./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7 --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 efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:21:04,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:21:04,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:21:04,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:21:04,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:21:04,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:21:04,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:21:04,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:21:04,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:21:04,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:21:04,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:21:04,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:21:04,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:21:04,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:21:04,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:21:04,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:21:04,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:21:04,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:21:04,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:21:04,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:21:04,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:21:04,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:21:04,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:21:04,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:21:04,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:21:04,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:21:04,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:21:04,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:21:04,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:21:04,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:21:04,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:21:04,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:21:04,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:21:04,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:21:04,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:21:04,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:21:04,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:21:04,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:21:04,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:21:04,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:21:04,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:21:04,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:21:04,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:21:04,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:21:04,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:21:04,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:21:04,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:21:04,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:21:04,427 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:21:04,428 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:21:04,428 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:21:04,428 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:21:04,430 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:21:04,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:21:04,430 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:21:04,430 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:21:04,431 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:21:04,431 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:21:04,431 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:21:04,431 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:21:04,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:21:04,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:21:04,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:21:04,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:21:04,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:21:04,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:21:04,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:21:04,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:21:04,436 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:21:04,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:21:04,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:21:04,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:21:04,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:21:04,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:21:04,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:04,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:21:04,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:21:04,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:21:04,439 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:21:04,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:21:04,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:21:04,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:21:04,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:21:04,440 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_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 [2021-11-25 20:21:04,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:21:04,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:21:04,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:21:04,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:21:04,788 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:21:04,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2021-11-25 20:21:04,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/data/a1334eb55/8dbe63e4b9e14f48aea0de732b5218dd/FLAG8f515ce31 [2021-11-25 20:21:05,438 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:21:05,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2021-11-25 20:21:05,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/data/a1334eb55/8dbe63e4b9e14f48aea0de732b5218dd/FLAG8f515ce31 [2021-11-25 20:21:05,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/data/a1334eb55/8dbe63e4b9e14f48aea0de732b5218dd [2021-11-25 20:21:05,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:21:05,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:21:05,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:05,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:21:05,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:21:05,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:05" (1/1) ... [2021-11-25 20:21:05,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c051f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:05, skipping insertion in model container [2021-11-25 20:21:05,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:05" (1/1) ... [2021-11-25 20:21:05,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:21:05,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:21:05,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2021-11-25 20:21:06,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:06,070 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:21:06,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2021-11-25 20:21:06,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:06,150 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:21:06,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06 WrapperNode [2021-11-25 20:21:06,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:06,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:06,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:21:06,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:21:06,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,222 INFO L137 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2021-11-25 20:21:06,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:06,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:21:06,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:21:06,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:21:06,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:21:06,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:21:06,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:21:06,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:21:06,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (1/1) ... [2021-11-25 20:21:06,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:06,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:21:06,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:21:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:21:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:21:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:21:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:21:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:21:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:21:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:21:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:21:06,482 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:21:06,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:21:06,675 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:21:06,727 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:21:06,727 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 20:21:06,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:06 BoogieIcfgContainer [2021-11-25 20:21:06,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:21:06,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:21:06,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:21:06,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:21:06,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:21:05" (1/3) ... [2021-11-25 20:21:06,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c009d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:06, skipping insertion in model container [2021-11-25 20:21:06,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:06" (2/3) ... [2021-11-25 20:21:06,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c009d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:06, skipping insertion in model container [2021-11-25 20:21:06,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:06" (3/3) ... [2021-11-25 20:21:06,766 INFO L111 eAbstractionObserver]: Analyzing ICFG add-3-n-u.c [2021-11-25 20:21:06,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:21:06,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:21:06,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:21:06,835 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 [2021-11-25 20:21:06,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:21:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 20:21:06,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:06,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:06,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1242475547, now seen corresponding path program 1 times [2021-11-25 20:21:06,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:06,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864777970] [2021-11-25 20:21:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:06,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:07,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:07,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646399228] [2021-11-25 20:21:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:07,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:07,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:07,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:21:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:07,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:21:07,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:07,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:21:07,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:07,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864777970] [2021-11-25 20:21:07,294 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:21:07,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646399228] [2021-11-25 20:21:07,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646399228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:07,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:07,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:21:07,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937104809] [2021-11-25 20:21:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:07,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:21:07,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:21:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:07,352 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:07,428 