./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:53:19,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:53:19,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:53:19,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:53:19,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:53:19,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:53:19,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:53:19,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:53:19,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:53:19,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:53:19,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:53:19,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:53:19,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:53:19,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:53:19,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:53:19,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:53:19,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:53:19,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:53:19,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:53:19,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:53:19,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:53:19,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:53:19,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:53:19,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:53:19,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:53:19,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:53:19,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:53:19,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:53:19,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:53:19,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:53:19,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:53:19,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:53:19,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:53:19,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:53:19,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:53:19,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:53:19,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:53:19,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:53:19,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:53:19,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:53:19,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:53:19,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-03 04:53:19,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:53:19,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:53:19,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:53:19,306 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:53:19,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:53:19,306 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:53:19,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:53:19,307 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:53:19,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:53:19,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:53:19,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:53:19,309 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:53:19,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:53:19,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:53:19,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:53:19,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:53:19,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:53:19,311 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:53:19,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:53:19,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:53:19,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:53:19,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:53:19,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:53:19,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:53:19,313 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:53:19,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:53:19,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:53:19,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:53:19,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:53:19,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:53:19,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:53:19,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:53:19,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:53:19,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:53:19,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:53:19,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:53:19,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:53:19,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:53:19,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:53:19,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:53:19,318 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_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 [2021-11-03 04:53:19,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:53:19,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:53:19,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:53:19,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:53:19,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:53:19,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-11-03 04:53:19,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/data/afeafc0a4/48feca0b34a04370925291b669421ce8/FLAGe42d99dc7 [2021-11-03 04:53:20,132 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:53:20,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-11-03 04:53:20,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/data/afeafc0a4/48feca0b34a04370925291b669421ce8/FLAGe42d99dc7 [2021-11-03 04:53:20,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/data/afeafc0a4/48feca0b34a04370925291b669421ce8 [2021-11-03 04:53:20,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:53:20,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:53:20,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:53:20,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:53:20,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:53:20,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf6aa4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20, skipping insertion in model container [2021-11-03 04:53:20,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:53:20,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:53:20,781 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-11-03 04:53:20,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:53:20,802 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:53:20,814 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-11-03 04:53:20,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:53:20,834 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:53:20,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20 WrapperNode [2021-11-03 04:53:20,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:53:20,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:53:20,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:53:20,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:53:20,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:53:20,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:53:20,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:53:20,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:53:20,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:53:20,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:53:20,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:53:20,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:53:20,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (1/1) ... [2021-11-03 04:53:20,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:53:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:53:20,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:53:20,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:53:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:53:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:53:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:53:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:53:21,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:53:21,265 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:53:21,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:53:21 BoogieIcfgContainer [2021-11-03 04:53:21,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:53:21,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:53:21,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:53:21,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:53:21,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:53:20" (1/3) ... [2021-11-03 04:53:21,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220144d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:53:21, skipping insertion in model container [2021-11-03 04:53:21,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:53:20" (2/3) ... [2021-11-03 04:53:21,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220144d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:53:21, skipping insertion in model container [2021-11-03 04:53:21,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:53:21" (3/3) ... [2021-11-03 