./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sina3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9 --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 2aebf3cfbf85ca5d76e40b9ce94a108ab82985532ad1ea09b88a009b3e11ff5a --- 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-6b4ec56 [2022-11-20 21:09:36,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:09:36,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:09:36,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:09:36,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:09:36,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:09:36,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:09:36,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:09:36,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:09:36,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:09:36,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:09:36,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:09:36,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:09:36,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:09:36,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:09:36,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:09:36,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:09:36,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:09:36,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:09:36,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:09:36,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:09:36,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:09:36,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:09:36,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:09:36,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:09:36,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:09:36,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:09:36,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:09:36,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:09:36,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:09:36,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:09:36,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:09:36,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:09:36,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:09:36,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:09:36,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:09:36,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:09:36,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:09:36,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:09:36,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:09:36,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:09:36,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:09:36,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:09:36,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:09:36,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:09:36,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:09:36,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:09:36,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:09:36,399 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:09:36,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:09:36,400 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:09:36,400 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:09:36,401 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:09:36,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:09:36,401 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:09:36,402 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:09:36,402 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:09:36,402 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:09:36,402 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:09:36,403 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:09:36,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:09:36,404 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:09:36,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:09:36,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:09:36,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:09:36,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:09:36,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:09:36,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:09:36,405 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:09:36,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:09:36,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:09:36,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:09:36,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:09:36,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:09:36,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:09:36,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:09:36,408 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:09:36,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:09:36,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:09:36,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:09:36,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:09:36,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:09:36,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:09:36,409 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_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebf3cfbf85ca5d76e40b9ce94a108ab82985532ad1ea09b88a009b3e11ff5a [2022-11-20 21:09:36,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:09:36,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:09:36,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:09:36,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:09:36,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:09:36,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/array-fpi/sina3.c [2022-11-20 21:09:39,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:09:40,022 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:09:40,026 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/sv-benchmarks/c/array-fpi/sina3.c [2022-11-20 21:09:40,033 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/data/ba2fe481e/9376d96eda384173904d0f5fd0b2a576/FLAG612d0e5c8 [2022-11-20 21:09:40,048 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/data/ba2fe481e/9376d96eda384173904d0f5fd0b2a576 [2022-11-20 21:09:40,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:09:40,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:09:40,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:09:40,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:09:40,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:09:40,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516172c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40, skipping insertion in model container [2022-11-20 21:09:40,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:09:40,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:09:40,218 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_aea57ca7-f304-4675-a0a0-2ad664ad5941/sv-benchmarks/c/array-fpi/sina3.c[588,601] [2022-11-20 21:09:40,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:09:40,247 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:09:40,258 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_aea57ca7-f304-4675-a0a0-2ad664ad5941/sv-benchmarks/c/array-fpi/sina3.c[588,601] [2022-11-20 21:09:40,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:09:40,280 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:09:40,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40 WrapperNode [2022-11-20 21:09:40,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:09:40,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:09:40,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:09:40,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:09:40,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,314 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2022-11-20 21:09:40,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:09:40,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:09:40,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:09:40,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:09:40,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:09:40,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:09:40,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:09:40,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:09:40,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (1/1) ... [2022-11-20 21:09:40,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:09:40,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:09:40,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:09:40,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:09:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:09:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:09:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:09:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:09:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:09:40,511 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:09:40,513 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:09:40,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:09:40,819 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:09:40,819 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 21:09:40,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:09:40 BoogieIcfgContainer [2022-11-20 21:09:40,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:09:40,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:09:40,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:09:40,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:09:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:09:40" (1/3) ... [2022-11-20 21:09:40,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d3adeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:09:40, skipping insertion in model container [2022-11-20 21:09:40,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:09:40" (2/3) ... [2022-11-20 21:09:40,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d3adeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:09:40, skipping insertion in model container [2022-11-20 21:09:40,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:09:40" (3/3) ... [2022-11-20 21:09:40,840 INFO L112 eAbstractionObserver]: Analyzing ICFG sina3.c [2022-11-20 21:09:40,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:09:40,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:09:40,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:09:40,907 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;@2a97ad1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:09:40,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:09:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 21:09:40,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:40,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:40,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -155408202, now seen corresponding path program 1 times [2022-11-20 21:09:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:09:40,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513626577] [2022-11-20 