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2021-11-25 20:21:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:21:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 20:21:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:07,443 INFO L225 Difference]: With dead ends: 29 [2021-11-25 20:21:07,444 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 20:21:07,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:21:07,456 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:07,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:21:07,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 20:21:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-25 20:21:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2021-11-25 20:21:07,516 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 8 [2021-11-25 20:21:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:07,517 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-11-25 20:21:07,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2021-11-25 20:21:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 20:21:07,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:07,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:07,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 20:21:07,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash 103004432, now seen corresponding path program 1 times [2021-11-25 20:21:07,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:07,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964729974] [2021-11-25 20:21:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:07,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:07,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:07,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760873316] [2021-11-25 20:21:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:07,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:07,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:07,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:21:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:07,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:21:07,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:07,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:21:07,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964729974] [2021-11-25 20:21:07,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:21:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760873316] [2021-11-25 20:21:07,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760873316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:07,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:07,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:21:07,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123280181] [2021-11-25 20:21:07,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:07,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:21:07,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:21:07,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:21:07,899 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-11-25 20:21:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:08,042 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2021-11-25 20:21:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:21:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2021-11-25 20:21:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:08,044 INFO L225 Difference]: With dead ends: 40 [2021-11-25 20:21:08,044 INFO L226 Difference]: Without dead ends: 27 [2021-11-25 20:21:08,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:21:08,047 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:08,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 11 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:21:08,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-25 20:21:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2021-11-25 20:21:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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) [2021-11-25 20:21:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-11-25 20:21:08,071 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2021-11-25 20:21:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:08,072 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-25 20:21:08,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-11-25 20:21:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2021-11-25 20:21:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 20:21:08,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:08,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:08,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:08,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:08,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1848574842, now seen corresponding path program 1 times [2021-11-25 20:21:08,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132594185] [2021-11-25 20:21:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:08,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:08,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:08,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142166073] [2021-11-25 20:21:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:08,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:08,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:08,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:08,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:21:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:08,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:21:08,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:08,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:21:08,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132594185] [2021-11-25 20:21:08,414 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:21:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142166073] [2021-11-25 20:21:08,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142166073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:08,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:08,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:21:08,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597866490] [2021-11-25 20:21:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:08,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:21:08,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:21:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:21:08,417 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:08,513 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2021-11-25 20:21:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:21:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 20:21:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:08,515 INFO L225 Difference]: With dead ends: 43 [2021-11-25 20:21:08,516 INFO L226 Difference]: Without dead ends: 27 [2021-11-25 20:21:08,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:21:08,523 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:08,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:21:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-25 20:21:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-11-25 20:21:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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) [2021-11-25 20:21:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2021-11-25 20:21:08,536 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2021-11-25 20:21:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:08,536 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2021-11-25 20:21:08,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-11-25 20:21:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:21:08,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:08,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:08,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:08,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:08,738 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2114319717, now seen corresponding path program 1 times [2021-11-25 20:21:08,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:08,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276029454] [2021-11-25 20:21:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:08,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:08,750 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:08,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007847088] [2021-11-25 20:21:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:08,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:08,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:08,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:08,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:21:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:08,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:21:08,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:08,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:09,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:09,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276029454] [2021-11-25 20:21:09,021 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:21:09,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007847088] [2021-11-25 20:21:09,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007847088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:09,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1678090289] [2021-11-25 20:21:09,053 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 20:21:09,054 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:09,058 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:09,065 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:09,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:21:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,358 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:21:09,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:21:09,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2021-11-25 20:21:09,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2021-11-25 20:21:09,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:09,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:10,055 INFO L354 Elim1Store]: treesize reduction 172, result has 15.7 percent of original size [2021-11-25 20:21:10,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 470 treesize of output 438 [2021-11-25 20:21:10,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:10,303 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:10,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:11,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:11,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:11,262 INFO L354 Elim1Store]: treesize reduction 168, result has 17.6 percent of original size [2021-11-25 20:21:11,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 299 treesize of output 279 [2021-11-25 20:21:11,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:11,463 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:11,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:11,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:11,614 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:11,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:11,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:11,713 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:11,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:11,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:11,799 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:11,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:11,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:11,962 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:11,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:12,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:12,061 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:12,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:12,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:12,151 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:12,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:12,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:12,531 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:12,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:12,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:12,596 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:12,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:12,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:12,697 