./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_monotonic.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_monotonic.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5e947ce3cb6be538c3110154d89a790a98803ec545aa8464d99fb543118ea442 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:45:21,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:45:21,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:45:21,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:45:21,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:45:21,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:45:21,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:45:21,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:45:21,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:45:21,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:45:21,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:45:21,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:45:21,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:45:21,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:45:21,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:45:21,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:45:21,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:45:21,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:45:21,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:45:21,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:45:21,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:45:21,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:45:21,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:45:21,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:45:21,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:45:21,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:45:21,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:45:21,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:45:21,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:45:21,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:45:21,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:45:21,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:45:21,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:45:21,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:45:21,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:45:21,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:45:21,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:45:21,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:45:21,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:45:21,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:45:21,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:45:21,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:45:21,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:45:21,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:45:21,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:45:21,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:45:21,240 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:45:21,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:45:21,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:45:21,241 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:45:21,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:45:21,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:45:21,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:45:21,241 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:45:21,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:45:21,242 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:45:21,242 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:45:21,242 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:45:21,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:45:21,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:45:21,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:45:21,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:45:21,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:45:21,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:45:21,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:45:21,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:45:21,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:45:21,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:45:21,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:45:21,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:45:21,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:45:21,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:45:21,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:45:21,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:45:21,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:45:21,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:45:21,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:45:21,254 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:45:21,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:45:21,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:45:21,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:45:21,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:45:21,256 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_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e947ce3cb6be538c3110154d89a790a98803ec545aa8464d99fb543118ea442 [2021-11-19 15:45:21,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:45:21,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:45:21,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:45:21,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:45:21,582 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:45:21,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/array-industry-pattern/array_monotonic.i [2021-11-19 15:45:21,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/data/a9351f6eb/f5ad5ba3013844cdbf6353477eb738c4/FLAGdd250db57 [2021-11-19 15:45:22,111 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:45:22,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/sv-benchmarks/c/array-industry-pattern/array_monotonic.i [2021-11-19 15:45:22,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/data/a9351f6eb/f5ad5ba3013844cdbf6353477eb738c4/FLAGdd250db57 [2021-11-19 15:45:22,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/data/a9351f6eb/f5ad5ba3013844cdbf6353477eb738c4 [2021-11-19 15:45:22,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:45:22,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:45:22,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:22,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:45:22,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:45:22,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:22,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620b8580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22, skipping insertion in model container [2021-11-19 15:45:22,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:22,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:45:22,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:45:22,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/sv-benchmarks/c/array-industry-pattern/array_monotonic.i[808,821] [2021-11-19 15:45:22,918 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:22,933 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:45:22,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/sv-benchmarks/c/array-industry-pattern/array_monotonic.i[808,821] [2021-11-19 15:45:22,960 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:22,977 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:45:22,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22 WrapperNode [2021-11-19 15:45:22,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:22,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:45:22,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:45:22,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:45:22,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:22,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,018 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2021-11-19 15:45:23,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:45:23,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:45:23,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:45:23,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:45:23,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:45:23,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:45:23,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:45:23,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:45:23,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (1/1) ... [2021-11-19 15:45:23,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:45:23,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:23,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:45:23,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:45:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:45:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:45:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:45:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 15:45:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:45:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:45:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 15:45:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:45:23,227 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:45:23,229 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:45:23,389 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:45:23,449 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:45:23,449 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 15:45:23,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:45:23 BoogieIcfgContainer [2021-11-19 15:45:23,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:45:23,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:45:23,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:45:23,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:45:23,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:45:22" (1/3) ... [2021-11-19 15:45:23,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cd3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:45:23, skipping insertion in model container [2021-11-19 15:45:23,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:22" (2/3) ... [2021-11-19 15:45:23,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cd3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:45:23, skipping insertion in model container [2021-11-19 15:45:23,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:45:23" (3/3) ... [2021-11-19 15:45:23,465 INFO L111 eAbstractionObserver]: Analyzing ICFG array_monotonic.i [2021-11-19 15:45:23,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:45:23,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:45:23,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:45:23,546 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:45:23,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:45:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 15:45:23,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:23,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 