21:09:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:09:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:09:41,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:09:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513626577] [2022-11-20 21:09:41,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513626577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:41,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:09:41,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:09:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090806037] [2022-11-20 21:09:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:41,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:09:41,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:09:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:09:41,429 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) 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) [2022-11-20 21:09:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:41,528 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2022-11-20 21:09:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:09:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 [2022-11-20 21:09:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:41,562 INFO L225 Difference]: With dead ends: 24 [2022-11-20 21:09:41,563 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 21:09:41,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:09:41,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:41,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:09:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 21:09:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 21:09:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2022-11-20 21:09:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-11-20 21:09:41,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2022-11-20 21:09:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:41,632 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-11-20 21:09:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2022-11-20 21:09:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2022-11-20 21:09:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 21:09:41,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:41,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:41,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:09:41,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1655315069, now seen corresponding path program 1 times [2022-11-20 21:09:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:09:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997478444] [2022-11-20 21:09:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:09:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:09:41,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:09:41,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997478444] [2022-11-20 21:09:41,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997478444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:41,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:09:41,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:09:41,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10397880] [2022-11-20 21:09:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:41,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:09:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:09:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:09:41,873 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) 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) [2022-11-20 21:09:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:41,940 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-11-20 21:09:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:09:41,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) 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 [2022-11-20 21:09:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:41,943 INFO L225 Difference]: With dead ends: 27 [2022-11-20 21:09:41,943 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 21:09:41,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:09:41,953 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:41,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 6 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:09:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 21:09:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-11-20 21:09:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-20 21:09:41,963 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2022-11-20 21:09:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:41,963 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-20 21:09:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) 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) [2022-11-20 21:09:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-20 21:09:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:09:41,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:41,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:09:41,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -165518152, now seen corresponding path program 1 times [2022-11-20 21:09:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:09:41,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961354303] [2022-11-20 21:09:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:41,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:09:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:09:43,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:09:43,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961354303] [2022-11-20 21:09:43,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961354303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:09:43,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758652585] [2022-11-20 21:09:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:43,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:43,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:09:43,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:09:43,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:09:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:43,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 21:09:43,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:44,059 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 11 treesize of output 7 [2022-11-20 21:09:44,084 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:09:44,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2022-11-20 21:09:44,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 21:09:44,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-20 21:09:44,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-20 21:09:44,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-11-20 21:09:44,853 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:09:44,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 38 [2022-11-20 21:09:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:09:44,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:09:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758652585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [199063170] [2022-11-20 21:09:45,361 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:09:45,361 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:09:45,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:09:45,371 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:09:45,371 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:09:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,578 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:09:45,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:09:45,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-20 21:09:45,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-11-20 21:09:45,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-11-20 21:09:45,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:45,988 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-20 21:09:45,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-11-20 21:09:46,130 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 16 treesize of output 12 [2022-11-20 21:09:46,175 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 16 treesize of output 12 [2022-11-20 21:09:46,197 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 16 treesize of output 12 [2022-11-20 21:09:46,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:46,238 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-20 21:09:46,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:09:46,312 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:09:46,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:09:46,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:46,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:46,414 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-11-20 21:09:46,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-11-20 21:09:46,524 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:09:46,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:09:46,559 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:09:47,138 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '241#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:09:47,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:09:47,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:09:47,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2022-11-20 21:09:47,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226554522] [2022-11-20 21:09:47,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:09:47,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 21:09:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 21:09:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 21:09:47,142 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:47,566 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-11-20 21:09:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 21:09:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 21:09:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:47,571 INFO L225 Difference]: With dead ends: 32 [2022-11-20 21:09:47,571 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 21:09:47,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 21:09:47,578 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:47,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 196 Invalid, 0 Unknown, 16 Unchecked, 0.3s Time] [2022-11-20 21:09:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 21:09:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-20 21:09:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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) [2022-11-20 21:09:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-20 21:09:47,600 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 13 [2022-11-20 21:09:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:47,601 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-20 21:09:47,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-20 21:09:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:09:47,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:47,603 