./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF --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 a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:16:06,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:16:06,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:16:06,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:16:06,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:16:06,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:16:06,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:16:06,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:16:06,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:16:06,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:16:06,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:16:06,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:16:06,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:16:06,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:16:06,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:16:06,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:16:06,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:16:06,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:16:06,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:16:06,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:16:06,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:16:06,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:16:06,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:16:06,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:16:06,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:16:06,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:16:06,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:16:06,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:16:06,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:16:06,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:16:06,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:16:06,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:16:06,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:16:06,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:16:06,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:16:06,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:16:06,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:16:06,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:16:06,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:16:06,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:16:06,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:16:06,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:16:06,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:16:06,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:16:06,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:16:06,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:16:06,298 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:16:06,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:16:06,298 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:16:06,299 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:16:06,299 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:16:06,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:16:06,300 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:16:06,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:16:06,301 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:16:06,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:16:06,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:16:06,302 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:16:06,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:16:06,303 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:16:06,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:16:06,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:16:06,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:16:06,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:16:06,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:16:06,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:16:06,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:16:06,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:16:06,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:16:06,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:16:06,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:16:06,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:16:06,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:16:06,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:06,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:16:06,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:16:06,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:16:06,311 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:16:06,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:16:06,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:16:06,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:16:06,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:16:06,312 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_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2021-11-12 23:16:06,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:16:06,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:16:06,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:16:06,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:16:06,669 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:16:06,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-tiling/mbpr3.c [2021-11-12 23:16:06,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/data/05c8f8c03/b22eeff88b2e4f41ba7a8457c9e63c8c/FLAGc6861f986 [2021-11-12 23:16:07,291 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:16:07,294 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/sv-benchmarks/c/array-tiling/mbpr3.c [2021-11-12 23:16:07,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/data/05c8f8c03/b22eeff88b2e4f41ba7a8457c9e63c8c/FLAGc6861f986 [2021-11-12 23:16:07,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/data/05c8f8c03/b22eeff88b2e4f41ba7a8457c9e63c8c [2021-11-12 23:16:07,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:16:07,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:16:07,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:07,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:16:07,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:16:07,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190eee99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07, skipping insertion in model container [2021-11-12 23:16:07,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:16:07,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:07,875 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2021-11-12 23:16:07,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:07,906 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:16:07,918 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2021-11-12 23:16:07,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:07,945 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:16:07,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07 WrapperNode [2021-11-12 23:16:07,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:07,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:07,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:16:07,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:16:07,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:07,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:16:07,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:16:07,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:16:07,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:07,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:08,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:08,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:08,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:08,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:16:08,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:16:08,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:16:08,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:16:08,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (1/1) ... [2021-11-12 23:16:08,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:08,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:08,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:16:08,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:16:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:16:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:16:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:16:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:16:08,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:16:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:16:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:16:08,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:16:08,439 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 23:16:08,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:16:08 BoogieIcfgContainer [2021-11-12 23:16:08,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:16:08,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:16:08,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:16:08,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:16:08,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:16:07" (1/3) ... [2021-11-12 23:16:08,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbec271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:16:08, skipping insertion in model container [2021-11-12 23:16:08,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:07" (2/3) ... [2021-11-12 23:16:08,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbec271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:16:08, skipping insertion in model container [2021-11-12 23:16:08,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:16:08" (3/3) ... [2021-11-12 23:16:08,450 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2021-11-12 23:16:08,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:16:08,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:16:08,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:16:08,511 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 [2021-11-12 23:16:08,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:16:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:16:08,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:08,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:08,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash 383781863, now seen corresponding path program 1 times [2021-11-12 23:16:08,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:08,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893781170] [2021-11-12 23:16:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:08,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:08,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:08,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893781170] [2021-11-12 23:16:08,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893781170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:16:08,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:16:08,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:16:08,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645293396] [2021-11-12 23:16:08,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:16:08,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:16:08,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:16:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:16:08,937 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:09,060 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2021-11-12 23:16:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:16:09,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 23:16:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:09,082 INFO L225 Difference]: With dead ends: 28 [2021-11-12 23:16:09,083 INFO L226 Difference]: Without dead ends: 12 [2021-11-12 23:16:09,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:16:09,091 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:09,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 13 Invalid, 33 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 93.72ms Time] [2021-11-12 23:16:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-12 23:16:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-12 23:16:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2021-11-12 23:16:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-11-12 23:16:09,135 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2021-11-12 23:16:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:09,136 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-11-12 23:16:09,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-11-12 23:16:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:16:09,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:09,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:09,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:16:09,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 308643540, now seen corresponding path program 1 times [2021-11-12 23:16:09,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:09,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390532023] [2021-11-12 23:16:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:09,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:16:09,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:09,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390532023] [2021-11-12 