15:45:23,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1778400279, now seen corresponding path program 1 times [2021-11-19 15:45:23,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:45:23,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913007193] [2021-11-19 15:45:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:23,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:45:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:23,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:45:23,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913007193] [2021-11-19 15:45:23,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913007193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:45:23,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:45:23,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 15:45:23,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125436155] [2021-11-19 15:45:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:45:23,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:45:23,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:45:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:45:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:45:23,794 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:23,837 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2021-11-19 15:45:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:45:23,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 15:45:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:23,848 INFO L225 Difference]: With dead ends: 26 [2021-11-19 15:45:23,849 INFO L226 Difference]: Without dead ends: 17 [2021-11-19 15:45:23,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:45:23,855 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:23,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:45:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-19 15:45:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2021-11-19 15:45:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-19 15:45:23,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2021-11-19 15:45:23,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:23,898 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-19 15:45:23,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-19 15:45:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 15:45:23,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:23,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:45:23,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 15:45:23,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:23,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 816743480, now seen corresponding path program 1 times [2021-11-19 15:45:23,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:45:23,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812949871] [2021-11-19 15:45:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:23,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:45:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:23,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:45:23,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812949871] [2021-11-19 15:45:23,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812949871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:45:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007053671] [2021-11-19 15:45:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:23,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:45:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:23,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:45:23,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 15:45:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:24,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:45:24,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:24,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:24,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007053671] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:24,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [244825576] [2021-11-19 15:45:24,136 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-19 15:45:24,136 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:45:24,141 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:45:24,147 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:45:24,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:45:24,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-19 15:45:24,192 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-19 15:45:24,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-19 15:45:24,221 INFO L446 ElimStorePlain]: Different costs {4=[|v_#length_9|], 18=[|v_#valid_24|]} [2021-11-19 15:45:24,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 15:45:24,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:24,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:24,284 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,346 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-19 15:45:24,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-11-19 15:45:24,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:24,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:24,368 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 15:45:24,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,420 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:103, output treesize:96 [2021-11-19 15:45:24,430 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-11-19 15:45:24,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:24,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:45:24,457 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-19 15:45:24,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-19 15:45:24,462 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:24,472 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 15:45:24,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 15:45:24,476 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 15:45:24,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-19 15:45:24,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,488 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:24,492 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,494 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 15:45:24,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 15:45:24,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:24,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:24,504 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 15:45:24,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-19 15:45:24,509 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 15:45:24,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-19 15:45:24,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-19 15:45:24,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:24,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:24,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:24,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-19 15:45:24,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 15:45:24,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 15:45:24,601 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,653 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-11-19 15:45:24,677 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:24,677 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:267, output treesize:260 [2021-11-19 15:45:24,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,781 INFO L180 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size [2021-11-19 15:45:24,793 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:24,800 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:24,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-19 15:45:24,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,827 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:24,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:45:24,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,844 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:24,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:24,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:24,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-19 15:45:24,854 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,857 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:24,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:24,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:24,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-19 15:45:24,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 15:45:24,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:45:24,918 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-19 15:45:24,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-19 15:45:24,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:24,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:24,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:45:24,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:24,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:24,949 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:24,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:24,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:24,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 15:45:24,968 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:24,968 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:127, output treesize:124 [2021-11-19 15:45:24,978 INFO L180 QuantifierPusher]: treesize reduction 28, result has 50.9 percent of original size [2021-11-19 15:45:24,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 15:45:24,996 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-11-19 15:45:24,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 15:45:25,005 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:45:25,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:45:25,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:45:25,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-19 15:45:25,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205120819] [2021-11-19 15:45:25,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:45:25,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:45:25,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:45:25,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:45:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:45:25,270 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:25,334 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-11-19 15:45:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:45:25,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 15:45:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:25,337 INFO L225 Difference]: With dead ends: 42 [2021-11-19 15:45:25,337 INFO L226 Difference]: Without dead ends: 35 [2021-11-19 15:45:25,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:45:25,341 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:25,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:45:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-19 