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:47,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:47,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:47,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1789139528, now seen corresponding path program 2 times [2022-11-20 21:09:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:09:47,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052730805] [2022-11-20 21:09:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:47,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:09:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:09:47,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:09:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052730805] [2022-11-20 21:09:47,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052730805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:09:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517743372] [2022-11-20 21:09:47,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:09:47,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:47,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:09:47,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:09:47,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:09:48,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 21:09:48,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:09:48,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 21:09:48,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:09:48,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:09:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517743372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1953662225] [2022-11-20 21:09:48,107 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:09:48,108 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:09:48,108 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:09:48,108 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:09:48,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:09:48,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,293 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:09:48,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:09:48,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-11-20 21:09:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-20 21:09:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-11-20 21:09:48,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:48,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:48,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:48,673 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-20 21:09:48,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 523 treesize of output 517 [2022-11-20 21:09:48,825 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 16 treesize of output 12 [2022-11-20 21:09:48,878 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 16 treesize of output 12 [2022-11-20 21:09:48,911 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 16 treesize of output 12 [2022-11-20 21:09:48,937 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 16 treesize of output 12 [2022-11-20 21:09:48,975 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-20 21:09:48,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-20 21:09:49,048 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:09:49,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:09:49,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:49,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:49,133 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-11-20 21:09:49,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-11-20 21:09:49,238 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:09:49,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:09:49,272 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:09:49,832 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '435#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:09:49,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:09:49,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:09:49,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 21:09:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144441478] [2022-11-20 21:09:49,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:09:49,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 21:09:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 21:09:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-20 21:09:49,835 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-11-20 21:09:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:49,947 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-11-20 21:09:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:09:49,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) Word has length 14 [2022-11-20 21:09:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:49,948 INFO L225 Difference]: With dead ends: 63 [2022-11-20 21:09:49,949 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 21:09:49,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-11-20 21:09:49,950 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:49,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 21 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:09:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 21:09:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2022-11-20 21:09:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-11-20 21:09:49,956 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 14 [2022-11-20 21:09:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:49,957 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-11-20 21:09:49,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-11-20 21:09:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-11-20 21:09:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:09:49,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:49,958 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:49,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:50,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash -421291265, now seen corresponding path program 3 times [2022-11-20 21:09:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:09:50,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627862769] [2022-11-20 21:09:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:09:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:09:50,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:09:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627862769] [2022-11-20 21:09:50,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627862769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:09:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035967558] [2022-11-20 21:09:50,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 21:09:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:50,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:09:50,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:09:50,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:09:50,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 21:09:50,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:09:50,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 21:09:50,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:09:50,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:09:50,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035967558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:50,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1469954778] [2022-11-20 21:09:50,425 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:09:50,425 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:09:50,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:09:50,425 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:09:50,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:09:50,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,637 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-11-20 21:09:50,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-11-20 21:09:50,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,822 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:09:50,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:09:50,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-20 21:09:50,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:50,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-11-20 21:09:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:51,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:51,180 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-20 21:09:51,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-11-20 21:09:51,321 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 16 treesize of output 12 [2022-11-20 21:09:51,379 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 16 treesize of output 12 [2022-11-20 21:09:51,410 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 16 treesize of output 12 [2022-11-20 21:09:51,447 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-20 21:09:51,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-20 21:09:51,531 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:09:51,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:09:51,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:51,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:09:51,653 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-11-20 21:09:51,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-11-20 21:09:51,750 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:09:51,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:09:51,786 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:09:52,186 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '676#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:09:52,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:09:52,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:09:52,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 21:09:52,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805305323] [2022-11-20 21:09:52,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:09:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 21:09:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 21:09:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-20 21:09:52,188 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-11-20 21:09:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:52,330 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-20 21:09:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:09:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) Word has length 14 [2022-11-20 21:09:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:52,331 INFO L225 Difference]: With dead ends: 37 [2022-11-20 21:09:52,331 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 21:09:52,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:09:52,333 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:52,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 21 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:09:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 