./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 06:02:34,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:02:34,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:02:34,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:02:34,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:02:34,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:02:34,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:02:34,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:02:34,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:02:34,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:02:34,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:02:34,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:02:34,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:02:34,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:02:34,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:02:34,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:02:34,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:02:34,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:02:34,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:02:34,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:02:34,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:02:34,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:02:34,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:02:34,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:02:34,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:02:34,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:02:34,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:02:34,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:02:34,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:02:34,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:02:34,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:02:34,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:02:34,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:02:34,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:02:34,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:02:34,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:02:34,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:02:34,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:02:34,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:02:34,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:02:34,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:02:34,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 06:02:34,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:02:34,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:02:34,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:02:34,282 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:02:34,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:02:34,282 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:02:34,282 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 06:02:34,283 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:02:34,283 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:02:34,283 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 06:02:34,283 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 06:02:34,283 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:02:34,284 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 06:02:34,284 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 06:02:34,284 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 06:02:34,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:02:34,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 06:02:34,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 06:02:34,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:02:34,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 06:02:34,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:02:34,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 06:02:34,287 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 06:02:34,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 06:02:34,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:02:34,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 06:02:34,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:02:34,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:02:34,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:02:34,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:02:34,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:02:34,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 06:02:34,289 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 06:02:34,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 06:02:34,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 06:02:34,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:02:34,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:02:34,290 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2021-10-29 06:02:34,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:02:34,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:02:34,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:02:34,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:02:34,567 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:02:34,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-29 06:02:34,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/data/4283be008/394e1fdc0bbc435aa90b9b5a22e1d74e/FLAGa2df92faf [2021-10-29 06:02:35,150 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:02:35,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-29 06:02:35,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/data/4283be008/394e1fdc0bbc435aa90b9b5a22e1d74e/FLAGa2df92faf [2021-10-29 06:02:35,501 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/data/4283be008/394e1fdc0bbc435aa90b9b5a22e1d74e [2021-10-29 06:02:35,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:02:35,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:02:35,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:02:35,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:02:35,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:02:35,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a35e016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35, skipping insertion in model container [2021-10-29 06:02:35,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:02:35,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:02:35,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:02:35,683 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:02:35,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:02:35,709 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:02:35,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35 WrapperNode [2021-10-29 06:02:35,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:02:35,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:02:35,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:02:35,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:02:35,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:02:35,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:02:35,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:02:35,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:02:35,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:02:35,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:02:35,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:02:35,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:02:35,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (1/1) ... [2021-10-29 06:02:35,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:02:35,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:35,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:02:35,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:02:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:02:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:02:36,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:02:36,102 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 06:02:36,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:02:36 BoogieIcfgContainer [2021-10-29 06:02:36,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:02:36,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:02:36,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:02:36,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:02:36,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:02:35" (1/3) ... [2021-10-29 06:02:36,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721d04a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:02:36, skipping insertion in model container [2021-10-29 06:02:36,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:02:35" (2/3) ... [2021-10-29 06:02:36,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721d04a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:02:36, skipping insertion in model container [2021-10-29 06:02:36,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:02:36" (3/3) ... [2021-10-29 06:02:36,124 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-10-29 06:02:36,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:02:36,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 06:02:36,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:02:36,202 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 06:02:36,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 06:02:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 06:02:36,237 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:36,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 06:02:36,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-29 06:02:36,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:36,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630562260] [2021-10-29 06:02:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:36,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:36,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630562260] [2021-10-29 06:02:36,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630562260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:02:36,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:02:36,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 06:02:36,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912553301] [2021-10-29 06:02:36,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:02:36,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:02:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,423 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:36,468 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-10-29 06:02:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:02:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 06:02:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:36,478 INFO L225 Difference]: With dead ends: 40 [2021-10-29 06:02:36,479 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 06:02:36,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 06:02:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-29 06:02:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 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) [2021-10-29 06:02:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-29 06:02:36,515 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-10-29 06:02:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:36,515 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-29 06:02:36,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-29 06:02:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 06:02:36,516 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:36,517 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 06:02:36,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 06:02:36,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-29 06:02:36,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:36,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21562378] [2021-10-29 06:02:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:36,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:36,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21562378] [2021-10-29 06:02:36,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21562378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:02:36,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:02:36,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 06:02:36,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794698816] [2021-10-29 06:02:36,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:02:36,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:02:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,543 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:36,565 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-29 06:02:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:02:36,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 06:02:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:36,566 INFO L225 Difference]: With dead ends: 21 [2021-10-29 06:02:36,567 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 06:02:36,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 06:02:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 06:02:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-29 06:02:36,572 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-10-29 06:02:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:36,572 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-29 06:02:36,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-29 06:02:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 06:02:36,573 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:36,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 06:02:36,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 06:02:36,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-29 06:02:36,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:36,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523073511] [2021-10-29 06:02:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:36,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:36,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523073511] [2021-10-29 06:02:36,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523073511] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:02:36,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:02:36,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 06:02:36,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671022355] [2021-10-29 06:02:36,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:02:36,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:02:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,599 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:36,616 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-29 06:02:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:02:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 06:02:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:36,617 INFO L225 Difference]: With dead ends: 25 [2021-10-29 06:02:36,617 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 06:02:36,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 06:02:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-29 06:02:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-29 06:02:36,622 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-10-29 06:02:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:36,623 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-29 06:02:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-29 06:02:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 06:02:36,624 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:36,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:02:36,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 06:02:36,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:36,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2021-10-29 06:02:36,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:36,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670524972] [2021-10-29 06:02:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:36,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:36,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670524972] [2021-10-29 06:02:36,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670524972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:02:36,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:02:36,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 06:02:36,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710348581] [2021-10-29 06:02:36,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:02:36,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:02:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,655 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:36,665 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-29 06:02:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:02:36,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 