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:12,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:12,705 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:21:13,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1678090289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:13,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:21:13,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 11 [2021-11-25 20:21:13,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778749168] [2021-11-25 20:21:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:13,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:21:13,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:21:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:21:13,422 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:13,913 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2021-11-25 20:21:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:21:13,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:21:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:13,915 INFO L225 Difference]: With dead ends: 42 [2021-11-25 20:21:13,915 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 20:21:13,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:21:13,917 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:13,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 9 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:21:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 20:21:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2021-11-25 20:21:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-11-25 20:21:13,930 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2021-11-25 20:21:13,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:13,930 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-11-25 20:21:13,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-11-25 20:21:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 20:21:13,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:13,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:13,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:14,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:14,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:14,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash -475134270, now seen corresponding path program 1 times [2021-11-25 20:21:14,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:14,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227967594] [2021-11-25 20:21:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:14,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:14,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611510156] [2021-11-25 20:21:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:14,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:14,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:21:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:14,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:21:14,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:21:14,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:21:14,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:14,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227967594] [2021-11-25 20:21:14,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:21:14,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611510156] [2021-11-25 20:21:14,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611510156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:14,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [494643522] [2021-11-25 20:21:14,360 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-25 20:21:14,360 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:14,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:14,361 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:14,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:21:14,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,527 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:21:14,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:21:14,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2021-11-25 20:21:14,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2021-11-25 20:21:14,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:14,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:14,906 INFO L354 Elim1Store]: treesize reduction 172, result has 15.7 percent of original size [2021-11-25 20:21:14,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 472 treesize of output 440 [2021-11-25 20:21:15,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:15,026 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:15,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:15,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:15,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:15,334 INFO L354 Elim1Store]: treesize reduction 144, result has 18.2 percent of original size [2021-11-25 20:21:15,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 287 treesize of output 271 [2021-11-25 20:21:15,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:15,462 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:15,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:15,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:15,536 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:15,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:15,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:15,613 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:15,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:15,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:15,663 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:15,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:15,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:15,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:15,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,055 INFO L354 Elim1Store]: treesize reduction 144, result has 18.2 percent of original size [2021-11-25 20:21:16,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 278 treesize of output 262 [2021-11-25 20:21:16,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,159 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,222 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,344 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:16,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:16,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,438 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,518 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,587 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,666 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,741 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:16,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:16,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,820 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,870 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:16,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:16,990 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:16,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:17,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,061 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:17,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:17,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,141 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:17,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:17,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,221 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:17,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:17,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,268 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:17,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:17,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,370 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:17,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:17,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,480 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:17,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:17,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,768 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:17,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:17,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:17,907 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:17,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:18,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,163 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:18,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:18,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,272 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:18,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:18,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,459 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:18,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:18,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,590 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:18,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:18,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,816 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:18,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:18,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:18,940 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:18,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:19,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,018 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,093 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,139 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,249 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,305 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,364 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,442 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,500 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,549 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,622 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:19,670 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:19,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:19,677 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:21:20,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '711#(and (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* (* |ULTIMATE.start_main_~p~0#1| 4) |ULTIMATE.start_main_~n~0#1|))))) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* (* |ULTIMATE.start_main_~p~0#1| 4) |ULTIMATE.start_main_~n~0#1|)))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem8#1| (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* (* |ULTIMATE.start_main_~p~0#1| 4) |ULTIMATE.start_main_~n~0#1|))))) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:21:20,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:21:20,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:21:20,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-25 20:21:20,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845675502] [2021-11-25 20:21:20,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:21:20,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:21:20,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:21:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:21:20,307 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:20,442 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2021-11-25 20:21:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:21:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-25 20:21:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:20,444 INFO L225 Difference]: With dead ends: 64 [2021-11-25 20:21:20,445 INFO L226 Difference]: Without dead ends: 44 [2021-11-25 20:21:20,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:21:20,446 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:20,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 18 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:21:20,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-25 20:21:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-11-25 20:21:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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) [2021-11-25 20:21:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-11-25 20:21:20,462 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2021-11-25 20:21:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:20,462 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-11-25 20:21:20,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-11-25 