04:53:21,275 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark22_conjunctive.i [2021-11-03 04:53:21,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:53:21,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:53:21,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:53:21,328 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:53:21,329 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:53:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:53:21,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:21,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:53:21,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-03 04:53:21,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:21,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847315403] [2021-11-03 04:53:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:21,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:21,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:21,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847315403] [2021-11-03 04:53:21,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847315403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:21,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:21,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:53:21,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108129560] [2021-11-03 04:53:21,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:53:21,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:53:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:53:21,526 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:21,577 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-03 04:53:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:53:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-03 04:53:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:21,586 INFO L225 Difference]: With dead ends: 19 [2021-11-03 04:53:21,587 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 04:53:21,589 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 [2021-11-03 04:53:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 04:53:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-03 04:53:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-03 04:53:21,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-03 04:53:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:21,633 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-03 04:53:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-03 04:53:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:53:21,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:21,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:53:21,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:53:21,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-03 04:53:21,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:21,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033753868] [2021-11-03 04:53:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:21,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:21,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033753868] [2021-11-03 04:53:21,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033753868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:21,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:21,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:53:21,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832109894] [2021-11-03 04:53:21,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:53:21,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:53:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:53:21,714 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:21,736 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-03 04:53:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:53:21,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 04:53:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:21,738 INFO L225 Difference]: With dead ends: 15 [2021-11-03 04:53:21,738 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 04:53:21,739 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 [2021-11-03 04:53:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 04:53:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 04:53:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-03 04:53:21,745 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-03 04:53:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:21,745 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-03 04:53:21,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-03 04:53:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:53:21,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:21,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:53:21,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:53:21,747 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-03 04:53:21,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:21,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688821917] [2021-11-03 04:53:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:21,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:21,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:21,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688821917] [2021-11-03 04:53:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688821917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:21,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:21,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:53:21,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186984452] [2021-11-03 04:53:21,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:53:21,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:21,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:53:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:53:21,832 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:21,874 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-03 04:53:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:21,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:53:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:21,876 INFO L225 Difference]: With dead ends: 18 [2021-11-03 04:53:21,876 INFO L226 Difference]: Without dead ends: 17 [2021-11-03 04:53:21,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-03 04:53:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-03 04:53:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-03 04:53:21,880 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-11-03 04:53:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:21,880 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-03 04:53:21,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-03 04:53:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:53:21,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:21,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:21,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:53:21,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:21,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-03 04:53:21,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:21,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326376949] [2021-11-03 04:53:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:21,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:21,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:21,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326376949] [2021-11-03 04:53:21,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326376949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:21,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:21,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:53:21,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600009787] [2021-11-03 04:53:21,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:53:21,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:21,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:53:21,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:53:21,942 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:21,984 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-03 04:53:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:53:21,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:53:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:21,985 INFO L225 Difference]: With dead ends: 15 [2021-11-03 04:53:21,985 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 04:53:21,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 04:53:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 04:53:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-03 04:53:21,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-03 04:53:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:21,989 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-03 04:53:21,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-03 04:53:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:53:21,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:21,990 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:21,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:53:21,991 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-03 04:53:21,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:21,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660551965] [2021-11-03 