06:02:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:36,667 INFO L225 Difference]: With dead ends: 18 [2021-10-29 06:02:36,667 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 06:02:36,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:02:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 06:02:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-29 06:02:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-29 06:02:36,671 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-29 06:02:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:36,672 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-29 06:02:36,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-29 06:02:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 06:02:36,673 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:36,673 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:02:36,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 06:02:36,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2021-10-29 06:02:36,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:36,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503342648] [2021-10-29 06:02:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:36,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503342648] [2021-10-29 06:02:36,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503342648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:36,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323635348] [2021-10-29 06:02:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:36,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:36,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:36,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:36,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 06:02:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:36,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 06:02:36,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:36,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323635348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:36,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386850351] [2021-10-29 06:02:36,987 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 06:02:36,987 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:36,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:36,998 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:36,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:37,042 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:37,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:37,053 INFO L180 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-10-29 06:02:37,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:37,060 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:02:37,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:37,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,124 INFO L180 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-10-29 06:02:37,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:37,138 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:37,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:37,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,202 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:37,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:37,216 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:37,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:37,222 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:37,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:37,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:37,392 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-29 06:02:37,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:02:37,399 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:37,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:37,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:37,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2021-10-29 06:02:37,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755798213] [2021-10-29 06:02:37,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 06:02:37,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 06:02:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-29 06:02:37,786 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:37,918 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-10-29 06:02:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 06:02:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 06:02:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:37,924 INFO L225 Difference]: With dead ends: 43 [2021-10-29 06:02:37,924 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 06:02:37,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-10-29 06:02:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 06:02:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2021-10-29 06:02:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 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) [2021-10-29 06:02:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-29 06:02:37,940 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2021-10-29 06:02:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-29 06:02:37,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-29 06:02:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 06:02:37,943 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:37,943 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2021-10-29 06:02:37,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:38,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:38,157 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 1 times [2021-10-29 06:02:38,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:38,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455561342] [2021-10-29 06:02:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:38,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:38,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:38,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455561342] [2021-10-29 06:02:38,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455561342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:38,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148478934] [2021-10-29 06:02:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:38,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:38,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:38,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:38,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 06:02:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:38,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 06:02:38,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:38,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:38,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148478934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:38,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1886410733] [2021-10-29 06:02:38,431 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 06:02:38,431 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:38,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:38,432 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:38,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:38,445 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:38,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:38,449 INFO L180 QuantifierPusher]: treesize reduction 10, result has 56.5 percent of original size [2021-10-29 06:02:38,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:38,453 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:38,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:38,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,466 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-10-29 06:02:38,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:38,473 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:38,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:38,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,490 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:38,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:38,493 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:38,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:38,498 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:38,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:38,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:38,584 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-29 06:02:38,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:02:38,594 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:38,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:38,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:38,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-29 06:02:38,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173587314] [2021-10-29 06:02:38,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 06:02:38,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 06:02:38,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-29 06:02:38,838 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:38,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:38,918 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-10-29 06:02:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 06:02:38,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 06:02:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:38,922 INFO L225 Difference]: With dead ends: 76 [2021-10-29 06:02:38,923 INFO L226 Difference]: Without dead ends: 75 [2021-10-29 06:02:38,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-29 06:02:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-29 06:02:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-10-29 06:02:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-10-29 06:02:38,950 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 16 [2021-10-29 06:02:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:38,951 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-10-29 06:02:38,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-10-29 06:02:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 06:02:38,952 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:38,953 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-29 06:02:38,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:39,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-29 06:02:39,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:39,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash -537305888, now seen corresponding path program 1 times [2021-10-29 06:02:39,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:39,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664887978] [2021-10-29 06:02:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:39,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 06:02:39,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:39,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664887978] [2021-10-29 06:02:39,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664887978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:39,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803293360] [2021-10-29 06:02:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:39,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:39,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:39,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:39,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 06:02:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:39,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 06:02:39,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:39,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:39,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803293360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:39,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591950471] [2021-10-29 06:02:39,434 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:02:39,434 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:39,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:39,435 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:39,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:39,445 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:39,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:39,448 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:39,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:39,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,456 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-29 06:02:39,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:39,460 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:02:39,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:39,464 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-29 06:02:39,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:39,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,504 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:02:39,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:39,515 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:39,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:39,523 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:02:39,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:02:39,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,568 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:39,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:39,581 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:39,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:39,585 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:02:39,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:02:39,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,608 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:39,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:39,612 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:02:39,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:39,616 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:02:39,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:02:39,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,631 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:39,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:39,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:39,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:02:39,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,703 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:02:39,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:02:39,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:39,746 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:39,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:39,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:39,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2021-10-29 06:02:39,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827546700] [2021-10-29 06:02:39,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 06:02:39,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 06:02:39,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-29 06:02:39,959 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:40,014 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2021-10-29 06:02:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 06:02:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 06:02:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:40,017 INFO L225 Difference]: With dead ends: 155 [2021-10-29 06:02:40,017 INFO L226 Difference]: Without dead ends: 102 [2021-10-29 06:02:40,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-10-29 06:02:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-29 06:02:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-29 06:02:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.15) internal successors, (115), 101 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-10-29 06:02:40,028 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 18 [2021-10-29 06:02:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:40,028 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-10-29 06:02:40,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-10-29 06:02:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-29 06:02:40,030 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:40,030 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2021-10-29 06:02:40,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:40,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-10-29 06:02:40,244 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 2 times [2021-10-29 06:02:40,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:40,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68389550] [2021-10-29 06:02:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:40,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:40,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:40,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68389550] [2021-10-29 