23:16:09,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390532023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:16:09,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:16:09,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:16:09,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141258625] [2021-11-12 23:16:09,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:16:09,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:16:09,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:16:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:16:09,460 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:09,513 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-11-12 23:16:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:16:09,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:16:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:09,516 INFO L225 Difference]: With dead ends: 20 [2021-11-12 23:16:09,516 INFO L226 Difference]: Without dead ends: 14 [2021-11-12 23:16:09,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:16:09,522 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.44ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:09,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 7 Invalid, 26 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 42.44ms Time] [2021-11-12 23:16:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-12 23:16:09,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-12 23:16:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-12 23:16:09,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 10 [2021-11-12 23:16:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:09,538 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-12 23:16:09,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:09,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-12 23:16:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:16:09,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:09,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:09,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:16:09,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1611323004, now seen corresponding path program 1 times [2021-11-12 23:16:09,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:09,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147401725] [2021-11-12 23:16:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:09,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:10,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:10,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147401725] [2021-11-12 23:16:10,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147401725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:10,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065036324] [2021-11-12 23:16:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:10,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:10,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:10,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:16:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:10,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:16:10,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:10,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 74 [2021-11-12 23:16:10,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-12 23:16:10,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 38 [2021-11-12 23:16:10,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-11-12 23:16:10,656 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-12 23:16:10,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 122 [2021-11-12 23:16:10,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2021-11-12 23:16:10,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 66 [2021-11-12 23:16:10,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:10,765 INFO L354 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2021-11-12 23:16:10,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 50 [2021-11-12 23:16:11,024 INFO L354 Elim1Store]: treesize reduction 147, result has 21.0 percent of original size [2021-11-12 23:16:11,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 129 treesize of output 152 [2021-11-12 23:16:11,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 26 [2021-11-12 23:16:11,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 76 [2021-11-12 23:16:11,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:11,166 INFO L354 Elim1Store]: treesize reduction 98, result has 16.9 percent of original size [2021-11-12 23:16:11,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 65 [2021-11-12 23:16:11,424 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-12 23:16:11,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 72 [2021-11-12 23:16:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:11,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:11,762 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:11,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 160 [2021-11-12 23:16:11,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:11,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:11,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 132 [2021-11-12 23:16:11,867 INFO L354 Elim1Store]: treesize reduction 89, result has 5.3 percent of original size [2021-11-12 23:16:11,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 380 treesize of output 297 [2021-11-12 23:16:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:11,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065036324] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:11,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432708409] [2021-11-12 23:16:11,986 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-12 23:16:11,986 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:11,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:11,999 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:12,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:12,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,038 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:12,041 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:12,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:12,057 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_20|]} [2021-11-12 23:16:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:12,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:12,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:12,072 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:12,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:12,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:12,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:12,127 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:12,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:12,141 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,141 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:12,150 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:12,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:12,158 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:12,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:12,177 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_12|], 15=[|v_#valid_21|]} [2021-11-12 23:16:12,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,206 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:12,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:12,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:12,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:12,211 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:12,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,266 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:12,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:12,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:12,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:12,273 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:12,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:12,297 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,298 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:12,319 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:12,322 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:12,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:12,330 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,332 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:12,334 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:12,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:16:12,340 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:16:12,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-12 23:16:12,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,388 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 70 treesize of output 62 [2021-11-12 23:16:12,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,391 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:12,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:16:12,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:16:12,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:12,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-12 23:16:12,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:12,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:12,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:12,438 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:12,439 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:12,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:12,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 6] total 22 [2021-11-12 23:16:12,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53123302] [2021-11-12 23:16:12,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:12,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 23:16:12,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 23:16:12,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:16:12,448 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:16,819 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-11-12 23:16:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:16:16,819 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 23:16:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:16,820 INFO L225 Difference]: With dead ends: 25 [2021-11-12 23:16:16,820 INFO L226 Difference]: Without dead ends: 23 [2021-11-12 23:16:16,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:16:16,821 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 96.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:16,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 97 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [22 Valid, 60 Invalid, 0 Unknown, 15 Unchecked, 96.73ms Time] [2021-11-12 23:16:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-12 23:16:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2021-11-12 23:16:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-12 23:16:16,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2021-11-12 23:16:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:16,827 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-12 23:16:16,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-12 23:16:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:16:16,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:16,828 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:16,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-12 23:16:17,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:17,029 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1931181345, now seen corresponding path program 1 times [2021-11-12 23:16:17,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:17,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254446136] [2021-11-12 23:16:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:17,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:17,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:17,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254446136] [2021-11-12 23:16:17,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254446136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:17,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574797662] [2021-11-12 23:16:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:17,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:17,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:17,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:17,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:16:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:17,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 23:16:17,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:17,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 70 [2021-11-12 23:16:17,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-12 23:16:17,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2021-11-12 23:16:17,487 INFO L354 Elim1Store]: treesize reduction 168, result has 13.0 percent of original size [2021-11-12 23:16:17,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 58 treesize of output 66 [2021-11-12 23:16:17,525 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-12 23:16:17,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 27 [2021-11-12 23:16:17,607 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-12 23:16:17,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 126 [2021-11-12 23:16:17,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:17,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-11-12 23:16:17,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-12 23:16:17,762 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-12 23:16:17,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 118 treesize of output 121 [2021-11-12 