./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh --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 bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:01:04,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:01:04,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:01:04,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:01:04,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:01:04,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:01:04,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:01:04,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:01:04,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:01:04,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:01:04,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:01:04,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:01:04,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:01:04,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:01:04,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:01:04,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:01:04,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:01:04,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:01:04,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:01:04,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:01:04,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:01:04,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:01:04,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:01:04,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:01:04,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:01:04,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:01:04,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:01:04,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:01:04,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:01:04,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:01:04,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:01:04,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:01:04,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:01:04,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:01:04,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:01:04,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:01:04,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:01:04,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:01:04,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:01:04,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:01:04,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:01:04,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:01:04,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:01:04,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:01:04,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:01:04,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:01:04,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:01:04,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:01:04,270 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:01:04,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:01:04,270 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:01:04,271 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:01:04,271 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:01:04,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:01:04,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:01:04,271 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:01:04,271 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:01:04,272 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:01:04,272 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:01:04,272 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:01:04,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:01:04,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:01:04,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:01:04,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:01:04,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:01:04,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:01:04,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:01:04,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:01:04,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:01:04,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:01:04,275 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:01:04,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:01:04,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:01:04,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:01:04,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:01:04,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:01:04,276 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:01:04,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:01:04,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:01:04,276 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:01:04,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:01:04,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:01:04,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:01:04,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 [2022-12-14 14:01:04,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:01:04,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:01:04,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:01:04,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:01:04,476 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:01:04,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-12-14 14:01:07,078 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:01:07,192 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:01:07,192 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-12-14 14:01:07,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/data/f37c5881c/6881d2531c6047618d0321272fb5bcb2/FLAG57c2e557c [2022-12-14 14:01:07,207 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/data/f37c5881c/6881d2531c6047618d0321272fb5bcb2 [2022-12-14 14:01:07,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:01:07,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:01:07,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:01:07,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:01:07,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:01:07,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8f6031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07, skipping insertion in model container [2022-12-14 14:01:07,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:01:07,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:01:07,330 WARN L237 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_d96a5b64-2266-4686-93ec-6e68bfbe6919/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-12-14 14:01:07,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:01:07,350 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:01:07,358 WARN L237 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_d96a5b64-2266-4686-93ec-6e68bfbe6919/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-12-14 14:01:07,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:01:07,374 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:01:07,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07 WrapperNode [2022-12-14 14:01:07,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:01:07,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:01:07,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:01:07,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:01:07,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,398 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-12-14 14:01:07,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:01:07,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:01:07,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:01:07,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:01:07,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:01:07,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:01:07,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:01:07,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:01:07,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (1/1) ... [2022-12-14 14:01:07,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:01:07,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:07,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:01:07,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:01:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:01:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:01:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:01:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:01:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:01:07,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:01:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:01:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:01:07,539 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:01:07,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:01:07,667 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:01:07,695 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:01:07,696 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 14:01:07,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:01:07 BoogieIcfgContainer [2022-12-14 14:01:07,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:01:07,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:01:07,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:01:07,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:01:07,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:01:07" (1/3) ... [2022-12-14 14:01:07,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292f5dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:01:07, skipping insertion in model container [2022-12-14 14:01:07,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:01:07" (2/3) ... [2022-12-14 14:01:07,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292f5dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:01:07, skipping insertion in model container [2022-12-14 14:01:07,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:01:07" (3/3) ... [2022-12-14 14:01:07,704 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-2-n-u.c [2022-12-14 14:01:07,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:01:07,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:01:07,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:01:07,760 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71bb5e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:01:07,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:01:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:01:07,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:01:07,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:01:07,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:01:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:01:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash -317945424, now seen corresponding path program 1 times [2022-12-14 14:01:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:01:07,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748532336] [2022-12-14 14:01:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:01:07,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:01:07,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151215688] [2022-12-14 14:01:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:07,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:01:07,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:01:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:01:07,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:01:07,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:01:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:01:07,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:01:07,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:01:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748532336] [2022-12-14 14:01:07,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:01:07,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151215688] [2022-12-14 14:01:07,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151215688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:01:07,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:01:07,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:01:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564419990] [2022-12-14 14:01:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:01:07,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:01:07,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:01:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:01:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:01:08,003 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:01:08,044 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2022-12-14 