06:02:40,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68389550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:40,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472866048] [2021-10-29 06:02:40,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:02:40,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:40,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:40,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:40,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 06:02:40,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-29 06:02:40,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:40,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 06:02:40,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:40,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:40,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472866048] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:40,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [465422200] [2021-10-29 06:02:40,791 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 06:02:40,791 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:40,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:40,791 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:40,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:40,798 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:40,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:40,801 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-29 06:02:40,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:40,804 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:02:40,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:40,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,812 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.8 percent of original size [2021-10-29 06:02:40,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:40,817 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:40,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:40,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,828 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:40,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:40,831 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:40,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:40,835 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:40,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:40,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:40,883 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-29 06:02:40,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:02:40,888 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:41,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:41,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:41,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-10-29 06:02:41,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498528840] [2021-10-29 06:02:41,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-29 06:02:41,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-29 06:02:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-29 06:02:41,157 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:41,305 INFO L93 Difference]: Finished difference Result 551 states and 644 transitions. [2021-10-29 06:02:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 06:02:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 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 40 [2021-10-29 06:02:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:41,309 INFO L225 Difference]: With dead ends: 551 [2021-10-29 06:02:41,310 INFO L226 Difference]: Without dead ends: 550 [2021-10-29 06:02:41,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-29 06:02:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-29 06:02:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 363. [2021-10-29 06:02:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.1662049861495845) internal successors, (421), 362 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 421 transitions. [2021-10-29 06:02:41,344 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 421 transitions. Word has length 40 [2021-10-29 06:02:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:41,344 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 421 transitions. [2021-10-29 06:02:41,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 421 transitions. [2021-10-29 06:02:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 06:02:41,347 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:41,347 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1] [2021-10-29 06:02:41,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:41,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-29 06:02:41,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash 769890654, now seen corresponding path program 2 times [2021-10-29 06:02:41,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:41,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52109497] [2021-10-29 06:02:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:41,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:41,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:41,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52109497] [2021-10-29 06:02:41,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52109497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:41,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351952483] [2021-10-29 06:02:41,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:02:41,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:41,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:41,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:41,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 06:02:41,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-29 06:02:41,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:41,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 06:02:41,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:41,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:42,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351952483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:42,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1865978385] [2021-10-29 06:02:42,049 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:02:42,050 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:42,050 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:42,051 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:42,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:42,070 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:42,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:42,074 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:42,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:42,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,083 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-29 06:02:42,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:42,091 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:42,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:42,099 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:42,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:42,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,116 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:02:42,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:42,126 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:42,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:42,132 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:02:42,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:02:42,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,158 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:42,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:42,168 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:42,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:42,172 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:02:42,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:02:42,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,197 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:42,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:42,201 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:02:42,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:42,210 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:02:42,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:02:42,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,222 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:42,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:42,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:42,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:02:42,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,276 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:02:42,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:02:42,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:42,305 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:42,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:42,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:42,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-10-29 06:02:42,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222792898] [2021-10-29 06:02:42,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 06:02:42,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 06:02:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-29 06:02:42,516 INFO L87 Difference]: Start difference. First operand 363 states and 421 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:42,573 INFO L93 Difference]: Finished difference Result 585 states and 680 transitions. [2021-10-29 06:02:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 06:02:42,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-29 06:02:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:42,575 INFO L225 Difference]: With dead ends: 585 [2021-10-29 06:02:42,575 INFO L226 Difference]: Without dead ends: 243 [2021-10-29 06:02:42,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-29 06:02:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-29 06:02:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-29 06:02:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 1.1369294605809128) internal successors, (274), 242 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2021-10-29 06:02:42,590 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 54 [2021-10-29 06:02:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:42,590 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2021-10-29 06:02:42,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2021-10-29 06:02:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-29 06:02:42,594 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:42,594 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2021-10-29 06:02:42,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:42,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-10-29 06:02:42,820 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 3 times [2021-10-29 06:02:42,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:42,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800505126] [2021-10-29 06:02:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:42,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:43,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:43,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800505126] [2021-10-29 06:02:43,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800505126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:43,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766511636] [2021-10-29 06:02:43,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:02:43,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:43,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:43,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 06:02:43,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:02:43,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:43,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-29 06:02:43,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:43,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766511636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:43,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1714620393] [2021-10-29 06:02:43,954 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 06:02:43,954 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:43,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:43,954 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:43,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:43,960 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:43,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:43,974 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-29 06:02:43,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:43,977 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:02:43,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:43,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:43,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:43,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:43,986 INFO L180 QuantifierPusher]: treesize reduction 11, result has 71.8 percent of original size [2021-10-29 06:02:43,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:43,990 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:43,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:43,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:43,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:43,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:43,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,001 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:44,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:44,004 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:44,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:44,008 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:44,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:44,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:44,052 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-29 06:02:44,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:02:44,055 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:44,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:44,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:44,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2021-10-29 06:02:44,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026255521] [2021-10-29 06:02:44,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-29 06:02:44,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-29 06:02:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-10-29 06:02:44,520 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:44,896 INFO L93 Difference]: Finished difference Result 2182 states and 2553 transitions. [2021-10-29 06:02:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-29 06:02:44,897 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 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 88 [2021-10-29 06:02:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:44,910 INFO L225 Difference]: With dead ends: 2182 [2021-10-29 06:02:44,911 INFO L226 Difference]: Without dead ends: 2181 [2021-10-29 06:02:44,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 226 SyntacticMatches, 15 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-10-29 06:02:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2021-10-29 06:02:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 927. [2021-10-29 06:02:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 925 states have (on average 1.1686486486486487) internal successors, (1081), 926 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1081 transitions. [2021-10-29 06:02:44,977 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1081 transitions. Word has length 88 [2021-10-29 06:02:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:44,978 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1081 transitions. [2021-10-29 06:02:44,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:44,978 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1081 transitions. [2021-10-29 06:02:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-29 06:02:44,980 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:44,980 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 10, 5, 5, 5, 1, 1] [2021-10-29 06:02:45,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:45,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:45,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:45,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 421978100, now seen corresponding path program 3 times [2021-10-29 