21:09:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2022-11-20 21:09:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-20 21:09:52,337 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2022-11-20 21:09:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:52,337 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-20 21:09:52,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-11-20 21:09:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-20 21:09:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 21:09:52,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:52,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:52,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:52,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:52,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1101372854, now seen corresponding path program 4 times [2022-11-20 21:09:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:09:52,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331344796] [2022-11-20 21:09:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:52,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:09:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:09:54,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:09:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331344796] [2022-11-20 21:09:54,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331344796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:09:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522894652] [2022-11-20 21:09:54,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 21:09:54,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:54,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:09:54,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:09:54,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:09:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:54,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 21:09:54,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:54,543 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 11 treesize of output 7 [2022-11-20 21:09:54,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 21:09:54,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 21:09:54,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 21:09:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,873 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 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-20 21:09:54,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:54,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 21:09:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 21:09:55,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2022-11-20 21:09:55,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2022-11-20 21:09:55,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,723 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-20 21:09:55,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 66 [2022-11-20 21:09:55,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:09:55,928 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:09:55,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2022-11-20 21:09:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:09:55,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:11:41,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522894652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:11:41,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912002183] [2022-11-20 21:11:41,692 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:11:41,692 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:41,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:41,693 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:41,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:41,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,907 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-11-20 21:11:41,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-11-20 21:11:41,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,957 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:11:41,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-11-20 21:11:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:41,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,162 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:11:42,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:11:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-11-20 21:11:42,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:42,495 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-20 21:11:42,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-11-20 21:11:42,633 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 16 treesize of output 12 [2022-11-20 21:11:42,701 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 11 treesize of output 7 [2022-11-20 21:11:42,724 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 16 treesize of output 12 [2022-11-20 21:11:42,764 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-20 21:11:42,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-20 21:11:42,837 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:11:42,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:11:42,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:42,925 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-11-20 21:11:42,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-11-20 21:11:43,030 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:11:43,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:11:43,063 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:43,898 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '917#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:11:43,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:43,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:11:43,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2022-11-20 21:11:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942177403] [2022-11-20 21:11:43,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:43,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 21:11:43,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 21:11:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2024, Unknown=36, NotChecked=0, Total=2256 [2022-11-20 21:11:43,903 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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) [2022-11-20 21:11:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:46,894 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2022-11-20 21:11:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 21:11:46,895 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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 17 [2022-11-20 21:11:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:46,897 INFO L225 Difference]: With dead ends: 47 [2022-11-20 21:11:46,897 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 21:11:46,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 110.1s TimeCoverageRelationStatistics Valid=240, Invalid=2375, Unknown=37, NotChecked=0, Total=2652 [2022-11-20 21:11:46,899 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:46,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2022-11-20 21:11:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 21:11:46,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2022-11-20 21:11:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:11:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-11-20 21:11:46,912 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 17 [2022-11-20 21:11:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:46,912 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-11-20 21:11:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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) [2022-11-20 21:11:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-11-20 21:11:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 21:11:46,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:46,914 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:46,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:47,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 21:11:47,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:11:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash -108509294, now seen corresponding path program 5 times [2022-11-20 21:11:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:47,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61205875] [2022-11-20 21:11:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:47,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:47,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61205875] [2022-11-20 21:11:47,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61205875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:47,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223907551] [2022-11-20 21:11:47,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:11:47,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:47,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:47,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:47,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 21:11:47,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:11:47,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:11:47,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 21:11:47,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:47,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:47,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223907551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:11:47,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321326334] [2022-11-20 21:11:47,525 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:11:47,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:47,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:47,526 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:47,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:47,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,721 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-11-20 21:11:47,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-11-20 21:11:47,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,773 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:11:47,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-11-20 21:11:47,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:47,988 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:11:47,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:11:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-11-20 21:11:48,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:48,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:48,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:48,328 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-20 21:11:48,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 523 treesize of output 517 [2022-11-20 21:11:48,469 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 16 treesize of output 12 [2022-11-20 21:11:48,514 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 11 treesize of output 7 [2022-11-20 21:11:48,540 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 16 treesize of output 12 [2022-11-20 21:11:48,568 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 16 treesize of output 12 [2022-11-20 21:11:48,617 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-20 21:11:48,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-20 21:11:48,690 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:11:48,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:11:48,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:48,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:48,781 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-11-20 21:11:48,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-11-20 21:11:48,890 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:11:48,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:11:48,923 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:49,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1198#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:11:49,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:49,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:11:49,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-20 21:11:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071169566] [2022-11-20 21:11:49,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:49,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 21:11:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 21:11:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-20 21:11:49,553 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:11:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:49,771 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2022-11-20 21:11:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:11:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 21:11:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:49,776 INFO L225 Difference]: With dead ends: 84 [2022-11-20 21:11:49,776 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 21:11:49,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 16 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-11-20 21:11:49,777 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:49,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 36 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:11:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 21:11:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-11-20 21:11:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:11:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-11-20 21:11:49,789 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 18 [2022-11-20 21:11:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:49,789 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-11-20 21:11:49,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:11:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-11-20 21:11:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 21:11:49,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:49,790 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:49,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 21:11:49,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 21:11:49,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:11:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash -423339907, now seen corresponding path program 6 times [2022-11-20 21:11:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:49,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844368664] [2022-11-20 21:11:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:50,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:50,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844368664] [2022-11-20 21:11:50,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844368664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:50,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496551701] [2022-11-20 21:11:50,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 21:11:50,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:50,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:50,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:50,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 21:11:50,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 21:11:50,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:11:50,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 21:11:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:50,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:11:50,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496551701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:11:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80333084] [2022-11-20 21:11:50,386 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:11:50,386 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:11:50,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:11:50,387 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:11:50,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:50,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,602 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-11-20 21:11:50,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-11-20 21:11:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,782 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:11:50,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:11:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-20 21:11:50,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:50,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-11-20 21:11:51,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:51,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:51,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:51,093 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-20 21:11:51,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 523 treesize of output 517 [2022-11-20 21:11:51,231 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 16 treesize of output 12 [2022-11-20 21:11:51,266 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 11 treesize of output 7 [2022-11-20 21:11:51,291 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 16 treesize of output 12 [2022-11-20 21:11:51,314 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 16 treesize of output 12 [2022-11-20 21:11:51,361 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-20 21:11:51,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-20 21:11:51,446 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:11:51,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:11:51,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:51,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:51,526 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-11-20 21:11:51,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-11-20 21:11:51,620 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:11:51,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:11:51,653 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:52,247 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1539#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:11:52,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:52,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:11:52,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-20 21:11:52,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297661997] [2022-11-20 21:11:52,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:52,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 21:11:52,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:52,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 21:11:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-20 21:11:52,249 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:11:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:52,495 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-11-20 21:11:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 21:11:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 21:11:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:52,496 INFO L225 Difference]: With dead ends: 67 [2022-11-20 21:11:52,496 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 21:11:52,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-20 21:11:52,498 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 77 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:52,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 59 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:11:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 21:11:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-11-20 21:11:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 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) [2022-11-20 21:11:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-20 21:11:52,508 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 18 [2022-11-20 21:11:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:52,508 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-20 21:11:52,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:11:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-20 21:11:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 21:11:52,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:11:52,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:52,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 21:11:52,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:52,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:11:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:11:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1748691183, now seen corresponding path program 1 times [2022-11-20 21:11:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:11:52,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008473396] [2022-11-20 21:11:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:11:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:11:55,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:11:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008473396] [2022-11-20 21:11:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008473396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:11:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144131842] [2022-11-20 21:11:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:11:55,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:55,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:11:55,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:11:55,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 21:11:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:11:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-20 21:11:55,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:11:55,374 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:11:55,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2022-11-20 21:11:55,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:11:55,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 21:11:55,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-20 21:11:55,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 21:11:55,642 