15:45:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 13. [2021-11-19 15:45:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-19 15:45:25,354 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-11-19 15:45:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:25,354 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-19 15:45:25,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-19 15:45:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 15:45:25,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:25,356 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-11-19 15:45:25,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:25,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:45:25,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash 735371177, now seen corresponding path program 2 times [2021-11-19 15:45:25,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:45:25,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854464270] [2021-11-19 15:45:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:25,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:45:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:25,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:45:25,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854464270] [2021-11-19 15:45:25,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854464270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:45:25,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496150024] [2021-11-19 15:45:25,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:45:25,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:45:25,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:25,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:45:25,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 15:45:25,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-19 15:45:25,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:45:25,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:45:25,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:25,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:25,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496150024] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:25,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [179824810] [2021-11-19 15:45:25,875 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-19 15:45:25,875 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:45:25,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:45:25,876 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:45:25,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:45:25,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:25,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-19 15:45:25,889 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:25,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-19 15:45:25,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-19 15:45:25,904 INFO L446 ElimStorePlain]: Different costs {4=[|v_#length_10|], 18=[|v_#valid_25|]} [2021-11-19 15:45:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 15:45:25,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:25,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:25,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:25,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:25,932 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:25,956 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-19 15:45:25,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-11-19 15:45:25,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:25,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:25,968 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:25,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:25,972 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:25,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 15:45:25,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-19 15:45:25,976 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:103, output treesize:96 [2021-11-19 15:45:25,983 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-11-19 15:45:25,996 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:25,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,007 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:45:26,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-19 15:45:26,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:26,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 15:45:26,016 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,018 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,022 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:45:26,025 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:26,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-19 15:45:26,029 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-19 15:45:26,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-19 15:45:26,034 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,040 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,041 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:45:26,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:26,044 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,050 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,051 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:45:26,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 15:45:26,054 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-19 15:45:26,058 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:26,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 15:45:26,062 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 15:45:26,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-19 15:45:26,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:26,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:26,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2021-11-19 15:45:26,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:26,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:26,102 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:26,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:26,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-19 15:45:26,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 15:45:26,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 15:45:26,120 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:26,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-19 15:45:26,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:26,160 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:243, output treesize:231 [2021-11-19 15:45:26,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,206 INFO L180 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size [2021-11-19 15:45:26,215 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:26,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:26,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-19 15:45:26,226 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:26,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,241 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:26,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:45:26,243 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,245 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:26,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:26,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-19 15:45:26,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,252 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:26,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:26,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:26,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-19 15:45:26,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 15:45:26,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:45:26,285 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-19 15:45:26,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-19 15:45:26,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:26,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:26,288 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:26,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,293 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:45:26,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:26,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:26,301 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:26,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:26,306 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:26,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 15:45:26,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:26,311 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:127, output treesize:124 [2021-11-19 15:45:26,315 INFO L180 QuantifierPusher]: treesize reduction 28, result has 50.9 percent of original size [2021-11-19 15:45:26,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 15:45:26,321 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-11-19 15:45:26,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 15:45:26,326 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:45:26,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:45:26,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:45:26,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-19 15:45:26,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711467239] [2021-11-19 15:45:26,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:45:26,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:45:26,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:45:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:45:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=166, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:45:26,532 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:26,622 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2021-11-19 15:45:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:45:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 15:45:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:26,624 INFO L225 Difference]: With dead ends: 90 [2021-11-19 15:45:26,624 INFO L226 Difference]: Without dead ends: 83 [2021-11-19 15:45:26,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=166, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:45:26,626 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 98 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:26,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 55 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:45:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-19 15:45:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 19. [2021-11-19 15:45:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-19 15:45:26,647 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2021-11-19 15:45:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:26,647 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-19 15:45:26,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-19 15:45:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:45:26,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:26,649 