06:02:45,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:45,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999864303] [2021-10-29 06:02:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:45,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:45,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:45,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999864303] [2021-10-29 06:02:45,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999864303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:45,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266304324] [2021-10-29 06:02:45,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:02:45,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:45,368 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:45,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 06:02:45,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:02:45,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:45,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 06:02:45,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:45,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:46,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266304324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:46,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370042138] [2021-10-29 06:02:46,176 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:02:46,176 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:46,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:46,176 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:46,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:46,184 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:46,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:46,186 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:46,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:46,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,194 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-29 06:02:46,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:46,197 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:46,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:46,199 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:46,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:46,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,215 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:02:46,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:46,219 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:46,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:46,226 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:02:46,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:02:46,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,257 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:46,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:46,261 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:46,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:46,263 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:02:46,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:02:46,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,278 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:46,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:46,281 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:02:46,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:46,284 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:02:46,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:02:46,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,293 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:46,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:46,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:46,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:02:46,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,336 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:02:46,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:02:46,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:46,357 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:46,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:46,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:46,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-10-29 06:02:46,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279891012] [2021-10-29 06:02:46,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-29 06:02:46,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-29 06:02:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-10-29 06:02:46,579 INFO L87 Difference]: Start difference. First operand 927 states and 1081 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:46,718 INFO L93 Difference]: Finished difference Result 1449 states and 1694 transitions. [2021-10-29 06:02:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 06:02:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-29 06:02:46,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:46,723 INFO L225 Difference]: With dead ends: 1449 [2021-10-29 06:02:46,723 INFO L226 Difference]: Without dead ends: 579 [2021-10-29 06:02:46,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2021-10-29 06:02:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-10-29 06:02:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2021-10-29 06:02:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 577 states have (on average 1.1403812824956672) internal successors, (658), 578 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 658 transitions. [2021-10-29 06:02:46,750 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 658 transitions. Word has length 90 [2021-10-29 06:02:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:46,751 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 658 transitions. [2021-10-29 06:02:46,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 658 transitions. [2021-10-29 06:02:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-29 06:02:46,760 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:46,760 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 22, 22, 22, 5, 5, 5, 1, 1] [2021-10-29 06:02:46,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:46,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:46,976 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1988381664, now seen corresponding path program 4 times [2021-10-29 06:02:46,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:46,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490213387] [2021-10-29 06:02:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:46,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:47,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:47,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490213387] [2021-10-29 06:02:47,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490213387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:47,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294841759] [2021-10-29 06:02:47,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 06:02:47,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:47,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 06:02:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:47,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 06:02:47,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:48,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 382 proven. 1430 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:49,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294841759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:49,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089352750] [2021-10-29 06:02:49,089 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:02:49,089 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:49,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:49,090 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:49,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:49,100 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:49,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:49,102 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:49,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:49,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,111 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-29 06:02:49,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:49,114 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:49,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:49,116 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:49,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:49,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,129 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:02:49,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:49,134 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:49,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:49,137 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:02:49,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:02:49,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,153 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:49,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:49,156 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:49,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:49,158 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:02:49,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:02:49,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,175 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:49,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:49,178 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:02:49,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:49,180 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:02:49,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:02:49,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,189 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:49,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:49,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:49,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:02:49,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,231 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:02:49,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:02:49,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:49,259 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:49,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:49,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:49,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-10-29 06:02:49,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50949480] [2021-10-29 06:02:49,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-29 06:02:49,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:49,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-29 06:02:49,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1170, Invalid=2022, Unknown=0, NotChecked=0, Total=3192 [2021-10-29 06:02:49,527 INFO L87 Difference]: Start difference. First operand 579 states and 658 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:49,751 INFO L93 Difference]: Finished difference Result 773 states and 881 transitions. [2021-10-29 06:02:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-29 06:02:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 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 162 [2021-10-29 06:02:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:49,755 INFO L225 Difference]: With dead ends: 773 [2021-10-29 06:02:49,755 INFO L226 Difference]: Without dead ends: 323 [2021-10-29 06:02:49,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1170, Invalid=2022, Unknown=0, NotChecked=0, Total=3192 [2021-10-29 06:02:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-29 06:02:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 308. [2021-10-29 06:02:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 306 states have (on average 1.0718954248366013) internal successors, (328), 307 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 328 transitions. [2021-10-29 06:02:49,768 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 328 transitions. Word has length 162 [2021-10-29 06:02:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:49,769 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 328 transitions. [2021-10-29 06:02:49,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 328 transitions. [2021-10-29 06:02:49,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-29 06:02:49,771 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:49,771 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2021-10-29 06:02:49,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:49,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-10-29 06:02:49,996 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 4 times [2021-10-29 06:02:49,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:49,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848607764] [2021-10-29 06:02:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:49,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:50,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:50,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848607764] [2021-10-29 06:02:50,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848607764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:50,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865017962] [2021-10-29 06:02:50,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 06:02:50,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:50,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:50,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:50,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 06:02:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:50,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-29 06:02:50,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:51,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:53,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865017962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:53,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1357432112] [2021-10-29 06:02:53,119 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 06:02:53,119 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:53,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:53,120 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:53,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:53,131 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:53,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:53,133 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-29 06:02:53,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:53,135 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:53,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:53,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,143 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-10-29 06:02:53,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:53,146 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:53,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:53,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,155 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:53,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:53,157 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:53,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:53,161 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:53,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:53,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:53,192 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-29 06:02:53,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:02:53,194 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:54,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:54,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:54,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2021-10-29 06:02:54,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412772744] [2021-10-29 06:02:54,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-29 06:02:54,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-29 06:02:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2036, Invalid=2794, Unknown=0, NotChecked=0, Total=4830 [2021-10-29 06:02:54,141 INFO L87 Difference]: Start difference. First operand 308 states and 328 transitions. Second operand has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:54,648 INFO L93 Difference]: Finished difference Result 1286 states and 1480 transitions. [2021-10-29 06:02:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-29 06:02:54,649 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 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 184 [2021-10-29 06:02:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:54,657 INFO L225 Difference]: With dead ends: 1286 [2021-10-29 06:02:54,657 INFO L226 Difference]: Without dead ends: 1285 [2021-10-29 06:02:54,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 482 SyntacticMatches, 31 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3464 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2036, Invalid=2794, Unknown=0, NotChecked=0, Total=4830 [2021-10-29 06:02:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-10-29 06:02:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1251. [2021-10-29 06:02:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1249 states have (on average 1.1417133706965572) internal successors, (1426), 1250 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1426 transitions. [2021-10-29 06:02:54,705 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1426 transitions. Word has length 184 [2021-10-29 06:02:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:54,706 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1426 transitions. [2021-10-29 06:02:54,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.841269841269841) internal successors, (368), 63 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1426 transitions. [2021-10-29 06:02:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-10-29 06:02:54,711 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:54,711 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 46, 46, 46, 5, 5, 5, 1, 1] [2021-10-29 06:02:54,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:54,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:54,928 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash -510101384, now seen corresponding path program 5 times [2021-10-29 06:02:54,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:54,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876240930] [2021-10-29 06:02:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:54,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:02:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 790 proven. 