04:53:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:21,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:22,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:22,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660551965] [2021-11-03 04:53:22,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660551965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:53:22,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683513272] [2021-11-03 04:53:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:22,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:53:22,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:53:22,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:53:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:22,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:53:22,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:22,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:22,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683513272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:53:22,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893293642] [2021-11-03 04:53:22,469 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:53:22,469 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:53:22,473 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:53:22,478 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:53:22,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:53:22,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,525 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:53:22,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:53:22,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:53:22,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:53:22,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:53:22,566 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-03 04:53:22,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:22,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:53:22,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:53:22,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:53:22,602 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:53:22,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:22,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:22,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:22,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:53:22,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:53:22,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:53:22,640 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:53:22,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:22,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 04:53:22,657 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:53:22,657 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 04:53:22,666 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.0 percent of original size [2021-11-03 04:53:22,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:53:22,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,696 INFO L185 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size 82 [2021-11-03 04:53:22,704 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:53:22,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-03 04:53:22,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-03 04:53:22,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:22,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:22,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:22,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-03 04:53:22,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:53:22,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:22,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:53:22,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,034 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:53:23,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:53:23,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:23,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:23,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:23,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:23,059 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:53:23,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:53:23,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:23,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:23,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:23,127 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:53:23,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:53:23,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:53:23,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-11-03 04:53:23,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848560586] [2021-11-03 04:53:23,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:53:23,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:53:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:53:23,840 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:23,944 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-03 04:53:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:53:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:53:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:23,945 INFO L225 Difference]: With dead ends: 25 [2021-11-03 04:53:23,945 INFO L226 Difference]: Without dead ends: 24 [2021-11-03 04:53:23,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:53:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-03 04:53:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-03 04:53:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-03 04:53:23,954 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2021-11-03 04:53:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-03 04:53:23,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-03 04:53:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:53:23,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:23,955 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:23,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:24,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:24,158 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:24,159 INFO L85 PathProgramCache]: Analyzing trace with hash 865667262, now seen corresponding path program 1 times [2021-11-03 04:53:24,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:24,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945240761] [2021-11-03 04:53:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:24,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:24,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945240761] [2021-11-03 04:53:24,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945240761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:53:24,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836300286] [2021-11-03 04:53:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:24,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:24,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:53:24,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:53:24,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:53:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:24,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:53:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836300286] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 04:53:24,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:53:24,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2021-11-03 04:53:24,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75836477] [2021-11-03 04:53:24,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:24,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:24,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:53:24,460 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:24,497 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-03 04:53:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:53:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:53:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:24,500 INFO L225 Difference]: With dead ends: 22 [2021-11-03 04:53:24,500 INFO L226 Difference]: Without dead ends: 21 [2021-11-03 04:53:24,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:53:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-03 04:53:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-03 04:53:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 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) [2021-11-03 04:53:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-03 04:53:24,507 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2021-11-03 04:53:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:24,508 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-03 04:53:24,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-03 04:53:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:53:24,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:24,515 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-03 04:53:24,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:24,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-03 04:53:24,739 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2021-11-03 04:53:24,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:24,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497287722] [2021-11-03 