14:01:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:01:08,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 14:01:08,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:01:08,051 INFO L225 Difference]: With dead ends: 23 [2022-12-14 14:01:08,052 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 14:01:08,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:01:08,056 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:01:08,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:01:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 14:01:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-12-14 14:01:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-12-14 14:01:08,078 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 7 [2022-12-14 14:01:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:01:08,079 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-12-14 14:01:08,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2022-12-14 14:01:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:01:08,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:01:08,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:01:08,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:01:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 14:01:08,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:01:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:01:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash -810555472, now seen corresponding path program 1 times [2022-12-14 14:01:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:01:08,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848534222] [2022-12-14 14:01:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:08,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:01:08,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:01:08,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199613737] [2022-12-14 14:01:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:08,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:08,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:08,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:01:08,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:01:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:01:08,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:01:08,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:01:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:01:08,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:01:08,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:01:08,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848534222] [2022-12-14 14:01:08,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:01:08,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199613737] [2022-12-14 14:01:08,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199613737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:01:08,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:01:08,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:01:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077725597] [2022-12-14 14:01:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:01:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:01:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:01:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:01:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:01:08,547 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:01:08,585 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2022-12-14 14:01:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:01:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 14:01:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:01:08,586 INFO L225 Difference]: With dead ends: 31 [2022-12-14 14:01:08,586 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 14:01:08,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:01:08,588 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:01:08,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:01:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 14:01:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2022-12-14 14:01:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2022-12-14 14:01:08,592 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2022-12-14 14:01:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:01:08,592 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-12-14 14:01:08,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2022-12-14 14:01:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:01:08,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:01:08,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:01:08,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:01:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 14:01:08,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:01:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:01:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2013744500, now seen corresponding path program 1 times [2022-12-14 14:01:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:01:08,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993619840] [2022-12-14 14:01:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:01:08,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:01:08,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577442776] [2022-12-14 14:01:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:08,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:08,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:08,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:01:08,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:01:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:01:08,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:01:08,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:01:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:01:08,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:01:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:01:09,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:01:09,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993619840] [2022-12-14 14:01:09,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:01:09,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577442776] [2022-12-14 14:01:09,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577442776] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:01:09,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263733937] [2022-12-14 14:01:09,030 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 14:01:09,030 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:01:09,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:01:09,036 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:01:09,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:01:09,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,140 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-12-14 14:01:09,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 14:01:09,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,231 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 14:01:09,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 14:01:09,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-12-14 14:01:09,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:09,660 INFO L321 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2022-12-14 14:01:09,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 357 treesize of output 340 [2022-12-14 14:01:09,767 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 14:01:09,799 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 14:01:09,898 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:01:10,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1263733937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:01:10,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:01:10,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2022-12-14 14:01:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931837012] [2022-12-14 14:01:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:01:10,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:01:10,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:01:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:01:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:01:10,358 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2022-12-14 14:01:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:01:10,661 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-12-14 14:01:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:01:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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 [2022-12-14 14:01:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:01:10,662 INFO L225 Difference]: With dead ends: 31 [2022-12-14 14:01:10,662 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 14:01:10,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:01:10,663 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:01:10,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:01:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 14:01:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2022-12-14 14:01:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-12-14 14:01:10,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2022-12-14 14:01:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:01:10,670 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-12-14 14:01:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2022-12-14 14:01:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-12-14 14:01:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:01:10,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:01:10,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:01:10,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 14:01:10,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:10,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:01:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:01:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -180606378, now seen corresponding path program 1 times [2022-12-14 14:01:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:01:10,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548582107] [2022-12-14 14:01:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:01:10,878 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:01:10,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676434644] [2022-12-14 14:01:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:10,879 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:01:10,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:01:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:01:10,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:01:10,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:01:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:01:10,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:01:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:01:10,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:01:10,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548582107] [2022-12-14 14:01:10,962 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:01:10,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676434644] [2022-12-14 14:01:10,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676434644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:01:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105978430] [2022-12-14 14:01:10,965 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 14:01:10,965 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:01:10,965 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:01:10,966 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:01:10,966 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:01:10,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:10,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,027 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-12-14 14:01:11,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 14:01:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,099 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 14:01:11,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 14:01:11,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:01:11,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:01:11,372 INFO L321 Elim1Store]: treesize reduction 70, result has 27.8 percent of original size [2022-12-14 14:01:11,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 349 treesize of output 342 [2022-12-14 14:01:11,544 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 14:01:11,587 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 14:01:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 14:01:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,691 INFO L321 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2022-12-14 