6302 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 06:02:56,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:56,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876240930] [2021-10-29 06:02:56,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876240930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:02:56,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740736365] [2021-10-29 06:02:56,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:02:56,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:56,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:56,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:56,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 06:02:56,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-29 06:02:56,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:56,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 06:02:56,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1045 proven. 65 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2021-10-29 06:02:57,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1045 proven. 65 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2021-10-29 06:02:58,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740736365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:58,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [480578920] [2021-10-29 06:02:58,311 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:02:58,311 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:58,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:58,312 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:58,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:58,318 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:02:58,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:58,320 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:02:58,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:58,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,325 INFO L180 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-10-29 06:02:58,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:58,327 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:02:58,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:02:58,331 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-29 06:02:58,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:02:58,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,349 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:02:58,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:02:58,352 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:02:58,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:02:58,356 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:02:58,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:02:58,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,375 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:02:58,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:02:58,377 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:02:58,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:58,379 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:02:58,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:02:58,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,391 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:58,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:58,394 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:02:58,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:02:58,406 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:02:58,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:02:58,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,415 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:02:58,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:02:58,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:58,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:02:58,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,464 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:02:58,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:02:58,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:58,484 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:58,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:58,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:02:58,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 7, 7] total 61 [2021-10-29 06:02:58,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538763702] [2021-10-29 06:02:58,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-29 06:02:58,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-29 06:02:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2936, Unknown=0, NotChecked=0, Total=4830 [2021-10-29 06:02:58,861 INFO L87 Difference]: Start difference. First operand 1251 states and 1426 transitions. Second operand has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:59,288 INFO L93 Difference]: Finished difference Result 3228 states and 3909 transitions. [2021-10-29 06:02:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-29 06:02:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 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 306 [2021-10-29 06:02:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:59,302 INFO L225 Difference]: With dead ends: 3228 [2021-10-29 06:02:59,302 INFO L226 Difference]: Without dead ends: 2250 [2021-10-29 06:02:59,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1894, Invalid=2936, Unknown=0, NotChecked=0, Total=4830 [2021-10-29 06:02:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-10-29 06:02:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2250. [2021-10-29 06:02:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2248 states have (on average 1.150355871886121) internal successors, (2586), 2249 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2586 transitions. [2021-10-29 06:02:59,424 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2586 transitions. Word has length 306 [2021-10-29 06:02:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:59,425 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2586 transitions. [2021-10-29 06:02:59,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.918032786885246) internal successors, (361), 61 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:02:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2586 transitions. [2021-10-29 06:02:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-10-29 06:02:59,433 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:59,433 INFO L513 BasicCegarLoop]: trace histogram [60, 59, 59, 48, 48, 48, 12, 12, 12, 1, 1] [2021-10-29 06:02:59,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:59,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:59,656 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:02:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash 501858831, now seen corresponding path program 6 times [2021-10-29 06:02:59,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:59,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75040668] [2021-10-29 06:02:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:59,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-29 06:03:00,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:03:00,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75040668] [2021-10-29 06:03:00,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75040668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:03:00,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721166698] [2021-10-29 06:03:00,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:03:00,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:00,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:00,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:00,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 06:03:01,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:03:01,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:03:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-29 06:03:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-29 06:03:02,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:03:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 2182 proven. 6864 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-29 06:03:03,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721166698] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:03:03,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058843402] [2021-10-29 06:03:03,789 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:03:03,790 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:03:03,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:03:03,790 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:03:03,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:03:03,798 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:03:03,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:03:03,800 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:03:03,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:03,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,809 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-29 06:03:03,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:03,817 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:03:03,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:03:03,819 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:03:03,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:03:03,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,854 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:03:03,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:03:03,858 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:03:03,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:03:03,861 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:03:03,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:03:03,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,880 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:03:03,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:03,882 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:03:03,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:03:03,885 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:03:03,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:03:03,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,896 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:03:03,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:03:03,899 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:03:03,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:03:03,901 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:03:03,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:03:03,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,910 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:03:03,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:03:03,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:03,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:03:03,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,948 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:03:03,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:03:03,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:03,966 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:03:04,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:03:04,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:03:04,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2021-10-29 06:03:04,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43884675] [2021-10-29 06:03:04,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-29 06:03:04,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:03:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-29 06:03:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2021-10-29 06:03:04,364 INFO L87 Difference]: Start difference. First operand 2250 states and 2586 transitions. Second operand has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:03:04,631 INFO L93 Difference]: Finished difference Result 4233 states and 4908 transitions. [2021-10-29 06:03:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-29 06:03:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 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 360 [2021-10-29 06:03:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:03:04,644 INFO L225 Difference]: With dead ends: 4233 [2021-10-29 06:03:04,644 INFO L226 Difference]: Without dead ends: 2268 [2021-10-29 06:03:04,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1068 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2021-10-29 06:03:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-10-29 06:03:04,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2268. [2021-10-29 06:03:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2266 states have (on average 1.1491615180935568) internal successors, (2604), 2267 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2604 transitions. [2021-10-29 06:03:04,740 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2604 transitions. Word has length 360 [2021-10-29 06:03:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:03:04,741 INFO L470 AbstractCegarLoop]: Abstraction has 2268 states and 2604 transitions. [2021-10-29 06:03:04,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2604 transitions. [2021-10-29 06:03:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-10-29 06:03:04,748 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:03:04,749 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1] [2021-10-29 06:03:04,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:04,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable474 [2021-10-29 06:03:04,964 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:03:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:03:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 812314777, now seen corresponding path program 5 times [2021-10-29 06:03:04,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:03:04,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122666045] [2021-10-29 06:03:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:04,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:03:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:06,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:03:06,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122666045] [2021-10-29 06:03:06,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122666045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:03:06,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900869053] [2021-10-29 06:03:06,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:03:06,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:06,715 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:06,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-29 06:03:07,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-29 06:03:07,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:03:07,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-29 