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 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-20 21:11:55,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-20 21:11:55,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:55,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:11:55,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2022-11-20 21:11:56,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-11-20 21:11:56,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:11:56,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-20 21:11:56,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-11-20 21:11:56,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2022-11-20 21:11:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:11:56,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:11:56,944 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (select (store v_ArrVal_420 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ c_~N~0 1))) is different from false [2022-11-20 21:11:56,957 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ c_~N~0 1))) is different from false [2022-11-20 21:11:57,093 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse2 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2022-11-20 21:11:57,250 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse4)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2022-11-20 21:11:57,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:11:57,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 285 treesize of output 169 [2022-11-20 21:11:57,279 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_420 (Array Int Int))) (or (not (= (select v_arrayElimArr_1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) 1)) (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 .cse4 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ c_~N~0 1)))) is different from false [2022-11-20 21:11:57,672 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (.cse0 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (forall ((v_arrayElimArr_1 (Array Int Int))) (or (not (= (select v_arrayElimArr_1 .cse0) 1)) (forall ((v_ArrVal_420 (Array Int Int))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) (let ((.cse1 (store (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse5 (select (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse4 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse5)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) .cse0) (select (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (forall ((v_arrayElimArr_1 (Array Int Int))) (or (forall ((v_ArrVal_420 (Array Int Int))) (< (let ((.cse8 (store (let ((.cse9 (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse12 (select (select .cse9 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse11 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse12)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|) .cse0) (select (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (not (= (select v_arrayElimArr_1 .cse0) 1)))))) is different from false [2022-11-20 21:12:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-20 21:12:07,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144131842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:12:07,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [587105129] [2022-11-20 21:12:07,977 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-20 21:12:07,977 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:07,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:07,978 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:07,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:08,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,340 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-11-20 21:12:08,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-11-20 21:12:08,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,411 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:12:08,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-11-20 21:12:08,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,820 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:12:08,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:12:08,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:08,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-11-20 21:12:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:09,196 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-20 21:12:09,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-11-20 21:12:09,310 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 16 treesize of output 12 [2022-11-20 21:12:09,351 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 16 treesize of output 12 [2022-11-20 21:12:09,379 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 16 treesize of output 12 [2022-11-20 21:12:09,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,478 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-20 21:12:09,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:12:09,639 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:12:09,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:12:09,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:09,819 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-11-20 21:12:09,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-11-20 21:12:10,032 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:12:10,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:12:10,171 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:12,281 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1885#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:12:12,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:12,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:12:12,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 44 [2022-11-20 21:12:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358034803] [2022-11-20 21:12:12,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:12,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 21:12:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 21:12:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1677, Unknown=48, NotChecked=534, Total=2450 [2022-11-20 21:12:12,285 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 44 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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) [2022-11-20 21:12:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:13,829 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-20 21:12:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 21:12:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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 20 [2022-11-20 21:12:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:13,830 INFO L225 Difference]: With dead ends: 40 [2022-11-20 21:12:13,831 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 21:12:13,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=214, Invalid=1923, Unknown=49, NotChecked=570, Total=2756 [2022-11-20 21:12:13,833 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:13,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 87 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 290 Invalid, 0 Unknown, 211 Unchecked, 0.7s Time] [2022-11-20 21:12:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 21:12:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-20 21:12:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2022-11-20 21:12:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-20 21:12:13,838 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 20 [2022-11-20 21:12:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:13,839 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 21:12:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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) [2022-11-20 21:12:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-20 21:12:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 21:12:13,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:13,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:13,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:14,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:14,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:12:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1643001400, now seen corresponding path program 7 times [2022-11-20 21:12:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40121613] [2022-11-20 21:12:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:17,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40121613] [2022-11-20 21:12:17,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40121613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688651027] [2022-11-20 21:12:17,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 21:12:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:17,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:17,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 21:12:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:17,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-20 21:12:17,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:12:17,868 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 11 treesize of output 7 [2022-11-20 21:12:17,887 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:12:17,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2022-11-20 21:12:17,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 21:12:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:17,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-20 21:12:18,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-20 21:12:18,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-11-20 21:12:18,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-11-20 21:12:18,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:18,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-11-20 21:12:19,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:19,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-11-20 21:12:19,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:19,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 67 [2022-11-20 21:12:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:19,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:19,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2022-11-20 21:12:20,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2022-11-20 21:12:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:20,853 INFO L321 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2022-11-20 21:12:20,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 88 [2022-11-20 21:12:21,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:21,933 INFO L321 Elim1Store]: treesize reduction 354, result has 25.3 percent of original size [2022-11-20 21:12:21,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 141 treesize of output 206 [2022-11-20 21:12:26,921 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:12:26,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 36 [2022-11-20 21:12:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:12:27,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:12:29,716 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_522 Int) (v_ArrVal_519 Int) (|v_ULTIMATE.start_main_~i~0#1_293| Int) (|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (= (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_294|)))) is different from false [2022-11-20 21:12:40,965 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (|v_ULTIMATE.start_main_~i~0#1_299| Int) (v_ArrVal_519 Int) (|v_ULTIMATE.start_main_~i~0#1_293| Int) (v_ArrVal_507 Int) (|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (= (select (store (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse1 .