14:01:11,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 138 treesize of output 149 [2022-12-14 14:01:11,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:11,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 14:01:11,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:11,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:11,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:11,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 14:01:11,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:11,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:11,973 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:01:12,208 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '426#(and (= |ULTIMATE.start_main_#t~mem7#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (- 4)) (- 4) (* |ULTIMATE.start_main_~n~0#1| 4) (* (* |ULTIMATE.start_main_~n~0#1| 4) (+ (- 1) (* (- 1) |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~m~0#1|))))) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem6#1|) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem7#1| |ULTIMATE.start_main_#t~mem6#1|) 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 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 14:01:12,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:01:12,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:01:12,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 14:01:12,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338553735] [2022-12-14 14:01:12,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:01:12,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:01:12,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:01:12,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:01:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:01:12,209 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:01:12,268 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-12-14 14:01:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:01:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 14:01:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:01:12,269 INFO L225 Difference]: With dead ends: 52 [2022-12-14 14:01:12,269 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 14:01:12,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=122, Unknown=0, NotChecked=0, Total=210 [2022-12-14 14:01:12,269 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 78 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:01:12,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 15 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:01:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 14:01:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-12-14 14:01:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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) [2022-12-14 14:01:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-12-14 14:01:12,277 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 13 [2022-12-14 14:01:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:01:12,278 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-12-14 14:01:12,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-12-14 14:01:12,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 14:01:12,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:01:12,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:01:12,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:01:12,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:12,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:01:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:01:12,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1418857202, now seen corresponding path program 2 times [2022-12-14 14:01:12,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:01:12,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855789366] [2022-12-14 14:01:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:12,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:01:12,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:01:12,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458457118] [2022-12-14 14:01:12,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:01:12,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:12,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:12,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:01:12,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:01:12,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 14:01:12,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:01:12,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:01:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:01:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:01:12,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:01:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:01:12,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:01:12,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855789366] [2022-12-14 14:01:12,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 14:01:12,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458457118] [2022-12-14 14:01:12,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458457118] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:01:12,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129682031] [2022-12-14 14:01:12,607 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 14:01:12,607 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:01:12,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:01:12,607 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:01:12,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:01:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:12,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:12,656 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 14:01:12,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 14:01:12,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:12,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:12,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 47 [2022-12-14 14:01:12,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:12,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:01:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:12,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:01:12,890 INFO L321 Elim1Store]: treesize reduction 70, result has 27.8 percent of original size [2022-12-14 14:01:12,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 349 treesize of output 342 [2022-12-14 14:01:13,017 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 14:01:13,052 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-14 14:01:13,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 14:01:13,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,156 INFO L321 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2022-12-14 14:01:13,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 138 treesize of output 149 [2022-12-14 14:01:13,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:01:13,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 42 [2022-12-14 14:01:13,450 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:01:13,732 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '692#(and (= |ULTIMATE.start_main_#t~mem7#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (- 4)) (- 4) (* |ULTIMATE.start_main_~n~0#1| 4) (* (* |ULTIMATE.start_main_~n~0#1| 4) (+ (- 1) (* (- 1) |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~m~0#1|))))) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) |ULTIMATE.start_main_#t~mem6#1|) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem7#1| |ULTIMATE.start_main_#t~mem6#1|) 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 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 14:01:13,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:01:13,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:01:13,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-12-14 14:01:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450785487] [2022-12-14 14:01:13,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:01:13,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:01:13,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:01:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:01:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:01:13,734 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:13,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:01:13,782 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2022-12-14 14:01:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:01:13,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 14:01:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:01:13,784 INFO L225 Difference]: With dead ends: 72 [2022-12-14 14:01:13,784 INFO L226 Difference]: Without dead ends: 49 [2022-12-14 14:01:13,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:01:13,785 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:01:13,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:01:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-14 14:01:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-12-14 14:01:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 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) [2022-12-14 14:01:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2022-12-14 14:01:13,798 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 19 [2022-12-14 14:01:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:01:13,798 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2022-12-14 14:01:13,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:01:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-12-14 14:01:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 14:01:13,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:01:13,798 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:01:13,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:01:13,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:14,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:01:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:01:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2031697394, now seen corresponding path program 3 times [2022-12-14 14:01:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:01:14,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760549638] [2022-12-14 14:01:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:01:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:01:14,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 14:01:14,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306393811] [2022-12-14 14:01:14,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:01:14,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:01:14,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:01:14,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:01:14,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d96a5b64-2266-4686-93ec-6e68bfbe6919/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:01:14,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:01:14,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:01:14,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-14 14:01:14,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:01:14,140 INFO L321 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2022-12-14 14:01:14,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 14:01:14,184 INFO L321 Elim1Store]: treesize reduction 234, result has 20.7 percent of original size [2022-12-14 14:01:14,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 80 [2022-12-14 14:01:14,311 INFO L321 Elim1Store]: treesize reduction 494, result has 17.1 percent of original size [2022-12-14 14:01:14,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 124 [2022-12-14 14:01:14,476 INFO L321 Elim1Store]: treesize reduction 712, result has 13.9 percent of original size [2022-12-14 14:01:14,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 135 [2022-12-14 14:01:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-12-14 14:01:14,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:01:26,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:01:26,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64350392 treesize of output 60814528 [2022-12-14 14:02:02,036 WARN L233 SmtUtils]: Spent 36.02s on a formula simplification that was a NOOP. DAG size: 1697 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 14:05:56,194 WARN L233 SmtUtils]: Spent 3.31m on a formula simplification. DAG size of input: 1686 DAG size of output: 1687 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 14:11:59,142 WARN L233 SmtUtils]: Spent 5.45m on a formula simplification. DAG size of input: 1684 DAG size of output: 1686 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 14:13:10,575 WARN L233 SmtUtils]: Spent 20.38s on a formula simplification that was a NOOP. DAG size: 1656 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)