06:03:07,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:08,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:03:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:13,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900869053] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:03:13,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337397733] [2021-10-29 06:03:13,378 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 06:03:13,378 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:03:13,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:03:13,379 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:03:13,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:03:13,398 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:03:13,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:13,400 INFO L180 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-10-29 06:03:13,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:13,402 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:03:13,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:03:13,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,408 INFO L180 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-10-29 06:03:13,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:03:13,411 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:03:13,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:03:13,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,419 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:03:13,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:13,421 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:03:13,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:03:13,424 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:03:13,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:13,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:13,451 INFO L180 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-10-29 06:03:13,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-29 06:03:13,453 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:03:16,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:03:16,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:03:16,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2021-10-29 06:03:16,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496701067] [2021-10-29 06:03:16,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-29 06:03:16,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:03:16,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-29 06:03:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8148, Invalid=9674, Unknown=0, NotChecked=0, Total=17822 [2021-10-29 06:03:16,128 INFO L87 Difference]: Start difference. First operand 2268 states and 2604 transitions. Second operand has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:03:19,180 INFO L93 Difference]: Finished difference Result 69548 states and 81432 transitions. [2021-10-29 06:03:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-29 06:03:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 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 376 [2021-10-29 06:03:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:03:19,434 INFO L225 Difference]: With dead ends: 69548 [2021-10-29 06:03:19,434 INFO L226 Difference]: Without dead ends: 69547 [2021-10-29 06:03:19,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 994 SyntacticMatches, 63 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13096 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=8148, Invalid=9674, Unknown=0, NotChecked=0, Total=17822 [2021-10-29 06:03:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69547 states. [2021-10-29 06:03:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69547 to 8961. [2021-10-29 06:03:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8961 states, 8959 states have (on average 1.1668713026007367) internal successors, (10454), 8960 states have internal predecessors, (10454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 10454 transitions. [2021-10-29 06:03:21,277 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 10454 transitions. Word has length 376 [2021-10-29 06:03:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:03:21,278 INFO L470 AbstractCegarLoop]: Abstraction has 8961 states and 10454 transitions. [2021-10-29 06:03:21,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.921259842519685) internal successors, (752), 127 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 10454 transitions. [2021-10-29 06:03:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-10-29 06:03:21,286 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:03:21,286 INFO L513 BasicCegarLoop]: trace histogram [63, 62, 62, 51, 51, 51, 12, 12, 12, 1, 1] [2021-10-29 06:03:21,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:21,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable539 [2021-10-29 06:03:21,500 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:03:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:03:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2002951930, now seen corresponding path program 7 times [2021-10-29 06:03:21,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:03:21,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524476396] [2021-10-29 06:03:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:21,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:03:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:23,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:03:23,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524476396] [2021-10-29 06:03:23,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524476396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:03:23,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419486282] [2021-10-29 06:03:23,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 06:03:23,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:23,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:23,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:23,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-29 06:03:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:24,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-29 06:03:24,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:25,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:03:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10432 backedges. 0 proven. 10432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:30,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419486282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:03:30,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [567997690] [2021-10-29 06:03:30,207 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:03:30,207 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:03:30,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:03:30,208 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:03:30,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:03:30,214 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:03:30,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:03:30,216 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:03:30,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:30,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,225 INFO L180 QuantifierPusher]: treesize reduction 20, result has 39.4 percent of original size [2021-10-29 06:03:30,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:03:30,227 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:03:30,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:03:30,228 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-29 06:03:30,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:03:30,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,268 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:03:30,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:03:30,271 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:03:30,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:03:30,274 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:03:30,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:03:30,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,292 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:03:30,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:03:30,295 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:03:30,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:03:30,297 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:03:30,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:03:30,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,308 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:03:30,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:03:30,310 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:03:30,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:03:30,312 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:03:30,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:03:30,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,320 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:03:30,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:03:30,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:03:30,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:03:30,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,354 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:03:30,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:03:30,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:03:30,371 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:03:30,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:03:30,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:03:30,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2021-10-29 06:03:30,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070514887] [2021-10-29 06:03:30,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-29 06:03:30,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:03:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-29 06:03:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8320, Invalid=10312, Unknown=0, NotChecked=0, Total=18632 [2021-10-29 06:03:30,806 INFO L87 Difference]: Start difference. First operand 8961 states and 10454 transitions. Second operand has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:03:33,152 INFO L93 Difference]: Finished difference Result 25114 states and 31990 transitions. [2021-10-29 06:03:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-29 06:03:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 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 378 [2021-10-29 06:03:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:03:33,192 INFO L225 Difference]: With dead ends: 25114 [2021-10-29 06:03:33,192 INFO L226 Difference]: Without dead ends: 25113 [2021-10-29 06:03:33,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1733 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8320, Invalid=10312, Unknown=0, NotChecked=0, Total=18632 [2021-10-29 06:03:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25113 states. [2021-10-29 06:03:34,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25113 to 25113. [2021-10-29 06:03:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25113 states, 25111 states have (on average 1.1647485165863565) internal successors, (29248), 25112 states have internal predecessors, (29248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29248 transitions. [2021-10-29 06:03:34,399 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29248 transitions. Word has length 378 [2021-10-29 06:03:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:03:34,400 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29248 transitions. [2021-10-29 06:03:34,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.952755905511811) internal successors, (756), 127 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29248 transitions. [2021-10-29 06:03:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2021-10-29 06:03:34,547 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:03:34,547 INFO L513 BasicCegarLoop]: trace histogram [127, 127, 126, 126, 126, 126, 1, 1] [2021-10-29 06:03:34,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:34,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:34,764 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:03:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:03:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 690075353, now seen corresponding path program 6 times [2021-10-29 06:03:34,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:03:34,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923350910] [2021-10-29 06:03:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:34,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:03:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 0 proven. 47628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:40,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:03:40,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923350910] [2021-10-29 06:03:40,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923350910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:03:40,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613147343] [2021-10-29 06:03:40,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:03:40,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:40,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:40,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:40,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-29 06:03:41,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:03:41,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:03:41,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-29 06:03:41,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 30903 proven. 0 refuted. 0 times theorem prover too weak. 16725 trivial. 0 not checked. [2021-10-29 06:03:46,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:03:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 47628 backedges. 30903 proven. 0 refuted. 0 times theorem prover too weak. 16725 trivial. 0 not checked. [2021-10-29 06:03:48,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613147343] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:03:48,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 06:03:48,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53, 53] imperfect sequences [127] total 180 [2021-10-29 06:03:48,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164735207] [2021-10-29 06:03:48,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-29 06:03:48,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:03:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-29 06:03:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2021-10-29 06:03:48,382 INFO L87 Difference]: Start difference. First operand 25113 states and 29248 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:03:48,783 INFO L93 Difference]: Finished difference Result 25573 states and 29784 transitions. [2021-10-29 06:03:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-29 06:03:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 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 760 [2021-10-29 06:03:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:03:48,786 INFO L225 Difference]: With dead ends: 25573 [2021-10-29 06:03:48,786 INFO L226 Difference]: Without dead ends: 763 [2021-10-29 06:03:48,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1645 GetRequests, 1465 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6678 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2021-10-29 06:03:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-10-29 06:03:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2021-10-29 06:03:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.0013123359580052) internal successors, (763), 762 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 763 transitions. [2021-10-29 06:03:48,844 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 763 transitions. Word has length 760 [2021-10-29 06:03:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:03:48,845 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 763 transitions. [2021-10-29 06:03:48,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:03:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 763 transitions. [2021-10-29 06:03:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-10-29 06:03:48,855 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:03:48,855 INFO L513 BasicCegarLoop]: trace histogram [127, 126, 126, 76, 76, 76, 51, 51, 51, 1, 1] [2021-10-29 06:03:48,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:49,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable633 [2021-10-29 06:03:49,080 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:03:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:03:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1305009222, now seen corresponding path program 8 times [2021-10-29 06:03:49,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:03:49,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147304201] [2021-10-29 06:03:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:49,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:03:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:03:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 0 proven. 