04:53:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:24,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497287722] [2021-11-03 04:53:24,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497287722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:53:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089381747] [2021-11-03 04:53:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:24,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:53:24,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:53:24,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:53:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:24,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:53:24,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089381747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:53:24,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1011977812] [2021-11-03 04:53:24,987 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:53:24,987 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:53:24,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:53:24,988 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:53:24,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:53:25,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:53:25,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:53:25,004 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:53:25,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:53:25,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:53:25,013 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-11-03 04:53:25,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:25,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:53:25,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:53:25,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:53:25,026 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:53:25,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:25,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:25,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:53:25,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:53:25,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:53:25,050 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:53:25,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,055 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 04:53:25,059 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:53:25,059 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 04:53:25,066 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.0 percent of original size [2021-11-03 04:53:25,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:53:25,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 04:53:25,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,085 INFO L185 QuantifierPusher]: treesize reduction 14, result has 85.9 percent of original size 85 [2021-11-03 04:53:25,088 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.8 percent of original size [2021-11-03 04:53:25,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 04:53:25,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-03 04:53:25,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:53:25,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:53:25,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,226 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:53:25,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:53:25,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:25,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:25,246 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:53:25,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:53:25,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:25,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:25,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:25,287 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:53:25,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1011977812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:25,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:53:25,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 14 [2021-11-03 04:53:25,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115397719] [2021-11-03 04:53:25,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:53:25,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:53:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:53:25,789 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:26,265 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-03 04:53:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:53:26,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:53:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:26,266 INFO L225 Difference]: With dead ends: 21 [2021-11-03 04:53:26,267 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 04:53:26,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:53:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 04:53:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-03 04:53:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-03 04:53:26,270 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2021-11-03 04:53:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:26,271 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-03 04:53:26,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-03 04:53:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 04:53:26,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:26,272 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1] [2021-11-03 04:53:26,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:26,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:26,494 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:26,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:26,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1075330740, now seen corresponding path program 2 times [2021-11-03 04:53:26,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:26,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450145511] [2021-11-03 04:53:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:26,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:26,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:26,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450145511] [2021-11-03 04:53:26,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450145511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:53:26,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210515652] [2021-11-03 04:53:26,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:53:26,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:26,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:53:26,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:53:26,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:53:26,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-03 04:53:26,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:53:26,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:53:26,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:26,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:27,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210515652] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:53:27,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359133818] [2021-11-03 04:53:27,143 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:53:27,143 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:53:27,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:53:27,143 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:53:27,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:53:27,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,149 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:53:27,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:53:27,150 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:53:27,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:53:27,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:53:27,155 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-11-03 04:53:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:27,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:53:27,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:53:27,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:53:27,171 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:53:27,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,176 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:27,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:27,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:27,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:53:27,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:53:27,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:53:27,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:53:27,196 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:53:27,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,201 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 04:53:27,204 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:53:27,205 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 04:53:27,209 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.0 percent of original size [2021-11-03 04:53:27,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:53:27,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,218 