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2021-11-19 15:45:26,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:45:26,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 15:45:26,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2010531145, now seen corresponding path program 3 times [2021-11-19 15:45:26,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:45:26,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870312672] [2021-11-19 15:45:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:26,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:45:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:27,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:45:27,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870312672] [2021-11-19 15:45:27,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870312672] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:45:27,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433757809] [2021-11-19 15:45:27,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:45:27,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:45:27,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:27,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:45:27,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 15:45:27,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:45:27,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:45:27,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:45:27,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:27,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:27,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433757809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:27,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749405893] [2021-11-19 15:45:27,530 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-19 15:45:27,530 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:45:27,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:45:27,531 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:45:27,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:45:27,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-19 15:45:27,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-19 15:45:27,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-19 15:45:27,544 INFO L446 ElimStorePlain]: Different costs {4=[|v_#length_11|], 18=[|v_#valid_26|]} [2021-11-19 15:45:27,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 15:45:27,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:27,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:27,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,583 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-19 15:45:27,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-11-19 15:45:27,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:27,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:27,589 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,593 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 15:45:27,596 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,597 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:103, output treesize:96 [2021-11-19 15:45:27,600 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-11-19 15:45:27,604 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,607 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,610 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:27,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:45:27,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-19 15:45:27,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-19 15:45:27,615 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,617 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,619 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,620 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:27,621 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 15:45:27,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 15:45:27,624 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 15:45:27,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-19 15:45:27,628 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,630 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:27,633 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,634 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 15:45:27,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 15:45:27,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,638 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:27,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:27,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 15:45:27,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-19 15:45:27,644 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 15:45:27,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-19 15:45:27,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-19 15:45:27,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 15:45:27,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 15:45:27,673 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:27,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-19 15:45:27,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:27,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:27,686 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-11-19 15:45:27,703 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:27,704 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:267, output treesize:260 [2021-11-19 15:45:27,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,734 INFO L180 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size [2021-11-19 15:45:27,739 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,741 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:27,742 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:27,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-19 15:45:27,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,750 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:27,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:45:27,752 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,753 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:27,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:27,756 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:27,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-19 15:45:27,758 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:27,761 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:27,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:27,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-19 15:45:27,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 15:45:27,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:45:27,785 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-19 15:45:27,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-19 15:45:27,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:27,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:27,793 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,797 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:45:27,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:27,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:27,804 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:27,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:27,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:27,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 15:45:27,813 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:27,813 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:127, output treesize:124 [2021-11-19 15:45:27,816 INFO L180 QuantifierPusher]: treesize reduction 28, result has 50.9 percent of original size [2021-11-19 15:45:27,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 15:45:27,821 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-11-19 15:45:27,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 15:45:27,826 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:45:28,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:45:28,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:45:28,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-11-19 15:45:28,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947125510] [2021-11-19 15:45:28,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:45:28,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 15:45:28,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:45:28,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 15:45:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=460, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:45:28,029 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:28,259 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2021-11-19 15:45:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 15:45:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 15:45:28,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:28,268 INFO L225 Difference]: With dead ends: 186 [2021-11-19 15:45:28,268 INFO L226 Difference]: Without dead ends: 179 [2021-11-19 15:45:28,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=460, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:45:28,271 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 434 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:28,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 115 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:45:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-19 15:45:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 31. [2021-11-19 15:45:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-19 15:45:28,291 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 16 [2021-11-19 15:45:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:28,292 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-19 15:45:28,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-19 15:45:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 15:45:28,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:28,293 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2021-11-19 15:45:28,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-19 15:45:28,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-19 15:45:28,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash -95229815, now seen corresponding path program 4 times [2021-11-19 15:45:28,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:45:28,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422040858] [2021-11-19 15:45:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:28,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:45:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:28,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:45:28,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422040858] [2021-11-19 15:45:28,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422040858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:45:28,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309444151] [2021-11-19 15:45:28,903 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 