40128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:03:55,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:03:55,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147304201] [2021-10-29 06:03:55,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147304201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:03:55,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88079405] [2021-10-29 06:03:55,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:03:55,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:55,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:55,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-29 06:03:56,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2021-10-29 06:03:56,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:03:56,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-29 06:03:56,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:03:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 15502 proven. 17176 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-10-29 06:03:58,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:04:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 40128 backedges. 15502 proven. 17176 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-10-29 06:04:08,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88079405] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:04:08,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1656040575] [2021-10-29 06:04:08,055 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:04:08,055 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:04:08,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:04:08,055 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:04:08,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:04:08,063 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:04:08,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:04:08,064 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:04:08,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:04:08,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,069 INFO L180 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-10-29 06:04:08,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:04:08,071 INFO L180 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-10-29 06:04:08,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:04:08,073 INFO L180 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size [2021-10-29 06:04:08,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:04:08,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,084 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:04:08,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:04:08,087 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:04:08,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:04:08,089 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:04:08,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:04:08,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,103 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:04:08,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:04:08,105 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:04:08,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:04:08,107 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:04:08,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:04:08,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,116 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:04:08,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:04:08,118 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:04:08,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:04:08,120 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:04:08,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:04:08,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,126 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:04:08,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:04:08,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:04:08,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:04:08,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,153 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:04:08,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:04:08,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:08,170 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:04:08,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:04:08,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:04:08,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 78, 78] total 205 [2021-10-29 06:04:08,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121743845] [2021-10-29 06:04:08,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2021-10-29 06:04:08,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:04:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2021-10-29 06:04:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21463, Invalid=24547, Unknown=0, NotChecked=0, Total=46010 [2021-10-29 06:04:08,747 INFO L87 Difference]: Start difference. First operand 763 states and 763 transitions. Second operand has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:04:13,268 INFO L93 Difference]: Finished difference Result 1232 states and 1309 transitions. [2021-10-29 06:04:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2021-10-29 06:04:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 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 762 [2021-10-29 06:04:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:04:13,272 INFO L225 Difference]: With dead ends: 1232 [2021-10-29 06:04:13,272 INFO L226 Difference]: Without dead ends: 1231 [2021-10-29 06:04:13,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2411 GetRequests, 2198 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=21463, Invalid=24547, Unknown=0, NotChecked=0, Total=46010 [2021-10-29 06:04:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-10-29 06:04:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-10-29 06:04:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 1.0008130081300812) internal successors, (1231), 1230 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1231 transitions. [2021-10-29 06:04:13,306 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1231 transitions. Word has length 762 [2021-10-29 06:04:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:04:13,307 INFO L470 AbstractCegarLoop]: Abstraction has 1231 states and 1231 transitions. [2021-10-29 06:04:13,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 205 states have (on average 6.0) internal successors, (1230), 206 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1231 transitions. [2021-10-29 06:04:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2021-10-29 06:04:13,321 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:04:13,322 INFO L513 BasicCegarLoop]: trace histogram [205, 204, 204, 154, 154, 154, 51, 51, 51, 1, 1] [2021-10-29 06:04:13,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-29 06:04:13,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable634 [2021-10-29 06:04:13,536 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 06:04:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:04:13,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1334028028, now seen corresponding path program 9 times [2021-10-29 06:04:13,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:04:13,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265420587] [2021-10-29 06:04:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:04:13,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:04:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:04:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 0 proven. 109548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:04:28,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:04:28,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265420587] [2021-10-29 06:04:28,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265420587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:04:28,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910196796] [2021-10-29 06:04:28,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:04:28,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:04:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:04:28,272 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:04:28,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-29 06:04:30,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:04:30,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:04:30,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-29 06:04:30,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:04:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 65890 proven. 12752 refuted. 0 times theorem prover too weak. 30906 trivial. 0 not checked. [2021-10-29 06:04:37,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:04:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 109548 backedges. 65890 proven. 12752 refuted. 0 times theorem prover too weak. 30906 trivial. 0 not checked. [2021-10-29 06:04:40,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910196796] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:04:40,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2133658002] [2021-10-29 06:04:40,285 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 06:04:40,285 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:04:40,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:04:40,286 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:04:40,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:04:40,291 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:04:40,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:04:40,292 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:04:40,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:04:40,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,302 INFO L180 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-10-29 06:04:40,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:04:40,304 INFO L180 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-10-29 06:04:40,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 06:04:40,305 INFO L180 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-10-29 06:04:40,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 06:04:40,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,317 INFO L180 QuantifierPusher]: treesize reduction 29, result has 49.1 percent of original size [2021-10-29 06:04:40,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 06:04:40,320 INFO L180 QuantifierPusher]: treesize reduction 12, result has 73.9 percent of original size [2021-10-29 06:04:40,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 06:04:40,324 INFO L180 QuantifierPusher]: treesize reduction 16, result has 66.0 percent of original size [2021-10-29 06:04:40,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-29 06:04:40,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,336 INFO L180 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-10-29 06:04:40,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 06:04:40,338 INFO L180 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-10-29 06:04:40,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:04:40,340 INFO L180 QuantifierPusher]: treesize reduction 12, result has 57.1 percent of original size [2021-10-29 06:04:40,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 06:04:40,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,351 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:04:40,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:04:40,353 INFO L180 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-10-29 06:04:40,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-10-29 06:04:40,354 INFO L180 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-10-29 06:04:40,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:04:40,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,360 INFO L180 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-10-29 06:04:40,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-10-29 06:04:40,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:04:40,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 06:04:40,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,391 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.0 percent of original size [2021-10-29 06:04:40,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 06:04:40,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:04:40,405 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:04:41,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:04:41,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 06:04:41,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 54, 54] total 259 [2021-10-29 06:04:41,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039210715] [2021-10-29 06:04:41,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2021-10-29 06:04:41,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:04:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2021-10-29 06:04:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23155, Invalid=48937, Unknown=0, NotChecked=0, Total=72092 [2021-10-29 06:04:41,609 INFO L87 Difference]: Start difference. First operand 1231 states and 1231 transitions. Second operand has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:04:56,718 INFO L93 Difference]: Finished difference Result 1231 states and 1231 transitions. [2021-10-29 06:04:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-10-29 06:04:56,719 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 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 1230 [2021-10-29 06:04:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:04:56,721 INFO L225 Difference]: With dead ends: 1231 [2021-10-29 06:04:56,721 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 06:04:56,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4100 GetRequests, 3625 SyntacticMatches, 1 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36362 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=71518, Invalid=154582, Unknown=0, NotChecked=0, Total=226100 [2021-10-29 06:04:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 06:04:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 06:04:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 06:04:56,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1230 [2021-10-29 06:04:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:04:56,743 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 06:04:56,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 6.561538461538461) internal successors, (1706), 259 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:04:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 06:04:56,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 06:04:56,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 06:04:56,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 06:04:56,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 06:04:56,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 06:04:56,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 06:04:56,748 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 06:04:56,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-29 06:04:56,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:04:56,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 06:04:56,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:05:03,874 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification. DAG size of input: 1108 DAG size of output: 390 [2021-10-29 06:05:03,880 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 06:05:03,880 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 06:05:03,881 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-29 06:05:03,881 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-29 06:05:03,881 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-10-29 06:05:03,881 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-10-29 06:05:03,881 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-29 06:05:03,882 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-29 06:05:03,884 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse6 (<= ULTIMATE.start_main_~y~0 21)) (.cse10 (<= ULTIMATE.start_main_~y~0 31)) (.cse7 (<= ULTIMATE.start_main_~y~0 30)) (.cse20 (<= ULTIMATE.start_main_~y~0 25)) (.cse8 (<= ULTIMATE.start_main_~x~0 35)) (.cse14 (<= ULTIMATE.start_main_~y~0 