INFO L185 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size 82 [2021-11-03 04:53:27,224 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-11-03 04:53:27,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:53:27,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:53:27,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 04:53:27,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-11-03 04:53:27,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-11-03 04:53:27,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,350 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:53:27,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:53:27,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:27,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:27,363 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:53:27,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:53:27,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:53:27,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:53:27,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:53:27,396 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:53:28,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:53:28,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:53:28,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-11-03 04:53:28,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081455137] [2021-11-03 04:53:28,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-03 04:53:28,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:53:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-03 04:53:28,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2021-11-03 04:53:28,118 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:28,374 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-11-03 04:53:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:53:28,375 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 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 19 [2021-11-03 04:53:28,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:28,376 INFO L225 Difference]: With dead ends: 41 [2021-11-03 04:53:28,376 INFO L226 Difference]: Without dead ends: 40 [2021-11-03 04:53:28,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 04:53:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-03 04:53:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-03 04:53:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-03 04:53:28,383 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 19 [2021-11-03 04:53:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:28,384 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-03 04:53:28,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-03 04:53:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:53:28,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:28,385 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1] [2021-11-03 04:53:28,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:28,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-03 04:53:28,598 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:53:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash 237862964, now seen corresponding path program 3 times [2021-11-03 04:53:28,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:53:28,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259749045] [2021-11-03 04:53:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:28,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:53:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:28,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:53:28,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259749045] [2021-11-03 04:53:28,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259749045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:53:28,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345981072] [2021-11-03 04:53:28,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:53:28,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:53:28,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:53:28,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:53:28,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:53:28,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:53:28,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:53:28,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:53:28,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:29,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:17,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345981072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:54:17,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [120357147] [2021-11-03 04:54:17,730 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:54:17,731 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:54:17,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:54:17,731 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:54:17,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:54:17,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,736 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:54:17,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:54:17,738 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:54:17,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 04:54:17,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:54:17,742 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-11-03 04:54:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:54:17,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 04:54:17,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:54:17,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:54:17,750 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:54:17,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:54:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:54:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:54:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:54:17,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 04:54:17,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:54:17,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:54:17,766 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:54:17,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-03 04:54:17,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:54:17,772 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-11-03 04:54:17,777 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.0 percent of original size [2021-11-03 04:54:17,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:54:17,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 04:54:17,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 04:54:17,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 04:54:17,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-03 04:54:17,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-11-03 04:54:17,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-11-03 04:54:17,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,889 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:54:17,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:54:17,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:54:17,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:54:17,901 INFO L180 QuantifierPusher]: treesize reduction 24, result has 66.7 percent of original size [2021-11-03 04:54:17,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:54:17,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:54:17,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 04:54:17,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:54:17,932 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:54:19,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:54:19,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:54:19,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-11-03 04:54:19,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554079394] [2021-11-03 04:54:19,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-03 04:54:19,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:54:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-03 04:54:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=2389, Unknown=18, NotChecked=0, Total=2756 [2021-11-03 04:54:19,155 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 47 states, 46 states have (on average 2.5) internal successors, (115), 47 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) [2021-11-03 04:54:21,480 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse10 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse9 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse12 (+ (div (+ .cse10 2147483639) 2) 1)) (.cse11 (* 2 c_ULTIMATE.start_main_~y~0)) (.cse21 (* c_ULTIMATE.start_main_~y~0 (- 1)))) (and (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (aux_div_v_ULTIMATE.start_main_~x~0_56_66 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse0 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse4 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse5 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse7 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse1 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse2 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357)) (.cse3 