23:16:17,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:17,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:17,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:17,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:17,815 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-12 23:16:17,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 28 [2021-11-12 23:16:18,046 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-12 23:16:18,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 66 [2021-11-12 23:16:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:16:18,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:18,312 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 164 [2021-11-12 23:16:18,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:18,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:18,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 136 [2021-11-12 23:16:18,403 INFO L354 Elim1Store]: treesize reduction 95, result has 5.0 percent of original size [2021-11-12 23:16:18,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 834 treesize of output 669 [2021-11-12 23:16:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:18,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574797662] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:18,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [383993417] [2021-11-12 23:16:18,521 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:16:18,521 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:18,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:18,522 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:18,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:18,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:18,532 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:18,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:18,537 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_22|]} [2021-11-12 23:16:18,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:18,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:18,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:18,549 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:18,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:18,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:18,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:18,573 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:18,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:18,580 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,581 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:18,586 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:18,587 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:18,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:18,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:18,597 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_14|], 15=[|v_#valid_23|]} [2021-11-12 23:16:18,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,615 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:18,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:18,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:18,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:18,620 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:18,627 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,666 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:18,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:18,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:18,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:18,672 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:18,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:18,685 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,686 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:18,699 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:18,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,706 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:18,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:18,713 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,714 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:18,716 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:18,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:16:18,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:16:18,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-12 23:16:18,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:18,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:18,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:18,747 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:18,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:18,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:18,764 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,781 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 70 treesize of output 62 [2021-11-12 23:16:18,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:18,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:16:18,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:16:18,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:18,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-12 23:16:18,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:18,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:18,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:18,819 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:18,819 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:18,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:18,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 22 [2021-11-12 23:16:18,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443429551] [2021-11-12 23:16:18,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:18,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 23:16:18,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 23:16:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:16:18,824 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:19,665 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-11-12 23:16:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:16:19,666 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:16:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:19,666 INFO L225 Difference]: With dead ends: 31 [2021-11-12 23:16:19,667 INFO L226 Difference]: Without dead ends: 29 [2021-11-12 23:16:19,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-11-12 23:16:19,668 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 157.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:19,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 175 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [24 Valid, 141 Invalid, 0 Unknown, 10 Unchecked, 157.23ms Time] [2021-11-12 23:16:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-12 23:16:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-11-12 23:16:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-11-12 23:16:19,675 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2021-11-12 23:16:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:19,675 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-11-12 23:16:19,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-11-12 23:16:19,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:16:19,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:19,677 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:19,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:19,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 741845092, now seen corresponding path program 2 times [2021-11-12 23:16:19,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:19,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416643488] [2021-11-12 23:16:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:19,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:20,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:20,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416643488] [2021-11-12 23:16:20,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416643488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:20,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146634963] [2021-11-12 23:16:20,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:16:20,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:20,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:20,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:20,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 23:16:20,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-12 23:16:20,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:16:20,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:16:20,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:20,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2021-11-12 23:16:20,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:20,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-12 23:16:20,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2021-11-12 23:16:20,279 INFO L354 Elim1Store]: treesize reduction 168, result has 14.7 percent of original size [2021-11-12 23:16:20,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 66 [2021-11-12 23:16:20,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:20,308 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-12 23:16:20,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-11-12 23:16:20,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-12 23:16:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:20,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:20,517 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 104 [2021-11-12 23:16:20,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:20,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:20,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2021-11-12 23:16:20,615 INFO L354 Elim1Store]: treesize reduction 90, result has 10.0 percent of original size [2021-11-12 23:16:20,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 433 treesize of output 351 [2021-11-12 23:16:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:20,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146634963] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:20,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1511367488] [2021-11-12 23:16:20,772 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:16:20,773 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:20,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:20,773 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:20,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:20,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,784 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:20,785 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:20,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:20,790 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_25|]} [2021-11-12 23:16:20,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:20,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:20,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:20,803 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:20,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:20,807 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:20,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:20,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:20,827 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:20,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:20,836 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:20,840 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:20,840 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:20,845 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:20,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:20,847 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:20,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:20,853 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_17|], 15=[|v_#valid_26|]} [2021-11-12 23:16:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,870 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:20,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:20,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:20,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:20,874 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:20,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:20,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,923 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:20,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:20,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:20,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:20,928 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:20,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:20,939 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:20,944 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:20,944 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:20,959 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:20,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,964 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-12 23:16:20,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-12 23:16:20,968 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,969 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:16:20,970 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:16:20,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-12 23:16:20,973 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:20,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:20,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-11-12 23:16:20,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 431 [2021-11-12 23:16:21,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,012 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 108 treesize of output 100 [2021-11-12 23:16:21,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:21,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:21,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:21,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-12 23:16:21,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:16:21,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:21,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-12 23:16:21,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:21,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:21,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:21,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:21,050 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:21,050 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:21,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:21,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2021-11-12 23:16:21,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135150061] [2021-11-12 23:16:21,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:21,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-12 23:16:21,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-12 23:16:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:16:21,057 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:21,501 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2021-11-12 23:16:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:16:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 23:16:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:21,504 INFO L225 Difference]: With dead ends: 30 [2021-11-12 23:16:21,504 INFO L226 Difference]: Without dead ends: 28 [2021-11-12 23:16:21,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 23:16:21,505 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:21,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 225 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [56 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 179.67ms Time] [2021-11-12 23:16:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-12 23:16:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2021-11-12 23:16:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-12 23:16:21,518 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2021-11-12 23:16:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:21,518 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-12 23:16:21,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-12 23:16:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 23:16:21,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:21,520 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:21,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-12 23:16:21,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-12 23:16:21,740 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1589243327, now seen corresponding path program 3 times [2021-11-12 23:16:21,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:21,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966575600] [2021-11-12 23:16:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:21,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:21,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:21,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966575600] [2021-11-12 23:16:21,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966575600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:21,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605133877] [2021-11-12 23:16:21,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:16:21,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:21,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:21,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 23:16:22,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:16:22,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:16:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:16:22,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:22,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:16:22,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605133877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:22,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [683554889] [2021-11-12 23:16:22,660 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:16:22,660 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:22,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:22,661 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:22,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:22,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,667 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:22,668 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:22,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:22,673 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_27|]} [2021-11-12 23:16:22,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:22,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:22,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:22,684 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:22,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:22,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:22,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:22,726 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:22,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:22,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,753 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:22,758 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:22,759 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:22,762 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:22,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:22,768 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_19|], 15=[|v_#valid_28|]} [2021-11-12 23:16:22,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,791 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:22,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:22,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:22,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:22,796 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:22,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,846 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:22,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:22,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:22,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:22,852 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:22,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:22,867 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,867 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:22,882 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:22,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,889 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:22,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:22,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,900 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:22,903 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:22,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:16:22,905 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:16:22,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-12 23:16:22,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:22,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:22,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:22,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,946 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:22,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:22,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:22,948 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,964 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 70 treesize of output 62 [2021-11-12 23:16:22,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,966 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:22,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:16:22,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:16:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:22,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-12 23:16:22,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:22,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:22,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:22,999 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:22,999 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:23,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2021-11-12 23:16:23,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92200249] [2021-11-12 23:16:23,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:23,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-12 23:16:23,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-12 23:16:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:16:23,003 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:23,273 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-11-12 23:16:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:16:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 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 21 [2021-11-12 23:16:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:23,274 INFO L225 Difference]: With dead ends: 53 [2021-11-12 23:16:23,275 INFO L226 Difference]: Without dead ends: 23 [2021-11-12 23:16:23,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:16:23,277 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:23,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 31 Invalid, 171 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [69 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 134.55ms Time] [2021-11-12 23:16:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-12 23:16:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-12 23:16:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-12 23:16:23,296 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2021-11-12 23:16:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:23,296 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-12 23:16:23,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-12 23:16:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 23:16:23,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:23,299 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:23,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-12 23:16:23,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-12 23:16:23,517 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1112436306, now seen corresponding path program 4 times [2021-11-12 23:16:23,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:23,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847948222] [2021-11-12 23:16:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:23,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:16:23,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:23,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847948222] [2021-11-12 23:16:23,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847948222] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:23,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428407643] [2021-11-12 23:16:23,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:16:23,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:23,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:23,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:16:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:23,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:16:23,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:16:23,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:16:24,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428407643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:24,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481583516] [2021-11-12 23:16:24,089 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:16:24,090 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:24,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:24,090 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:24,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:24,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,096 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:24,097 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:24,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:24,101 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_20|], 21=[|v_#valid_29|]} [2021-11-12 23:16:24,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:24,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:24,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:24,113 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:24,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:24,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:24,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:24,138 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:24,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:24,152 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,152 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:24,156 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:24,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:24,158 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:24,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:24,164 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_21|], 15=[|v_#valid_30|]} [2021-11-12 23:16:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,180 