15:45:28,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:45:28,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:28,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:45:28,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 15:45:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:28,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 15:45:28,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:45:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:29,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:45:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:29,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309444151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:45:29,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [510513615] [2021-11-19 15:45:29,867 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-19 15:45:29,867 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:45:29,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:45:29,868 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:45:29,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:45:29,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-19 15:45:29,876 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-19 15:45:29,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-19 15:45:29,881 INFO L446 ElimStorePlain]: Different costs {4=[|v_#length_12|], 18=[|v_#valid_27|]} [2021-11-19 15:45:29,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-19 15:45:29,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:29,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 15:45:29,896 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:29,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:29,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:29,918 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-19 15:45:29,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-11-19 15:45:29,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:29,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:29,925 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:29,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:29,929 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 15:45:29,932 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-19 15:45:29,932 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:103, output treesize:96 [2021-11-19 15:45:29,936 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-11-19 15:45:29,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,943 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,944 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:29,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:45:29,947 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-19 15:45:29,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-19 15:45:29,951 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,953 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 15:45:29,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:29,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-19 15:45:29,964 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 15:45:29,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-19 15:45:29,969 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,972 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-19 15:45:29,975 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,976 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-19 15:45:29,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 15:45:29,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,980 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:29,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:29,982 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-19 15:45:29,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-19 15:45:29,985 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:29,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:29,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-19 15:45:29,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-19 15:45:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:30,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-19 15:45:30,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:30,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 15:45:30,009 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:30,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:30,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:45:30,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-19 15:45:30,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 15:45:30,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-19 15:45:30,027 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:30,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-11-19 15:45:30,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:30,046 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:267, output treesize:260 [2021-11-19 15:45:30,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,079 INFO L180 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size [2021-11-19 15:45:30,083 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:30,086 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:30,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-19 15:45:30,090 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,092 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,093 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:30,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:45:30,095 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,096 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:30,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-19 15:45:30,099 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:30,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-19 15:45:30,102 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-19 15:45:30,104 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:45:30,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:45:30,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-19 15:45:30,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-19 15:45:30,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:45:30,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:30,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-19 15:45:30,118 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:30,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:45:30,139 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-19 15:45:30,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-19 15:45:30,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:30,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-19 15:45:30,142 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 15:45:30,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:45:30,152 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:45:30,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-19 15:45:30,160 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-19 15:45:30,161 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:127, output treesize:124 [2021-11-19 15:45:30,165 INFO L180 QuantifierPusher]: treesize reduction 28, result has 50.9 percent of original size [2021-11-19 15:45:30,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 15:45:30,169 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-11-19 15:45:30,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 15:45:30,173 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:45:30,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:45:30,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:45:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2021-11-19 15:45:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419970419] [2021-11-19 15:45:30,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:45:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-19 15:45:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:45:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-19 15:45:30,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1382, Invalid=1480, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 15:45:30,384 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:45:31,028 INFO L93 Difference]: Finished difference Result 378 states and 450 transitions. [2021-11-19 15:45:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-19 15:45:31,028 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2021-11-19 15:45:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:45:31,031 INFO L225 Difference]: With dead ends: 378 [2021-11-19 15:45:31,031 INFO L226 Difference]: Without dead ends: 371 [2021-11-19 15:45:31,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1382, Invalid=1480, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 15:45:31,033 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 945 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:45:31,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 235 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:45:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-19 15:45:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 55. [2021-11-19 15:45:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-11-19 15:45:31,055 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 28 [2021-11-19 15:45:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:45:31,055 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-11-19 15:45:31,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:45:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-11-19 15:45:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 15:45:31,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:45:31,059 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2021-11-19 15:45:31,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-19 15:45:31,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-19 15:45:31,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:45:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:45:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1280020233, now seen corresponding path program 5 times [2021-11-19 15:45:31,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:45:31,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754746700] [2021-11-19 15:45:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:45:31,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:45:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:45:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:45:32,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:45:32,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754746700] [2021-11-19 15:45:32,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754746700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:45:32,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817123210] [2021-11-19 15:45:32,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:45:32,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:45:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:32,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:45:32,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22196432-7bad-413d-b591-2f1e94ec042e/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process