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_299|)))) is different from false [2022-11-20 21:12:43,058 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_522 Int) (|v_ULTIMATE.start_main_~i~0#1_300| Int) (v_ArrVal_510 Int) (|v_ULTIMATE.start_main_~i~0#1_299| Int) (v_ArrVal_519 Int) (|v_ULTIMATE.start_main_~i~0#1_293| Int) (v_ArrVal_507 Int) (|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (= (select (store (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse1 .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_300|)))) is different from false [2022-11-20 21:12:47,893 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (let ((.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) (select (store (store (let ((.cse5 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse1 .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (select (store (store (let ((.cse16 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse13 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse14 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse12 .cse13 .cse14 .cse15)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|))))))))) is different from false [2022-11-20 21:12:50,047 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))))) (let ((.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (select (store (store (let ((.cse5 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse1 .cse2 (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ |c_ULTIMATE.start_main_~i~0#1| 4))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (select (store (store (let ((.cse16 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse14 (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse15 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse13 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 .cse13 (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse14 .cse15)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)))))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|))))))) is different from false [2022-11-20 21:12:52,309 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))))) (let ((.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) (select (store (store (let ((.cse5 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse1 (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (select (store (store (let ((.cse16 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse14 (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse15 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse12 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse13 .cse14 .cse15)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ 5 |c_ULTIMATE.start_main_~i~0#1|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|))))))))))) is different from false [2022-11-20 21:12:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-11-20 21:12:52,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688651027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:12:52,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1512809258] [2022-11-20 21:12:52,392 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:12:52,393 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:12:52,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:12:52,393 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:12:52,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:12:52,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,457 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:12:52,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-11-20 21:12:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,831 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:12:52,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:12:52,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-11-20 21:12:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:52,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-11-20 21:12:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:53,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:12:53,207 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-20 21:12:53,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-11-20 21:12:53,327 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 16 treesize of output 12 [2022-11-20 21:12:53,363 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 11 treesize of output 7 [2022-11-20 21:12:53,383 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 16 treesize of output 12 [2022-11-20 21:12:53,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:53,456 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-20 21:12:53,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:12:53,576 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:12:53,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:12:53,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:53,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:12:53,704 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-11-20 21:12:53,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-11-20 21:12:53,904 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:12:53,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:12:53,937 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:12:55,327 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2184#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:12:55,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:12:55,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:12:55,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 52 [2022-11-20 21:12:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692334469] [2022-11-20 21:12:55,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:12:55,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-20 21:12:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:12:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-20 21:12:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2337, Unknown=7, NotChecked=618, Total=3192 [2022-11-20 21:12:55,331 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:12:59,158 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-20 21:12:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 21:12:59,159 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 21:12:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:12:59,159 INFO L225 Difference]: With dead ends: 46 [2022-11-20 21:12:59,159 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 21:12:59,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=265, Invalid=2722, Unknown=7, NotChecked=666, Total=3660 [2022-11-20 21:12:59,160 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:12:59,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 127 Unchecked, 0.3s Time] [2022-11-20 21:12:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 21:12:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2022-11-20 21:12:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-11-20 21:12:59,173 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 21 [2022-11-20 21:12:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:12:59,174 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-20 21:12:59,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:12:59,174 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2022-11-20 21:12:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 21:12:59,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:12:59,175 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:12:59,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 21:12:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:59,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:12:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:12:59,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1201976888, now seen corresponding path program 8 times [2022-11-20 21:12:59,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:12:59,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786121352] [2022-11-20 21:12:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:12:59,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:12:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:12:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:12:59,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:12:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786121352] [2022-11-20 21:12:59,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786121352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:12:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392044877] [2022-11-20 21:12:59,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:12:59,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:12:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:12:59,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:12:59,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 21:12:59,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:12:59,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:12:59,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 21:12:59,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:13:00,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:13:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:13:00,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392044877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:13:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1066286781] [2022-11-20 21:13:00,517 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 21:13:00,517 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:13:00,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:13:00,518 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:13:00,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:13:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,585 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 21:13:00,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-11-20 21:13:00,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,921 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-11-20 21:13:00,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-11-20 21:13:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:00,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,294 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-11-20 21:13:01,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-11-20 21:13:01,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-11-20 21:13:01,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:01,613 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-20 21:13:01,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-11-20 