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:24,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:24,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:24,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:24,184 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:24,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,228 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:24,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:24,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:24,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:24,233 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:24,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:24,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,245 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:24,257 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:24,260 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,266 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-12 23:16:24,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-12 23:16:24,270 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,271 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:16:24,273 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:16:24,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-12 23:16:24,275 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-11-12 23:16:24,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 431 [2021-11-12 23:16:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,316 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 108 treesize of output 100 [2021-11-12 23:16:24,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,318 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:24,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-12 23:16:24,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-12 23:16:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:24,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-12 23:16:24,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:24,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:24,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:24,351 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:24,351 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:24,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:24,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-12 23:16:24,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517915539] [2021-11-12 23:16:24,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:24,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:16:24,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:24,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:16:24,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:16:24,355 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:24,450 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-11-12 23:16:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:16:24,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-12 23:16:24,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:24,451 INFO L225 Difference]: With dead ends: 40 [2021-11-12 23:16:24,451 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 23:16:24,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:16:24,452 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:24,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 20 Invalid, 98 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [26 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 71.24ms Time] [2021-11-12 23:16:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 23:16:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-12 23:16:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-12 23:16:24,459 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 22 [2021-11-12 23:16:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:24,459 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-12 23:16:24,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-12 23:16:24,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:16:24,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:24,461 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:24,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:24,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:24,688 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1570634082, now seen corresponding path program 5 times [2021-11-12 23:16:24,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:24,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193482141] [2021-11-12 23:16:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:24,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:25,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:25,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193482141] [2021-11-12 23:16:25,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193482141] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:25,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095818196] [2021-11-12 23:16:25,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:16:25,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:25,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:25,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 23:16:25,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-12 23:16:25,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:16:25,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-12 23:16:25,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:25,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 78 [2021-11-12 23:16:25,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-12 23:16:25,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-12 23:16:25,804 INFO L354 Elim1Store]: treesize reduction 192, result has 13.1 percent of original size [2021-11-12 23:16:25,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 74 [2021-11-12 23:16:25,848 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-12 23:16:25,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2021-11-12 23:16:25,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:25,981 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-12 23:16:25,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 120 [2021-11-12 23:16:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-11-12 23:16:26,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2021-11-12 23:16:26,090 INFO L354 Elim1Store]: treesize reduction 495, result has 10.0 percent of original size [2021-11-12 23:16:26,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 118 treesize of output 121 [2021-11-12 23:16:26,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:26,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 40 [2021-11-12 23:16:26,223 INFO L354 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2021-11-12 23:16:26,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 117 [2021-11-12 23:16:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-11-12 23:16:26,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 58 [2021-11-12 23:16:26,313 INFO L354 Elim1Store]: treesize reduction 336, result has 11.3 percent of original size [2021-11-12 23:16:26,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 90 treesize of output 94 [2021-11-12 23:16:26,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-11-12 23:16:26,476 INFO L354 Elim1Store]: treesize reduction 228, result has 19.4 percent of original size [2021-11-12 23:16:26,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 134 treesize of output 162 [2021-11-12 23:16:26,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 113 [2021-11-12 23:16:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,588 INFO L354 Elim1Store]: treesize reduction 141, result has 16.6 percent of original size [2021-11-12 23:16:26,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 103 [2021-11-12 23:16:26,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 40 [2021-11-12 23:16:26,795 INFO L354 Elim1Store]: treesize reduction 347, result has 20.0 percent of original size [2021-11-12 23:16:26,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 149 treesize of output 200 [2021-11-12 23:16:26,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:26,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 49 [2021-11-12 23:16:26,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2021-11-12 23:16:27,074 INFO L354 Elim1Store]: treesize reduction 891, result has 9.1 percent of original size [2021-11-12 23:16:27,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 136 treesize of output 161 [2021-11-12 23:16:27,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:27,217 INFO L354 Elim1Store]: treesize reduction 36, result has 21.7 percent of original size [2021-11-12 23:16:27,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 68 [2021-11-12 23:16:27,761 INFO L354 Elim1Store]: treesize reduction 81, result has 1.2 percent of original size [2021-11-12 23:16:27,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 69 [2021-11-12 23:16:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:27,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:28,758 WARN L838 $PredicateComparison]: unable to prove that (and (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse0 (select (let ((.cse3 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse1 (let ((.cse4 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse3) 0)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)))) (store .cse4 .cse5 (select .cse4 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse3))) (store .cse1 .cse2 (select .cse1 .cse2)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse0 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0))))) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse6 (select (let ((.cse9 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse7 (let ((.cse10 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse9) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse11 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse9 (- 8)))) (store .cse10 .cse11 (select .cse10 .cse11)))) (.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse9))) (store .cse7 .cse8 (select .cse7 .cse8)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse6) (= .cse6 0)))) (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|))) is different from false [2021-11-12 23:16:29,669 WARN L838 $PredicateComparison]: unable to prove that (and (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_subst_1 Int)) (let ((.cse0 (select (let ((.cse3 (* v_subst_1 12))) (let ((.cse1 (let ((.cse4 (store (let ((.cse8 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse6 (let ((.cse9 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse8) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse10 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse8 (- 8)))) (store .cse9 .cse10 (select .cse9 .cse10)))) (.cse7 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse8))) (store .cse6 .cse7 (select .cse6 .cse7)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse3) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)))) (store .cse4 .cse5 (select .cse4 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse3))) (store .cse1 .cse2 (select .cse1 .cse2)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0) (= .cse0 0)))) (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|)) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_subst_2 Int)) (let ((.cse11 (select (let ((.cse14 (* v_subst_2 12))) (let ((.cse12 (let ((.cse15 (store (let ((.cse19 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse17 (let ((.cse20 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse19) 0)) (.cse21 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse19 (- 8)))) (store .cse20 .cse21 (select .cse20 .cse21)))) (.cse18 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse19))) (store .cse17 .cse18 (select .cse17 .cse18)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse14) 0)) (.cse16 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse14 (- 8)))) (store .cse15 .cse16 (select .cse15 .cse16)))) (.cse13 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse14))) (store .cse12 .cse13 (select .cse12 .cse13)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse11 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse11)))) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|))) is different from false [2021-11-12 23:16:30,645 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse33 (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse16 (< |c_ULTIMATE.start_main_~CCCELVOL2~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|))) (and (or (and (or (forall ((v_subst_3 Int) (v_subst_1 Int)) (let ((.cse0 (select (let ((.cse3 (* v_subst_1 12))) (let ((.cse1 (let ((.cse4 (store (let ((.cse8 (* v_subst_3 12))) (let ((.cse6 (let ((.cse9 (store (let ((.cse13 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse11 (let ((.cse14 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse13 (- 8)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse15 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse13))) (store .cse14 .cse15 (select .cse14 .cse15)))) (.cse12 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse13))) (store .cse11 .cse12 (select .cse11 .cse12)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse8) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse10 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse8 (- 8)))) (store .cse9 .cse10 (select .cse9 .cse10)))) (.cse7 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse8))) (store .cse6 .cse7 (select .cse6 .cse7)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse3) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)))) (store .cse4 .cse5 (select .cse4 