:27,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:27,219 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:28,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '210903#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:28,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:28,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:28,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 16:10:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914912821] [2022-11-23 16:10:28,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 16:10:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 16:10:28,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:10:28,330 INFO L87 Difference]: Start difference. First operand 21810 states and 26150 transitions. Second operand has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:34,999 INFO L93 Difference]: Finished difference Result 100833 states and 126622 transitions. [2022-11-23 16:10:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 16:10:34,999 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 0 states have call successors, (0), 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 140 [2022-11-23 16:10:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:35,101 INFO L225 Difference]: With dead ends: 100833 [2022-11-23 16:10:35,101 INFO L226 Difference]: Without dead ends: 100832 [2022-11-23 16:10:35,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 366 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:10:35,125 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 399 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:35,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 304 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:10:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100832 states. [2022-11-23 16:10:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100832 to 100832. [2022-11-23 16:10:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100832 states, 100827 states have (on average 1.1467662431689924) internal successors, (115625), 100831 states have internal predecessors, (115625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100832 states to 100832 states and 115625 transitions. [2022-11-23 16:10:42,866 INFO L78 Accepts]: Start accepts. Automaton has 100832 states and 115625 transitions. Word has length 140 [2022-11-23 16:10:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:42,866 INFO L495 AbstractCegarLoop]: Abstraction has 100832 states and 115625 transitions. [2022-11-23 16:10:42,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 100832 states and 115625 transitions. [2022-11-23 16:10:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-23 16:10:42,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:42,995 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1] [2022-11-23 16:10:43,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-23 16:10:43,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 16:10:43,200 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 16:10:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash 804671359, now seen corresponding path program 5 times [2022-11-23 16:10:43,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:43,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455041484] [2022-11-23 16:10:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:45,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455041484] [2022-11-23 16:10:45,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455041484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833347439] [2022-11-23 16:10:45,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:10:45,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:45,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:45,945 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:45,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e3e10b-bb92-4339-a2f6-f114c26d1b4c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 16:10:46,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 16:10:46,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:46,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 16:10:46,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:46,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:49,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833347439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:49,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112179118] [2022-11-23 16:10:49,859 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 16:10:49,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:49,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:49,860 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:49,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:49,909 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:50,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '441005#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-23 16:10:50,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:50,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:50,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-23 16:10:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033378629] [2022-11-23 16:10:50,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 16:10:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 16:10:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4587, Invalid=5919, Unknown=0, NotChecked=0, Total=10506 [2022-11-23 16:10:50,308 INFO L87 Difference]: Start difference. First operand 100832 states and 115625 transitions. Second operand has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:11:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:04,972 INFO L93 Difference]: Finished difference Result 263617 states and 320378 transitions. [2022-11-23 16:11:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-23 16:11:04,973 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 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 281 [2022-11-23 16:11:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:05,264 INFO L225 Difference]: With dead ends: 263617 [2022-11-23 16:11:05,265 INFO L226 Difference]: Without dead ends: 263615 [2022-11-23 16:11:05,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4587, Invalid=5919, Unknown=0, NotChecked=0, Total=10506 [2022-11-23 16:11:05,312 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1441 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:05,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 573 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [969 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 16:11:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263615 states.