21:13:01,711 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 16 treesize of output 12 [2022-11-20 21:13:01,754 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 11 treesize of output 7 [2022-11-20 21:13:01,776 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 16 treesize of output 12 [2022-11-20 21:13:01,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:01,849 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-20 21:13:01,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:13:01,974 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-20 21:13:01,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-20 21:13:02,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:02,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:02,110 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-11-20 21:13:02,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-11-20 21:13:02,293 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-11-20 21:13:02,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-11-20 21:13:02,326 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:13:03,259 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2504#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#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| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:13:03,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:13:03,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:13:03,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-11-20 21:13:03,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057484248] [2022-11-20 21:13:03,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:13:03,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 21:13:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 21:13:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-11-20 21:13:03,262 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-11-20 21:13:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:04,651 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2022-11-20 21:13:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 21:13:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 21:13:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:04,652 INFO L225 Difference]: With dead ends: 98 [2022-11-20 21:13:04,652 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 21:13:04,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=310, Invalid=1670, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 21:13:04,654 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 181 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:04,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 152 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 21:13:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 21:13:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2022-11-20 21:13:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 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) [2022-11-20 21:13:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-20 21:13:04,667 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2022-11-20 21:13:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:04,667 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-20 21:13:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-11-20 21:13:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-20 21:13:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 21:13:04,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:04,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:04,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 21:13:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 21:13:04,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:13:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1212573997, now seen corresponding path program 2 times [2022-11-20 21:13:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:04,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465511561] [2022-11-20 21:13:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:04,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:13:09,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:09,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465511561] [2022-11-20 21:13:09,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465511561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:09,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811154522] [2022-11-20 21:13:09,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:13:09,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:09,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:09,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:09,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aea57ca7-f304-4675-a0a0-2ad664ad5941/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 21:13:09,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 21:13:09,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:13:09,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-20 21:13:09,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:09,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:09,749 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:13:09,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 11 [2022-11-20 21:13:10,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 21:13:10,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:10,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 21:13:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:10,829 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-20 21:13:10,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 21:13:11,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 21:13:11,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 21:13:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 21:13:11,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,563 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 0 case distinctions, treesize of input 38 treesize of output 39 [2022-11-20 21:13:11,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 51 [2022-11-20 21:13:11,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:12,059 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-20 21:13:12,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 79 [2022-11-20 21:13:13,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:13,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:13:13,625 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:13:13,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 40 [2022-11-20 21:13:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 21:13:13,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:13:27,915 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:27,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 240 treesize of output 198 [2022-11-20 21:13:27,948 WARN L837 $PredicateComparison]: unable to prove that (or (not (< 1 c_~N~0)) (forall ((v_ArrVal_684 Int) (v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_363| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_2))) (let ((.cse3 (store (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_arrayElimArr_2 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse3 .cse1 (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse3))) (+ (select (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_363|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_684)) (.cse2 (+ c_~N~0 1))) (or (= (select .cse0 .cse1) .cse2) (< (+ |v_ULTIMATE.start_main_~i~0#1_363| 1) c_~N~0) (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse2))))))) is different from false [2022-11-20 21:13:30,267 WARN L837 $PredicateComparison]: unable to prove that (or (not (< 1 c_~N~0)) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_674 Int) (v_ArrVal_684 Int) (v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_363| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_674)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_2))) (let ((.cse3 (store (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_arrayElimArr_2 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse3 .cse1 (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse3))) (+ (select (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_363|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_684)) (.cse2 (+ c_~N~0 1))) (or (= (select .cse0 .cse1) .cse2) (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0) (< (+ |v_ULTIMATE.start_main_~i~0#1_363| 1) c_~N~0) (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse2))))))) is different from false [2022-11-20 21:13:30,319 WARN L837 $PredicateComparison]: unable to prove that (or (not (< 1 c_~N~0)) (forall ((v_ArrVal_674 Int) (v_ArrVal_684 Int) (v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_363| Int) (|v_ULTIMATE.start_main_~i~0#1_370| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (+ (* |v_ULTIMATE.start_main_~i~0#1_370| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_674)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_2))) (let ((.cse3 (store (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_arrayElimArr_2 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse3 .cse2 (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse3))) (+ (select (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_363|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_684)) (.cse1 (+ c_~N~0 1))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_370| 1) c_~N~0) (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_363| 1) c_~N~0) (= (select .cse0 .cse2) .cse1)))))) is different from false [2022-11-20 21:13:30,430 INFO L321 Elim1Store]: treesize reduction 43, result has 57.4 percent of original size [2022-11-20 21:13:30,430 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 636 treesize of output 261 [2022-11-20 21:13:30,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:30,490 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 3929 treesize of output 3645 [2022-11-20 21:13:30,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:30,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4187 treesize of output 3697 [2022-11-20 21:13:32,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2022-11-20 21:13:32,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:32,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 127 treesize of output 131 [2022-11-20 21:13:32,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,598 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 21:13:32,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 210 treesize of output 1 [2022-11-20 21:13:32,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-11-20 21:13:32,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 79 [2022-11-20 21:13:32,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:13:32,724 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 21:13:32,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 284 treesize of output 1 [2022-11-20 21:13:42,474 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 21:13:42,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:13:42,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 3487 treesize of output 4101