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse3))) (store .cse1 .cse2 (select .cse1 .cse2)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0) (= 0 .cse0)))) .cse16) (or (forall ((v_subst_3 Int) (v_subst_1 Int)) (let ((.cse17 (select (let ((.cse20 (* v_subst_1 12))) (let ((.cse18 (let ((.cse21 (store (let ((.cse25 (* v_subst_3 12))) (let ((.cse23 (let ((.cse26 (store (let ((.cse30 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse28 (let ((.cse31 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse30 (- 8)) 0)) (.cse32 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse30))) (store .cse31 .cse32 (select .cse31 .cse32)))) (.cse29 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse30))) (store .cse28 .cse29 (select .cse28 .cse29)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse25) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse27 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse25 (- 8)))) (store .cse26 .cse27 (select .cse26 .cse27)))) (.cse24 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse25))) (store .cse23 .cse24 (select .cse23 .cse24)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse20) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse22 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse20 (- 8)))) (store .cse21 .cse22 (select .cse21 .cse22)))) (.cse19 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse20))) (store .cse18 .cse19 (select .cse18 .cse19)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse17) (= .cse17 0)))) .cse33)) (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|)) (or (and (or (forall ((v_subst_4 Int) (v_subst_2 Int)) (let ((.cse34 (select (let ((.cse37 (* v_subst_2 12))) (let ((.cse35 (let ((.cse38 (store (let ((.cse42 (* v_subst_4 12))) (let ((.cse40 (let ((.cse43 (store (let ((.cse47 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse45 (let ((.cse48 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse47 (- 8)) 0)) (.cse49 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse47))) (store .cse48 .cse49 (select .cse48 .cse49)))) (.cse46 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse47))) (store .cse45 .cse46 (select .cse45 .cse46)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse42) 0)) (.cse44 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse42 (- 8)))) (store .cse43 .cse44 (select .cse43 .cse44)))) (.cse41 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse42))) (store .cse40 .cse41 (select .cse40 .cse41)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse37) 0)) (.cse39 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse37 (- 8)))) (store .cse38 .cse39 (select .cse38 .cse39)))) (.cse36 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse37))) (store .cse35 .cse36 (select .cse35 .cse36)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse34 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse34)))) .cse33) (or (forall ((v_subst_4 Int) (v_subst_2 Int)) (let ((.cse50 (select (let ((.cse53 (* v_subst_2 12))) (let ((.cse51 (let ((.cse54 (store (let ((.cse58 (* v_subst_4 12))) (let ((.cse56 (let ((.cse59 (store (let ((.cse63 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse61 (let ((.cse64 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse63 (- 8)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse65 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse63))) (store .cse64 .cse65 (select .cse64 .cse65)))) (.cse62 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse63))) (store .cse61 .cse62 (select .cse61 .cse62)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse58) 0)) (.cse60 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse58 (- 8)))) (store .cse59 .cse60 (select .cse59 .cse60)))) (.cse57 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse58))) (store .cse56 .cse57 (select .cse56 .cse57)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse53) 0)) (.cse55 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse53 (- 8)))) (store .cse54 .cse55 (select .cse54 .cse55)))) (.cse52 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse53))) (store .cse51 .cse52 (select .cse51 .cse52)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse50) (= 0 .cse50)))) .cse16)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)))) is different from false [2021-11-12 23:16:31,905 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse21 (< |c_ULTIMATE.start_main_~CCCELVOL2~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|))) (and (or (and (or .cse0 (forall ((v_subst_3 Int) (v_subst_1 Int)) (let ((.cse1 (select (let ((.cse4 (* v_subst_1 12))) (let ((.cse2 (let ((.cse5 (store (let ((.cse9 (* v_subst_3 12))) (let ((.cse7 (let ((.cse10 (store (let ((.cse14 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse12 (let ((.cse15 (store (let ((.cse17 (let ((.cse19 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse14 (- 8)) 0)) (.cse20 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse14))) (store .cse19 .cse20 (select .cse19 .cse20)))) (.cse18 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse14))) (store .cse17 .cse18 (select .cse17 .cse18))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse14 4) 0)) (.cse16 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse14))) (store .cse15 .cse16 (select .cse15 .cse16)))) (.cse13 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse14))) (store .cse12 .cse13 (select .cse12 .cse13)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse9) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse11 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse9 (- 8)))) (store .cse10 .cse11 (select .cse10 .cse11)))) (.cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse9))) (store .cse7 .cse8 (select .cse7 .cse8)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse4) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse6 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 8)))) (store .cse5 .cse6 (select .cse5 .cse6)))) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse4))) (store .cse2 .cse3 (select .cse2 .cse3)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse1) (= .cse1 0))))) (or .cse21 (forall ((v_subst_3 Int) (v_subst_1 Int)) (let ((.cse22 (select (let ((.cse25 (* v_subst_1 12))) (let ((.cse23 (let ((.cse26 (store (let ((.cse30 (* v_subst_3 12))) (let ((.cse28 (let ((.cse31 (store (let ((.cse35 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse33 (let ((.cse36 (store (let ((.cse38 (let ((.cse40 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse35 (- 8)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse41 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse35))) (store .cse40 .cse41 (select .cse40 .cse41)))) (.cse39 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse35))) (store .cse38 .cse39 (select .cse38 .cse39))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse35 4) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse37 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse35))) (store .cse36 .cse37 (select .cse36 .cse37)))) (.cse34 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse35))) (store .cse33 .cse34 (select .cse33 .cse34)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse30) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse32 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse30 (- 8)))) (store .cse31 .cse32 (select .cse31 .cse32)))) (.cse29 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse30))) (store .cse28 .cse29 (select .cse28 .cse29)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse25) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse27 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse25 (- 8)))) (store .cse26 .cse27 (select .cse26 .cse27)))) (.cse24 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse25))) (store .cse23 .cse24 (select .cse23 .cse24)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse22 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse22)))))) (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|) (and (or (forall ((v_subst_4 Int) (v_subst_2 Int)) (let ((.cse42 (select (let ((.cse45 (* v_subst_2 12))) (let ((.cse43 (let ((.cse46 (store (let ((.cse50 (* v_subst_4 12))) (let ((.cse48 (let ((.cse51 (store (let ((.cse55 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse53 (let ((.cse56 (store (let ((.cse58 (let ((.cse60 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse55 (- 8)) 0)) (.cse61 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse55))) (store .cse60 .cse61 (select .cse60 .cse61)))) (.cse59 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse55))) (store .cse58 .cse59 (select .cse58 .cse59))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse55 4) 0)) (.cse57 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse55))) (store .cse56 .cse57 (select .cse56 .cse57)))) (.cse54 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse55))) (store .cse53 .cse54 (select .cse53 .cse54)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse50) 0)) (.cse52 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse50 (- 8)))) (store .cse51 .cse52 (select .cse51 .cse52)))) (.cse49 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse50))) (store .cse48 .cse49 (select .cse48 .cse49)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse45) 0)) (.cse47 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse45 (- 8)))) (store .cse46 .cse47 (select .cse46 .cse47)))) (.cse44 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse45))) (store .cse43 .cse44 (select .cse43 .cse44)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse42 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse42)))) .cse0) (or (forall ((v_subst_4 Int) (v_subst_2 Int)) (let ((.cse62 (select (let ((.cse65 (* v_subst_2 12))) (let ((.cse63 (let ((.cse66 (store (let ((.cse70 (* v_subst_4 12))) (let ((.cse68 (let ((.cse71 (store (let ((.cse75 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse73 (let ((.cse76 (store (let ((.cse78 (let ((.cse80 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse75 (- 8)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse81 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse75))) (store .cse80 .cse81 (select .cse80 .cse81)))) (.cse79 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse75))) (store .cse78 .cse79 (select .cse78 .cse79))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse75 4) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse77 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse75))) (store .cse76 .cse77 (select .cse76 .cse77)))) (.cse74 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse75))) (store .cse73 .cse74 (select .cse73 .cse74)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse70) 0)) (.cse72 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse70 (- 8)))) (store .cse71 .cse72 (select .cse71 .cse72)))) (.cse69 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse70))) (store .cse68 .cse69 (select .cse68 .cse69)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse65) 0)) (.cse67 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse65 (- 8)))) (store .cse66 .cse67 (select .cse66 .cse67)))) (.cse64 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse65))) (store .cse63 .cse64 (select .cse63 .cse64)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse62 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse62)))) .cse21))))) is different from false [2021-11-12 23:16:32,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 164 [2021-11-12 23:16:32,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:32,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:32,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 136 [2021-11-12 23:16:32,211 INFO L354 Elim1Store]: treesize reduction 95, result has 5.0 percent of original size [2021-11-12 23:16:32,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 408 treesize of output 321 [2021-11-12 23:16:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-12 23:16:32,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095818196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:32,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [434788271] [2021-11-12 23:16:32,333 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:16:32,333 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:32,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:32,334 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:32,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:32,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,345 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:32,347 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:32,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:32,358 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_22|], 21=[|v_#valid_31|]} [2021-11-12 23:16:32,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:32,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:32,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:32,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:32,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:32,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:32,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:32,399 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:32,403 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:32,406 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,406 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:32,410 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:32,411 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:32,413 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:32,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:32,419 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_23|], 15=[|v_#valid_32|]} [2021-11-12 