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_56_66)) (.cse6 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109)) (.cse8 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse0 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= (+ .cse1 c_ULTIMATE.start_main_~x~0 .cse2 (* 2 c_ULTIMATE.start_main_~y~0)) 2147483630) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) (+ 2147483644 .cse3)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= (+ c_ULTIMATE.start_main_~y~0 .cse4 14 .cse5) (+ .cse1 .cse6)) (<= (+ .cse6 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0 .cse7 .cse2) (+ .cse4 .cse5 2147483639)) (<= (+ c_ULTIMATE.start_main_~y~0 1) .cse0) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= 0 (+ .cse0 .cse1 9 .cse2 .cse3)) (<= (+ .cse6 7 .cse7 .cse2 .cse3) (+ .cse4 .cse5)) (<= (+ aux_div_v_ULTIMATE.start_main_~x~0_56_66 c_ULTIMATE.start_main_~y~0 9 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= (+ .cse4 .cse5 4) (+ .cse8 .cse7 .cse2 .cse3)) (<= (+ .cse1 c_ULTIMATE.start_main_~y~0 16 .cse2 .cse3) 0) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse6 5) .cse8)))) (<= .cse9 (div (+ .cse10 2147483646) 2)) (<= .cse11 .cse12) (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse13 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse14 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse16 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109)) (.cse18 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse19 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse20 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247)) (.cse17 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse15 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse13 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= (+ .cse14 |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 .cse15) 2147483630) (<= (+ |c_ULTIMATE.start_main_#t~post6| 9 (div (+ (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483646) (- 2)) |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) .cse13) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= (+ .cse16 c_ULTIMATE.start_main_~x~0 .cse17 .cse15) (+ .cse18 .cse19 2147483639)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse18 14 .cse19) (+ .cse14 .cse16)) (<= 2147483636 (+ .cse13 .cse14 c_ULTIMATE.start_main_~x~0 .cse15)) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse16 5) .cse20) (<= (+ 2147483649 .cse18 .cse19) (+ .cse20 c_ULTIMATE.start_main_~x~0 .cse17 .cse15))))) (<= c_ULTIMATE.start_main_~y~0 (div (+ .cse10 .cse21 2147483644) 2)) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58 Int)) (or (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58) 1) (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58) (<= (div (+ (* aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58 5) c_ULTIMATE.start_main_~x~0 (- 2147483637)) (- 2)) 0))) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0) 2147483646) (<= .cse9 (div .cse12 2)) (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (aux_div_v_ULTIMATE.start_main_~x~0_56_66 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_v_ULTIMATE.start_main_~x~0_57_138 Int)) (let ((.cse29 (* 2 c_ULTIMATE.start_main_~y~0)) (.cse27 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_57_138)) (.cse22 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse31 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse25 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse26 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse24 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse28 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357)) (.cse30 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_56_66)) (.cse23 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109)) (.cse32 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse22 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= (+ .cse23 c_ULTIMATE.start_main_~y~0 .cse24) (+ .cse25 .cse26 8 .cse27)) (<= (+ .cse23 c_ULTIMATE.start_main_~x~0 .cse24 .cse28 .cse29) (+ 2147483638 .cse25 .cse26)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= c_ULTIMATE.start_main_~y~0 (+ .cse28 .cse30 .cse27 13)) (<= (+ c_ULTIMATE.start_main_~y~0 aux_div_v_ULTIMATE.start_main_~x~0_55_118 1) aux_div_v_ULTIMATE.start_main_~x~0_57_138) (<= (+ c_ULTIMATE.start_main_~x~0 .cse29) (+ 2147483643 .cse30)) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= (+ c_ULTIMATE.start_main_~y~0 2) .cse22) (<= (+ c_ULTIMATE.start_main_~y~0 .cse25 15 .cse26) (+ .cse31 .cse23)) (<= (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0 .cse28 .cse27) 2147483628) (<= 0 (+ .cse22 .cse31 9 .cse28 .cse30)) (<= (+ .cse23 7 .cse24 .cse28 .cse30) (+ .cse25 .cse26)) (<= (+ .cse31 c_ULTIMATE.start_main_~y~0 .cse28 .cse30 17) 0) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= (+ .cse25 .cse26 4) (+ .cse32 .cse24 .cse28 .cse30)) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse23 5) .cse32) (<= (+ aux_div_v_ULTIMATE.start_main_~x~0_56_66 c_ULTIMATE.start_main_~y~0 10 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0)))) (<= (+ c_ULTIMATE.start_main_~x~0 .cse11) 2147483646) (<= c_ULTIMATE.start_main_~y~0 (div (+ (div (+ .cse10 .cse21 2147483639) 2) (- 1)) 2)) (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (aux_div_v_ULTIMATE.start_main_~x~0_56_66 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse33 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse38 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse36 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357)) (.cse34 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_56_66)) (.cse41 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247)) (.cse39 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse40 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse35 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse37 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse33 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_div_v_ULTIMATE.start_main_~x~0_55_118 1) (div (+ (* c_ULTIMATE.start_main_~x~0 (- 1)) (* aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 (- 5)) 2147483630) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 2) .cse33) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0) (+ 2147483643 .cse34)) (<= 0 (+ .cse33 .cse35 9 .cse36 .cse34)) (<= (+ .cse37 7 .cse38 .cse36 .cse34) (+ .cse39 .cse40)) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= (+ .cse37 |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 .cse38 .cse36) (+ 2147483638 .cse39 .cse40)) (<= (+ aux_div_v_ULTIMATE.start_main_~x~0_56_66 |c_ULTIMATE.start_main_#t~post6| 10 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0) (<= (+ .cse39 .cse40 4) (+ .cse41 .cse38 .cse36 .cse34)) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse35 |c_ULTIMATE.start_main_#t~post6| .cse36 .cse34 17) 0) (<= (+ .cse37 5) .cse41) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse39 15 .cse40) (+ .cse35 .cse37))))) (<= (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) 2147483647) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse44 (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2))) (.cse45 (* c_ULTIMATE.start_main_~y~0 (- 1)))) (let ((.cse43 (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (- 4)) (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 2) .cse45 (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (- 2)) (- 8)) (- 5))) (.cse42 (div (+ .cse44 (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4))) (or (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= c_ULTIMATE.start_main_~y~0 .cse42) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= .cse43 (+ (div (+ (* c_ULTIMATE.start_main_~x~0 (- 1)) .cse44 .cse45 2147483636) 5) 1)) (<= .cse43 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= .cse43 (+ .cse42 1)) (<= (+ c_ULTIMATE.start_main_~x~0 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (* 2 c_ULTIMATE.start_main_~y~0)) 2147483630) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0))))) (<= |c_ULTIMATE.start_main_#t~post6| (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) .cse10 2147483641) 2))))) is different from false [2021-11-03 04:54:23,500 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse1 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (and (<= .cse0 (div (+ .cse1 2147483646) 2)) (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse2 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse3 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse5 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109)) (.cse7 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse8 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse9 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247)) (.cse6 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse4 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse2 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= (+ .cse3 |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 .cse4) 2147483630) (<= (+ |c_ULTIMATE.start_main_#t~post6| 9 (div (+ (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483646) (- 2)) |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) .cse2) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= (+ .cse5 c_ULTIMATE.start_main_~x~0 .cse6 .cse4) (+ .cse7 .cse8 2147483639)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse7 14 .cse8) (+ .cse3 .cse5)) (<= 