20:21:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 20:21:20,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:20,464 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:20,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:20,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:20,680 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:20,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash 795485591, now seen corresponding path program 2 times [2021-11-25 20:21:20,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:20,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649567600] [2021-11-25 20:21:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:20,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:20,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:20,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570095244] [2021-11-25 20:21:20,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:21:20,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:20,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:20,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:20,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:21:20,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:21:20,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:21:20,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:21:20,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 20:21:20,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 20:21:20,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649567600] [2021-11-25 20:21:20,954 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:21:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570095244] [2021-11-25 20:21:20,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570095244] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:20,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1754385086] [2021-11-25 20:21:20,960 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-25 20:21:20,960 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:20,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:20,961 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:20,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:21:20,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:20,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:20,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,087 INFO L354 Elim1Store]: treesize reduction 178, result has 22.3 percent of original size [2021-11-25 20:21:21,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 76 [2021-11-25 20:21:21,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,249 INFO L354 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2021-11-25 20:21:21,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2021-11-25 20:21:21,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2021-11-25 20:21:21,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:21,541 INFO L354 Elim1Store]: treesize reduction 172, result has 15.7 percent of original size [2021-11-25 20:21:21,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 470 treesize of output 438 [2021-11-25 20:21:21,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:21,653 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:21,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:21,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:21,878 INFO L354 Elim1Store]: treesize reduction 168, result has 17.6 percent of original size [2021-11-25 20:21:21,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 299 treesize of output 279 [2021-11-25 20:21:21,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:21,988 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:21,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,074 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:22,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:22,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,139 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,187 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:22,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:21:22,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,459 INFO L354 Elim1Store]: treesize reduction 168, result has 17.6 percent of original size [2021-11-25 20:21:22,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 290 treesize of output 270 [2021-11-25 20:21:22,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,533 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,650 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,729 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,883 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,938 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:22,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:22,992 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:22,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:23,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,093 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:23,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:23,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,146 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:23,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:23,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,207 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:23,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:23,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,267 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:23,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:23,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,318 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:23,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:23,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,472 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:23,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:23,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,604 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:23,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:23,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,830 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:23,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:23,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:23,934 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:23,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:24,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,086 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:24,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:24,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,217 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:24,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:24,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,410 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:24,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:24,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,527 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:24,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:24,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,768 INFO L354 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2021-11-25 20:21:24,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2021-11-25 20:21:24,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,879 INFO L354 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2021-11-25 20:21:24,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2021-11-25 20:21:24,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:24,998 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:24,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:25,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,071 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,118 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,226 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,275 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,327 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:25,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:25,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,402 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,444 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,484 INFO L354 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2021-11-25 20:21:25,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2021-11-25 20:21:25,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,545 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:21:25,599 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-11-25 20:21:25,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2021-11-25 20:21:25,603 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:21:26,233 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1047#(and (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* (* |ULTIMATE.start_main_~p~0#1| 4) |ULTIMATE.start_main_~n~0#1|))))) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* (* |ULTIMATE.start_main_~p~0#1| 4) |ULTIMATE.start_main_~n~0#1|)))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem8#1| (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* (* |ULTIMATE.start_main_~p~0#1| 4) |ULTIMATE.start_main_~n~0#1|))))) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2021-11-25 20:21:26,234 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:21:26,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:21:26,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-25 20:21:26,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375712916] [2021-11-25 20:21:26,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:21:26,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:21:26,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:21:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:21:26,236 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 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) [2021-11-25 20:21:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:26,442 INFO L93 Difference]: Finished difference Result 167 states and 219 transitions. [2021-11-25 20:21:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:21:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 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 24 [2021-11-25 20:21:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:26,453 INFO L225 Difference]: With dead ends: 167 [2021-11-25 20:21:26,453 INFO L226 Difference]: Without dead ends: 140 [2021-11-25 20:21:26,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:21:26,456 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 194 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:26,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 28 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:21:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-25 20:21:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2021-11-25 20:21:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 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) [2021-11-25 20:21:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2021-11-25 20:21:26,513 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 24 [2021-11-25 20:21:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:26,514 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2021-11-25 20:21:26,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 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) [2021-11-25 20:21:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2021-11-25 20:21:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 20:21:26,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:26,521 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:26,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:26,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:21:26,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2031543819, now seen corresponding path program 3 times [2021-11-25 20:21:26,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958616337] [2021-11-25 20:21:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:26,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:26,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:21:26,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353330955] [2021-11-25 20:21:26,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:21:26,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:26,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:26,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:26,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b1ca95-94f3-4311-affd-d79c818c88c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process