23:16:32,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,450 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:32,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:32,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:32,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:32,454 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:32,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,504 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:32,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:32,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:32,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:32,509 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:32,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:32,520 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,520 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:32,531 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:32,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,534 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:32,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:32,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:32,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:32,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:16:32,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:16:32,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-12 23:16:32,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,579 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 70 treesize of output 62 [2021-11-12 23:16:32,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,580 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:32,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:16:32,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:16:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:32,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-12 23:16:32,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:32,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:32,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:32,623 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:32,624 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:32,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:32,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 14] total 42 [2021-11-12 23:16:32,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162570722] [2021-11-12 23:16:32,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:32,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-12 23:16:32,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-12 23:16:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1260, Unknown=4, NotChecked=300, Total=1722 [2021-11-12 23:16:32,629 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:42,212 WARN L227 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 169 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:16:43,043 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse0 (<= 3 |c_ULTIMATE.start_main_~CCCELVOL2~0#1|)) (.cse16 (<= 7 (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (.cse17 (= |c_ULTIMATE.start_main_~CCCELVOL1~0#1| 1)) (.cse15 (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)))) (and .cse0 (let ((.cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 4)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse1) (= .cse1 0))) (<= |c_ULTIMATE.start_main_~i~0#1| 3) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_subst_1 Int)) (let ((.cse4 (select (let ((.cse7 (* v_subst_1 12))) (let ((.cse5 (let ((.cse8 (store (let ((.cse12 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse10 (let ((.cse13 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse12) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse14 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse12 (- 8)))) (store .cse13 .cse14 (select .cse13 .cse14)))) (.cse11 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse12))) (store .cse10 .cse11 (select .cse10 .cse11)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse7) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse9 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse7 (- 8)))) (store .cse8 .cse9 (select .cse8 .cse9)))) (.cse6 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse7))) (store .cse5 .cse6 (select .cse5 .cse6)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse4) (= .cse4 0)))) (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|)) (<= 2 c_~CELLCOUNT~0) (<= 7 (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3))) (<= 3 .cse15) (<= 7 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) .cse16 .cse17 (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (= 12 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 4 |c_ULTIMATE.start_main_~i~0#1|))) (or (and .cse0 .cse16 .cse17) (< |c_ULTIMATE.start_main_~i~0#1| 3)) (<= 7 (select .cse2 12)) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_subst_2 Int)) (let ((.cse18 (select (let ((.cse21 (* v_subst_2 12))) (let ((.cse19 (let ((.cse22 (store (let ((.cse26 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse24 (let ((.cse27 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse26) 0)) (.cse28 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse26 (- 8)))) (store .cse27 .cse28 (select .cse27 .cse28)))) (.cse25 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse26))) (store .cse24 .cse25 (select .cse24 .cse25)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse21) 0)) (.cse23 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse21 (- 8)))) (store .cse22 .cse23 (select .cse22 .cse23)))) (.cse20 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse21))) (store .cse19 .cse20 (select .cse19 .cse20)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse18 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse18)))) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) .cse15)))) is different from false [2021-11-12 23:16:43,625 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse11 (select .cse12 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)))) (and (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_subst_1 Int)) (let ((.cse0 (select (let ((.cse3 (* v_subst_1 12))) (let ((.cse1 (let ((.cse4 (store (let ((.cse8 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse6 (let ((.cse9 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse8) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse10 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse8 (- 8)))) (store .cse9 .cse10 (select .cse9 .cse10)))) (.cse7 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse8))) (store .cse6 .cse7 (select .cse6 .cse7)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse3) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)))) (store .cse4 .cse5 (select .cse4 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse3))) (store .cse1 .cse2 (select .cse1 .cse2)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0) (= .cse0 0)))) (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|)) (<= 3 .cse11) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 7 (select .cse12 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (= |c_ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 7 (select (store .cse12 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~i~0#1| 12)) 0) 12)) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_subst_2 Int)) (let ((.cse13 (select (let ((.cse16 (* v_subst_2 12))) (let ((.cse14 (let ((.cse17 (store (let ((.cse21 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse19 (let ((.cse22 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse21) 0)) (.cse23 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse21 (- 8)))) (store .cse22 .cse23 (select .cse22 .cse23)))) (.cse20 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse21))) (store .cse19 .cse20 (select .cse19 .cse20)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse16) 0)) (.cse18 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse16 (- 8)))) (store .cse17 .cse18 (select .cse17 .cse18)))) (.cse15 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse16))) (store .cse14 .cse15 (select .cse14 .cse15)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse13 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse13)))) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (= (select .cse12 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) .cse11)))) is different from false [2021-11-12 23:16:44,233 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse7 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (.cse15 (< |c_ULTIMATE.start_main_~CCCELVOL1~0#1| |c_ULTIMATE.start_main_~MINVAL~0#1|)) (.cse6 (select .cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)))) (and (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~CCCELVOL1~0#1|) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse0 (select (let ((.cse3 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse1 (let ((.cse4 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse3) 0)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)))) (store .cse4 .cse5 (select .cse4 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse3))) (store .cse1 .cse2 (select .cse1 .cse2)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse0 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0))))) (<= 3 .cse6) (<= .cse7 24) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 7 (select .cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (exists ((|v_ULTIMATE.start_main_~i~0#1_166| Int)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_166| 12))) 0)) (< 23 .cse7) (or (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse9 (select (let ((.cse12 (* |ULTIMATE.start_main_~i~0#1| 12))) (let ((.cse10 (let ((.cse13 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse12) |c_ULTIMATE.start_main_~CCCELVOL1~0#1|)) (.cse14 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse12 (- 8)))) (store .cse13 .cse14 (select .cse13 .cse14)))) (.cse11 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse12))) (store .cse10 .cse11 (select .cse10 .cse11)))) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse9) (= .cse9 0)))) .cse15) (<= 7 (let ((.cse16 (* |c_ULTIMATE.start_main_~i~0#1| 12))) (select (store .cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) .cse16) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 12) .cse16)))) .cse15 (= (select .cse8 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) .cse6)))) is different from false [2021-11-12 23:16:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:44,738 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-11-12 23:16:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-12 23:16:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 0 states have call successors, (0), 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 24 [2021-11-12 23:16:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:44,739 INFO L225 Difference]: With dead ends: 50 [2021-11-12 23:16:44,739 INFO L226 Difference]: Without dead ends: 48 [2021-11-12 23:16:44,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=375, Invalid=2726, Unknown=7, NotChecked=798, Total=3906 [2021-11-12 23:16:44,742 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 279.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:44,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 421 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [88 Valid, 216 Invalid, 0 Unknown, 117 Unchecked, 279.67ms Time] [2021-11-12 23:16:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-12 23:16:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2021-11-12 23:16:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-12 23:16:44,751 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2021-11-12 23:16:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:44,751 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-12 23:16:44,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-12 23:16:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 23:16:44,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:44,752 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:44,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-12 23:16:44,953 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1634482854, now seen corresponding path program 6 times [2021-11-12 23:16:44,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:44,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101725111] [2021-11-12 23:16:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:44,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 23:16:45,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:45,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101725111] [2021-11-12 23:16:45,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101725111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:45,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929608192] [2021-11-12 23:16:45,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:16:45,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:45,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:45,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:45,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:16:45,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:16:45,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:16:45,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:16:45,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 23:16:45,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 23:16:45,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929608192] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:16:45,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1797896695] [2021-11-12 23:16:45,671 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-12 