2147483636 (+ .cse2 .cse3 c_ULTIMATE.start_main_~x~0 .cse4)) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse5 5) .cse9) (<= (+ 2147483649 .cse7 .cse8) (+ .cse9 c_ULTIMATE.start_main_~x~0 .cse6 .cse4))))) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58 Int)) (or (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58) 1) (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58) (<= (div (+ (* aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58 5) c_ULTIMATE.start_main_~x~0 (- 2147483637)) (- 2)) 0))) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0) 2147483646) (<= .cse0 (div (+ (div (+ .cse1 2147483639) 2) 1) 2)) (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (aux_div_v_ULTIMATE.start_main_~x~0_56_66 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse10 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse15 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse13 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357)) (.cse11 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_56_66)) (.cse18 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247)) (.cse16 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse17 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse12 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse14 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse10 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_div_v_ULTIMATE.start_main_~x~0_55_118 1) (div (+ (* c_ULTIMATE.start_main_~x~0 (- 1)) (* aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 (- 5)) 2147483630) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 2) .cse10) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0) (+ 2147483643 .cse11)) (<= 0 (+ .cse10 .cse12 9 .cse13 .cse11)) (<= (+ .cse14 7 .cse15 .cse13 .cse11) (+ .cse16 .cse17)) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= (+ .cse14 |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 .cse15 .cse13) (+ 2147483638 .cse16 .cse17)) (<= (+ aux_div_v_ULTIMATE.start_main_~x~0_56_66 |c_ULTIMATE.start_main_#t~post6| 10 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0) (<= (+ .cse16 .cse17 4) (+ .cse18 .cse15 .cse13 .cse11)) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse12 |c_ULTIMATE.start_main_#t~post6| .cse13 .cse11 17) 0) (<= (+ .cse14 5) .cse18) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse16 15 .cse17) (+ .cse12 .cse14))))) (<= |c_ULTIMATE.start_main_#t~post6| (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) .cse1 2147483641) 2)))) is different from false [2021-11-03 04:54:33,859 WARN L207 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2021-11-03 04:54:44,754 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse3 (+ (div (+ .cse1 2147483639) 2) 1)) (.cse2 (* 2 c_ULTIMATE.start_main_~y~0))) (and (<= .cse0 (div (+ .cse1 2147483646) 2)) (<= .cse2 .cse3) (forall ((aux_div_v_ULTIMATE.start_main_~x~0_55_118 Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 Int) (aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 Int) (aux_div_v_ULTIMATE.start_main_~y~0_43_247 Int) (|aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| Int)) (let ((.cse4 (div (+ (* aux_div_v_ULTIMATE.start_main_~x~0_55_118 (- 2)) (* |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 4) (* |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 2) 4) 4)) (.cse5 (* 2 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse7 (* 5 aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109)) (.cse9 (* 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse10 (* 4 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) (.cse11 (* 5 aux_div_v_ULTIMATE.start_main_~y~0_43_247)) (.cse8 (* 4 aux_div_v_ULTIMATE.start_main_~x~0_55_118)) (.cse6 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357))) (or (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ .cse4 1)) (<= 2 |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|) (<= aux_div_v_ULTIMATE.start_main_~y~0_43_247 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109_357 1)) (<= aux_div_v_ULTIMATE.start_main_~x~0_55_118 0) (<= (+ .cse5 |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0 .cse6) 2147483630) (<= (+ |c_ULTIMATE.start_main_#t~post6| 9 (div (+ (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483646) (- 2)) |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65|)) 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) .cse4) (<= (+ aux_div_v_ULTIMATE.start_main_~y~0_43_247 1) aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109) (<= (+ .cse7 c_ULTIMATE.start_main_~x~0 .cse8 .cse6) (+ .cse9 .cse10 2147483639)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse9 14 .cse10) (+ .cse5 .cse7)) (<= 2147483636 (+ .cse4 .cse5 c_ULTIMATE.start_main_~x~0 .cse6)) (< |aux_mod_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 0) (<= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0_43_247_109 (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post6_57_108_65| 1)) (<= (+ .cse7 5) .cse11) (<= (+ 2147483649 .cse9 .cse10) (+ .cse11 c_ULTIMATE.start_main_~x~0 .cse8 .cse6))))) (<= c_ULTIMATE.start_main_~y~0 (div (+ .cse1 (* c_ULTIMATE.start_main_~y~0 (- 1)) 2147483644) 2)) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58 Int)) (or (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58) 1) (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) (* c_ULTIMATE.start_main_~x~0 (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58) (<= (div (+ (* aux_div_aux_div_v_ULTIMATE.start_main_~y~0_42_97_58 5) c_ULTIMATE.start_main_~x~0 (- 2147483637)) (- 2)) 0))) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~x~0) 2147483646) (<= .cse0 (div .cse3 2)) (<= (+ c_ULTIMATE.start_main_~x~0 .cse2) 2147483646) (<= (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) 2147483647) (<= |c_ULTIMATE.start_main_#t~post6| (div (+ (* |c_ULTIMATE.start_main_#t~post6| (- 1)) .cse1 2147483641) 2))))) is different from false [2021-11-03 04:55:30,181 WARN L207 SmtUtils]: Spent 19.15 s on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2021-11-03 04:56:38,800 WARN L207 SmtUtils]: Spent 8.59 s on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-11-03 04:56:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:54,201 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-03 04:56:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-03 04:56:54,203 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5) internal successors, (115), 47 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) Word has length 39 [2021-11-03 04:56:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:54,204 INFO L225 Difference]: With dead ends: 81 [2021-11-03 04:56:54,204 INFO L226 Difference]: Without dead ends: 80 [2021-11-03 04:56:54,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 169.9s TimeCoverageRelationStatistics Valid=868, Invalid=4207, Unknown=49, NotChecked=426, Total=5550 [2021-11-03 04:56:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-03 04:56:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-03 04:56:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 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) [2021-11-03 04:56:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-11-03 04:56:54,219 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 39 [2021-11-03 04:56:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:54,220 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-11-03 04:56:54,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5) internal successors, (115), 47 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) [2021-11-03 04:56:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-11-03 04:56:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:56:54,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:54,222 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1] [2021-11-03 04:56:54,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:54,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-03 04:56:54,424 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:56:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1923662644, now seen corresponding path program 4 times [2021-11-03 04:56:54,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:56:54,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838307543] [2021-11-03 04:56:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:54,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:56:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:55,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:56:55,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838307543] [2021-11-03 04:56:55,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838307543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:56:55,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495233477] [2021-11-03 04:56:55,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 04:56:55,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:56:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:56:55,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:56:55,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91c9258e-552b-407a-87d6-569109e1d45e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 04:56:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 04:56:55,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:57,067 INFO L328 TraceCheckSpWp]: Computing backward predicates...