20)) (.cse0 (<= ULTIMATE.start_main_~y~0 9)) (.cse18 (<= ULTIMATE.start_main_~y~0 15)) (.cse27 (<= ULTIMATE.start_main_~y~0 39)) (.cse32 (<= ULTIMATE.start_main_~y~0 42)) (.cse35 (<= ULTIMATE.start_main_~y~0 40)) (.cse21 (<= ULTIMATE.start_main_~y~0 46)) (.cse29 (<= ULTIMATE.start_main_~y~0 34)) (.cse31 (<= ULTIMATE.start_main_~y~0 4)) (.cse11 (<= ULTIMATE.start_main_~y~0 18)) (.cse30 (<= ULTIMATE.start_main_~y~0 43)) (.cse33 (<= ULTIMATE.start_main_~y~0 36)) (.cse19 (<= ULTIMATE.start_main_~x~0 44)) (.cse13 (<= ULTIMATE.start_main_~y~0 45)) (.cse26 (<= ULTIMATE.start_main_~y~0 10)) (.cse12 (<= ULTIMATE.start_main_~y~0 22)) (.cse41 (<= ULTIMATE.start_main_~y~0 3)) (.cse37 (<= ULTIMATE.start_main_~x~0 40)) (.cse44 (<= ULTIMATE.start_main_~y~0 1)) (.cse16 (<= ULTIMATE.start_main_~y~0 7)) (.cse22 (<= ULTIMATE.start_main_~y~0 0)) (.cse28 (<= ULTIMATE.start_main_~y~0 26)) (.cse40 (<= ULTIMATE.start_main_~y~0 14)) (.cse4 (<= ULTIMATE.start_main_~y~0 32)) (.cse17 (<= ULTIMATE.start_main_~y~0 37)) (.cse38 (<= ULTIMATE.start_main_~y~0 33)) (.cse49 (<= ULTIMATE.start_main_~y~0 27)) (.cse39 (<= ULTIMATE.start_main_~y~0 38)) (.cse42 (<= ULTIMATE.start_main_~y~0 44)) (.cse47 (<= ULTIMATE.start_main_~y~0 11)) (.cse45 (<= ULTIMATE.start_main_~y~0 48)) (.cse43 (<= ULTIMATE.start_main_~y~0 28)) (.cse9 (<= ULTIMATE.start_main_~y~0 19)) (.cse48 (<= ULTIMATE.start_main_~y~0 12)) (.cse15 (<= ULTIMATE.start_main_~y~0 6)) (.cse51 (<= ULTIMATE.start_main_~y~0 13)) (.cse5 (<= ULTIMATE.start_main_~y~0 2)) (.cse34 (<= ULTIMATE.start_main_~y~0 8)) (.cse23 (<= ULTIMATE.start_main_~y~0 41)) (.cse54 (<= ULTIMATE.start_main_~y~0 50)) (.cse50 (<= ULTIMATE.start_main_~y~0 17)) (.cse52 (<= ULTIMATE.start_main_~y~0 5)) (.cse2 (<= ULTIMATE.start_main_~y~0 49)) (.cse55 (<= ULTIMATE.start_main_~y~0 29)) (.cse46 (<= ULTIMATE.start_main_~y~0 23)) (.cse25 (<= ULTIMATE.start_main_~y~0 35)) (.cse3 (<= 51 ULTIMATE.start_main_~x~0)) (.cse36 (<= ULTIMATE.start_main_~y~0 16)) (.cse24 (<= ULTIMATE.start_main_~y~0 47)) (.cse1 (<= ULTIMATE.start_main_~x~0 51)) (.cse53 (<= ULTIMATE.start_main_~y~0 24)) (.cse56 (<= ULTIMATE.start_main_~x~0 29))) (or (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 53) .cse3) (and (<= 32 ULTIMATE.start_main_~x~0) .cse1 .cse4) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 100)) (and .cse6 (<= ULTIMATE.start_main_~x~0 81) .cse3) (and (<= 30 ULTIMATE.start_main_~x~0) .cse7 .cse8) (and (<= ULTIMATE.start_main_~x~0 83) .cse3 .cse9) (and .cse10 (<= ULTIMATE.start_main_~x~0 71) .cse3) (and .cse11 .cse3 (<= ULTIMATE.start_main_~x~0 84)) (and (<= ULTIMATE.start_main_~x~0 80) .cse12 .cse3) (and .cse13 (<= ULTIMATE.start_main_~x~0 57) .cse3) (and (<= 21 ULTIMATE.start_main_~x~0) .cse6 .cse1) (and (<= ULTIMATE.start_main_~x~0 82) .cse14 .cse3) (and .cse15 (<= ULTIMATE.start_main_~x~0 96) .cse3) (and (<= 31 ULTIMATE.start_main_~x~0) .cse10 .cse1) (and .cse7 (<= ULTIMATE.start_main_~x~0 72) .cse3) (and .cse16 .cse1 (<= 7 ULTIMATE.start_main_~x~0)) (and .cse17 (<= 37 ULTIMATE.start_main_~x~0) .cse1) (and .cse18 (<= 15 ULTIMATE.start_main_~x~0) .cse19) (and .cse20 .cse3 (<= ULTIMATE.start_main_~x~0 77)) (and .cse21 (<= 46 ULTIMATE.start_main_~x~0) .cse1) (and .cse22 .cse3 (<= ULTIMATE.start_main_~x~0 102)) (and (<= 25 ULTIMATE.start_main_~x~0) .cse20 (<= ULTIMATE.start_main_~x~0 25)) (and (<= 41 ULTIMATE.start_main_~x~0) .cse23 .cse1) (and (<= ULTIMATE.start_main_~x~0 55) .cse24 .cse3) (and .cse25 (<= 35 ULTIMATE.start_main_~x~0) .cse8) (and (<= ULTIMATE.start_main_~x~0 92) .cse3 .cse26) (and (<= 20 ULTIMATE.start_main_~x~0) .cse14 .cse1) (and (<= ULTIMATE.start_main_~x~0 93) .cse0 .cse3) (and (<= 39 ULTIMATE.start_main_~x~0) .cse27 .cse19) (and .cse3 (<= ULTIMATE.start_main_~x~0 76) .cse28) (and .cse29 (<= 34 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 34)) (and .cse18 (<= ULTIMATE.start_main_~x~0 87) .cse3) (and .cse30 .cse1 (<= 43 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 63) .cse27 .cse3) (and (<= 4 ULTIMATE.start_main_~x~0) .cse31 .cse1) (and .cse32 .cse1 (<= 42 ULTIMATE.start_main_~x~0)) (and .cse33 .cse1 (<= 36 ULTIMATE.start_main_~x~0)) (and (<= 8 ULTIMATE.start_main_~x~0) .cse1 .cse34) (and .cse35 (<= ULTIMATE.start_main_~x~0 62) .cse3) (and .cse32 (<= ULTIMATE.start_main_~x~0 60) .cse3) (and .cse36 .cse3 (<= ULTIMATE.start_main_~x~0 86)) (and .cse35 .cse37 (<= 40 ULTIMATE.start_main_~x~0)) (and .cse38 (<= ULTIMATE.start_main_~x~0 69) .cse3) (and .cse21 (<= ULTIMATE.start_main_~x~0 56) .cse3) (and .cse29 .cse3 (<= ULTIMATE.start_main_~x~0 68)) (and .cse31 (<= ULTIMATE.start_main_~x~0 98) .cse3) (and (<= ULTIMATE.start_main_~x~0 64) .cse39 .cse3) (and (<= 18 ULTIMATE.start_main_~x~0) .cse11 .cse1) (and .cse40 .cse1 (<= 14 ULTIMATE.start_main_~x~0)) (and .cse30 (<= ULTIMATE.start_main_~x~0 59) .cse3) (and (<= ULTIMATE.start_main_~x~0 66) .cse33 .cse3) (and (<= (+ ULTIMATE.start_main_~y~0 1) 0) (<= ULTIMATE.start_main_~x~0 103) .cse3) (and (<= ULTIMATE.start_main_~x~0 99) .cse41 .cse3) (and .cse42 (<= 44 ULTIMATE.start_main_~x~0) .cse19) (and (<= 28 ULTIMATE.start_main_~x~0) .cse1 .cse43) (and (<= ULTIMATE.start_main_~x~0 101) .cse3 .cse44) (and .cse13 (<= 45 ULTIMATE.start_main_~x~0) .cse1) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 10) .cse26) (and .cse12 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22)) (and .cse3 (<= ULTIMATE.start_main_~x~0 54) .cse45) (and (<= ULTIMATE.start_main_~x~0 3) .cse41 (<= 3 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) .cse46 .cse1) (and (<= 11 ULTIMATE.start_main_~x~0) .cse37 .cse47) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~x~0) .cse44) (and .cse16 .cse3 (<= ULTIMATE.start_main_~x~0 95)) (and .cse48 .cse1 (<= 12 ULTIMATE.start_main_~x~0)) (and .cse49 (<= 27 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 27)) (and (<= ULTIMATE.start_main_~x~0 0) .cse22 (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) .cse1 .cse28) (and .cse1 .cse3 (<= ULTIMATE.start_main_~y~0 51)) (and .cse40 (<= ULTIMATE.start_main_~x~0 88) .cse3) (and .cse50 (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17)) (and (<= ULTIMATE.start_main_~x~0 70) .cse3 .cse4) (and .cse51 (<= 13 ULTIMATE.start_main_~x~0) .cse1) (and .cse17 (<= ULTIMATE.start_main_~x~0 65) .cse3) (and .cse38 (<= 33 ULTIMATE.start_main_~x~0) .cse1) (and .cse49 .cse3 (<= ULTIMATE.start_main_~x~0 75)) (and (<= 38 ULTIMATE.start_main_~x~0) .cse1 .cse39) (and .cse42 .cse3 (<= ULTIMATE.start_main_~x~0 58)) (and .cse52 (<= ULTIMATE.start_main_~x~0 97) .cse3) (and (<= ULTIMATE.start_main_~x~0 91) .cse3 .cse47) (and (<= 48 ULTIMATE.start_main_~x~0) .cse1 .cse45) (and (<= ULTIMATE.start_main_~x~0 74) .cse3 .cse43) (and (<= 19 ULTIMATE.start_main_~x~0) .cse1 .cse9) (and .cse48 (<= ULTIMATE.start_main_~x~0 90) .cse3) (and .cse15 (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6)) (and .cse51 .cse3 (<= ULTIMATE.start_main_~x~0 89)) (and .cse53 (<= ULTIMATE.start_main_~x~0 78) .cse3) (and (<= 2 ULTIMATE.start_main_~x~0) .cse5 (<= ULTIMATE.start_main_~x~0 2)) (and (<= ULTIMATE.start_main_~x~0 94) .cse3 .cse34) (and .cse23 (<= ULTIMATE.start_main_~x~0 61) .cse3) (and (<= ULTIMATE.start_main_~x~0 52) .cse54 .cse3) (and .cse1 .cse54 (<= 50 ULTIMATE.start_main_~x~0)) (and .cse50 (<= ULTIMATE.start_main_~x~0 85) .cse3) (and .cse55 (<= 29 ULTIMATE.start_main_~x~0) .cse56) (and (<= 5 ULTIMATE.start_main_~x~0) .cse52 .cse1) (and .cse2 (<= 49 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 73) .cse55 .cse3) (and .cse46 .cse3 (<= ULTIMATE.start_main_~x~0 79)) (and .cse25 .cse3 (<= ULTIMATE.start_main_~x~0 67)) (and .cse36 (<= 16 ULTIMATE.start_main_~x~0) .cse1) (and (<= 47 ULTIMATE.start_main_~x~0) .cse24 .cse1) (and .cse53 (<= 24 ULTIMATE.start_main_~x~0) .cse56))) [2021-10-29 06:05:03,887 INFO L731 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1, 1, 1] [2021-10-29 06:05:03,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:05:03,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:05:03 BoogieIcfgContainer [2021-10-29 06:05:03,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:05:03,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:05:03,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:05:03,930 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:05:03,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:02:36" (3/4) ... [2021-10-29 06:05:03,933 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 06:05:03,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 06:05:03,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 06:05:03,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 06:05:03,973 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:05:03,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:05:03,974 INFO L168 Benchmark]: Toolchain (without parser) took 148460.62 ms. Allocated memory was 96.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 72.4 MB in the beginning and 915.0 MB in the end (delta: -842.6 MB). Peak memory consumption was 876.7 MB. Max. memory is 16.1 GB. [2021-10-29 06:05:03,974 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 79.7 MB. Free memory was 48.4 MB in the beginning and 48.4 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:05:03,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.75 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 63.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:05:03,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.48 ms. Allocated memory is still 96.5 MB. Free memory was 63.7 MB in the beginning and 62.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:05:03,974 INFO L168 Benchmark]: Boogie Preprocessor took 15.31 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 61.6 MB in the end (delta: 839.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:05:03,975 INFO L168 Benchmark]: RCFGBuilder took 358.04 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 52.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 06:05:03,975 INFO L168 Benchmark]: TraceAbstraction took 147813.89 ms. Allocated memory was 96.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 52.4 MB in the beginning and 918.0 MB in the end (delta: -865.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. [2021-10-29 06:05:03,975 INFO L168 Benchmark]: Witness Printer took 43.12 ms. Allocated memory is still 1.8 GB. Free memory was 918.0 MB in the beginning and 915.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:05:03,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 79.7 MB. Free memory was 48.4 MB in the beginning and 48.4 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 195.75 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 63.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.48 ms. Allocated memory is still 96.5 MB. Free memory was 63.7 MB in the beginning and 62.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.31 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 61.6 MB in the end (delta: 839.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 358.04 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 52.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 147813.89 ms. Allocated memory was 96.5 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 52.4 MB in the beginning and 918.0 MB in the end (delta: -865.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. * Witness Printer took 43.12 ms. Allocated memory is still 1.8 GB. Free memory was 918.0 MB in the beginning and 915.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 147.6s, OverallIterations: 20, TraceHistogramMax: 205, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.2s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 449 SDtfs, 6921 SDslu, 3608 SDs, 0 SdLazy, 6779 SolverSat, 1385 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14713 GetRequests, 13050 SyntacticMatches, 123 SemanticMatches, 1540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67696 ImplicationChecksByTransitivity, 75.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25113occurred in iteration=17, InterpolantAutomatonStates: 1073, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 62104 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 105 NumberOfFragments, 1046 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1357 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 17358 FormulaSimplificationTreeSizeReductionInter, 5.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 81.9s InterpolantComputationTime, 9688 NumberOfCodeBlocks, 9436 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 14470 ConstructedInterpolants, 0 QuantifiedInterpolants, 35908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7680 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 52 InterpolantComputations, 6 PerfectInterpolantSequences, 359726/725349 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 9 && x <= 51) && 9 <= x) || ((y <= 49 && x <= 53) && 51 <= x)) || ((32 <= x && x <= 51) && y <= 32)) || ((y <= 2 && 51 <= x) && x <= 100)) || ((y <= 21 && x <= 81) && 51 <= x)) || ((30 <= x && y <= 30) && x <= 35)) || ((x <= 83 && 51 <= x) && y <= 19)) || ((y <= 31 && x <= 71) && 51 <= x)) || ((y <= 18 && 51 <= x) && x <= 84)) || ((x <= 80 && y <= 22) && 51 <= x)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((21 <= x && y <= 21) && x <= 51)) || ((x <= 82 && y <= 20) && 51 <= x)) || ((y <= 6 && x <= 96) && 51 <= x)) || ((31 <= x && y <= 31) && x <= 51)) || ((y <= 30 && x <= 72) && 51 <= x)) || ((y <= 7 && x <= 51) && 7 <= x)) || ((y <= 37 && 37 <= x) && x <= 51)) || ((y <= 15 && 15 <= x) && x <= 44)) || ((y <= 25 && 51 <= x) && x <= 77)) || ((y <= 46 && 46 <= x) && x <= 51)) || ((y <= 0 && 51 <= x) && x <= 102)) || ((25 <= x && y <= 25) && x <= 25)) || ((41 <= x && y <= 41) && x <= 51)) || ((x <= 55 && y <= 47) && 51 <= x)) || ((y <= 35 && 35 <= x) && x <= 35)) || ((x <= 92 && 51 <= x) && y <= 10)) || ((20 <= x && y <= 20) && x <= 51)) || ((x <= 93 && y <= 9) && 51 <= x)) || ((39 <= x && y <= 39) && x <= 44)) || ((51 <= x && x <= 76) && y <= 26)) || ((y <= 34 && 34 <= x) && x <= 34)) || ((y <= 15 && x <= 87) && 51 <= x)) || ((y <= 43 && x <= 51) && 43 <= x)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((4 <= x && y <= 4) && x <= 51)) || ((y <= 42 && x <= 51) && 42 <= x)) || ((y <= 36 && x <= 51) && 36 <= x)) || ((8 <= x && x <= 51) && y <= 8)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 42 && x <= 60) && 51 <= x)) || ((y <= 16 && 51 <= x) && x <= 86)) || ((y <= 40 && x <= 40) && 40 <= x)) || ((y <= 33 && x <= 69) && 51 <= x)) || ((y <= 46 && x <= 56) && 51 <= x)) || ((y <= 34 && 51 <= x) && x <= 68)) || ((y <= 4 && x <= 98) && 51 <= x)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((18 <= x && y <= 18) && x <= 51)) || ((y <= 14 && x <= 51) && 14 <= x)) || ((y <= 43 && x <= 59) && 51 <= x)) || ((x <= 66 && y <= 36) && 51 <= x)) || ((y + 1 <= 0 && x <= 103) && 51 <= x)) || ((x <= 99 && y <= 3) && 51 <= x)) || ((y <= 44 && 44 <= x) && x <= 44)) || ((28 <= x && x <= 51) && y <= 28)) || ((x <= 101 && 51 <= x) && y <= 1)) || ((y <= 45 && 45 <= x) && x <= 51)) || ((10 <= x && x <= 10) && y <= 10)) || ((y <= 22 && 22 <= x) && x <= 22)) || ((51 <= x && x <= 54) && y <= 48)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((23 <= x && y <= 23) && x <= 51)) || ((11 <= x && x <= 40) && y <= 11)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 7 && 51 <= x) && x <= 95)) || ((y <= 12 && x <= 51) && 12 <= x)) || ((y <= 27 && 27 <= x) && x <= 27)) || (((x <= 0 && y <= 0) && 0 <= y) && 0 <= x)) || ((26 <= x && x <= 51) && y <= 26)) || ((x <= 51 && 51 <= x) && y <= 51)) || ((y <= 14 && x <= 88) && 51 <= x)) || ((y <= 17 && 17 <= x) && x <= 17)) || ((x <= 70 && 51 <= x) && y <= 32)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((y <= 37 && x <= 65) && 51 <= x)) || ((y <= 33 && 33 <= x) && x <= 51)) || ((y <= 27 && 51 <= x) && x <= 75)) || ((38 <= x && x <= 51) && y <= 38)) || ((y <= 44 && 51 <= x) && x <= 58)) || ((y <= 5 && x <= 97) && 51 <= x)) || ((x <= 91 && 51 <= x) && y <= 11)) || ((48 <= x && x <= 51) && y <= 48)) || ((x <= 74 && 51 <= x) && y <= 28)) || ((19 <= x && x <= 51) && y <= 19)) || ((y <= 12 && x <= 90) && 51 <= x)) || ((y <= 6 && 6 <= x) && x <= 6)) || ((y <= 13 && 51 <= x) && x <= 89)) || ((y <= 24 && x <= 78) && 51 <= x)) || ((2 <= x && y <= 2) && x <= 2)) || ((x <= 94 && 51 <= x) && y <= 8)) || ((y <= 41 && x <= 61) && 51 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((x <= 51 && y <= 50) && 50 <= x)) || ((y <= 17 && x <= 85) && 51 <= x)) || ((y <= 29 && 29 <= x) && x <= 29)) || ((5 <= x && y <= 5) && x <= 51)) || ((y <= 49 && 49 <= x) && x <= 51)) || ((x <= 73 && y <= 29) && 51 <= x)) || ((y <= 23 && 51 <= x) && x <= 79)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((y <= 16 && 16 <= x) && x <= 51)) || ((47 <= x && y <= 47) && x <= 51)) || ((y <= 24 && 24 <= x) && x <= 29) RESULT: Ultimate proved your program to be correct! [2021-10-29 06:05:04,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b6da8e-0f4b-4a95-8322-b363f14e8feb/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...