23:16:45,671 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:16:45,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:16:45,671 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:16:45,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:16:45,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,676 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:16:45,677 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:16:45,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:16:45,681 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_24|], 21=[|v_#valid_33|]} [2021-11-12 23:16:45,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:16:45,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:45,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:16:45,692 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:45,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:16:45,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:45,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:16:45,713 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:45,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:16:45,720 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,720 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:16:45,725 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-12 23:16:45,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:16:45,727 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 23:16:45,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-12 23:16:45,732 INFO L446 ElimStorePlain]: Different costs {6=[|v_#length_25|], 15=[|v_#valid_34|]} [2021-11-12 23:16:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,750 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 23:16:45,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-12 23:16:45,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:45,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-12 23:16:45,754 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:45,760 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,800 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-12 23:16:45,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-12 23:16:45,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:45,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 23:16:45,805 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:16:45,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-12 23:16:45,817 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,817 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:138, output treesize:139 [2021-11-12 23:16:45,829 INFO L180 QuantifierPusher]: treesize reduction 50, result has 87.2 percent of original size [2021-11-12 23:16:45,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,833 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:45,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 23:16:45,836 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:45,839 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-12 23:16:45,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 23:16:45,841 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-12 23:16:45,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-12 23:16:45,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:45,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:45,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 23:16:45,863 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,881 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 70 treesize of output 62 [2021-11-12 23:16:45,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,882 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:16:45,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-12 23:16:45,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-12 23:16:45,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:45,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-12 23:16:45,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:45,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:45,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:16:45,916 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-12 23:16:45,916 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: SIMPLIFY_QUICK does not support simplification with respect to context at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:175) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimOneRec(ElimStorePlain.java:301) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.eliminateOne(ElimStorePlain.java:607) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:16:45,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:16:45,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-11-12 23:16:45,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806858021] [2021-11-12 23:16:45,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:16:45,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 23:16:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:16:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 23:16:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:16:45,920 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:16:46,271 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2021-11-12 23:16:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:16:46,288 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-12 23:16:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:16:46,289 INFO L225 Difference]: With dead ends: 80 [2021-11-12 23:16:46,289 INFO L226 Difference]: Without dead ends: 54 [2021-11-12 23:16:46,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2021-11-12 23:16:46,290 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:16:46,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 48 Invalid, 309 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [78 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 201.32ms Time] [2021-11-12 23:16:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-12 23:16:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2021-11-12 23:16:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-11-12 23:16:46,303 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 25 [2021-11-12 23:16:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:16:46,303 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-11-12 23:16:46,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:16:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-11-12 23:16:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:16:46,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:16:46,305 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:16:46,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:16:46,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-12 23:16:46,520 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:16:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:16:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash -902501535, now seen corresponding path program 7 times [2021-11-12 23:16:46,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:16:46,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684945195] [2021-11-12 23:16:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:16:46,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:16:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:47,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:16:47,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684945195] [2021-11-12 23:16:47,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684945195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:16:47,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531379139] [2021-11-12 23:16:47,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 23:16:47,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:16:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:47,308 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:16:47,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c01fbd1-474b-40c1-bb3b-82cb6a552688/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 23:16:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-12 23:16:47,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:47,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-11-12 23:16:47,526 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-12 23:16:47,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-12 23:16:47,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-11-12 23:16:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2021-11-12 23:16:47,626 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-12 23:16:47,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 123 [2021-11-12 23:16:47,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2021-11-12 23:16:47,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 75 [2021-11-12 23:16:47,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2021-11-12 23:16:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,837 INFO L354 Elim1Store]: treesize reduction 85, result has 22.7 percent of original size [2021-11-12 23:16:47,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 118 [2021-11-12 23:16:47,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 61 [2021-11-12 23:16:47,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 68 [2021-11-12 23:16:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:47,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 31 [2021-11-12 23:16:48,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,059 INFO L354 Elim1Store]: treesize reduction 240, result has 20.3 percent of original size [2021-11-12 23:16:48,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 148 treesize of output 179 [2021-11-12 23:16:48,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 97 [2021-11-12 23:16:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,152 INFO L354 Elim1Store]: treesize reduction 106, result has 17.2 percent of original size [2021-11-12 23:16:48,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 82 treesize of output 91 [2021-11-12 23:16:48,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 34 [2021-11-12 23:16:48,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,374 INFO L354 Elim1Store]: treesize reduction 370, result has 18.7 percent of original size [2021-11-12 23:16:48,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 187 treesize of output 206 [2021-11-12 23:16:48,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 40 [2021-11-12 23:16:48,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 107 [2021-11-12 23:16:48,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,501 INFO L354 Elim1Store]: treesize reduction 60, result has 16.7 percent of original size [2021-11-12 23:16:48,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 94 [2021-11-12 23:16:48,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,877 INFO L354 Elim1Store]: treesize reduction 354, result has 17.1 percent of original size [2021-11-12 23:16:48,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 156 treesize of output 205 [2021-11-12 23:16:48,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 154 [2021-11-12 23:16:48,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 149 [2021-11-12 23:16:49,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 82 [2021-11-12 23:16:49,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,360 INFO L354 Elim1Store]: treesize reduction 627, result has 16.8 percent of original size [2021-11-12 23:16:49,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 210 treesize of output 262 [2021-11-12 23:16:49,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 85 [2021-11-12 23:16:49,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 130 [2021-11-12 23:16:49,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,627 INFO L354 Elim1Store]: treesize reduction 224, result has 17.0 percent of original size [2021-11-12 23:16:49,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 115 treesize of output 121 [2021-11-12 23:16:49,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:49,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,012 INFO L354 Elim1Store]: treesize reduction 808, result has 15.7 percent of original size [2021-11-12 23:16:50,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 225 treesize of output 292 [2021-11-12 23:16:50,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 174 [2021-11-12 23:16:50,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,255 INFO L354 Elim1Store]: treesize reduction 177, result has 17.3 percent of original size [2021-11-12 23:16:50,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 42 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 184 [2021-11-12 23:16:50,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:50,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 85 [2021-11-12 23:16:51,663 INFO L354 Elim1Store]: treesize reduction 340, result has 0.3 percent of original size [2021-11-12 23:16:51,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 180 treesize of output 100 [2021-11-12 23:16:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:16:51,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:52,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:52,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 641 treesize of output 641 [2021-11-12 23:16:52,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:52,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2021-11-12 23:16:52,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 628 treesize of output 560 [2021-11-12 23:16:52,669 INFO L354 Elim1Store]: treesize reduction 251, result has 2.0 percent of original size [2021-11-12 23:16:52,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2994817326 treesize of output 2631397221