./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy9_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy9_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aab03c22d13215fab0d6755eff6eea090232335ae63c67c9d83313131cbb4c89 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:40:11,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:40:11,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:40:11,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:40:11,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:40:11,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:40:11,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:40:11,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:40:11,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:40:11,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:40:11,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:40:11,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:40:11,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:40:11,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:40:11,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:40:11,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:40:11,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:40:11,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:40:11,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:40:11,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:40:11,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:40:11,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:40:11,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:40:11,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:40:11,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:40:11,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:40:11,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:40:11,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:40:11,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:40:11,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:40:11,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:40:11,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:40:11,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:40:11,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:40:11,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:40:11,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:40:11,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:40:11,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:40:11,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:40:11,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:40:11,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:40:11,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:40:11,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:40:11,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:40:11,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:40:11,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:40:11,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:40:11,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:40:11,394 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:40:11,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:40:11,394 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:40:11,394 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:40:11,395 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:40:11,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:40:11,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:40:11,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:40:11,395 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:40:11,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:40:11,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:40:11,396 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:40:11,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:40:11,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:40:11,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:40:11,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:40:11,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:40:11,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:40:11,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:40:11,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:40:11,398 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:40:11,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:40:11,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:40:11,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:40:11,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:40:11,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:40:11,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:40:11,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:40:11,400 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:40:11,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:40:11,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:40:11,400 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:40:11,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:40:11,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:40:11,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:40:11,401 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_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aab03c22d13215fab0d6755eff6eea090232335ae63c67c9d83313131cbb4c89 [2022-12-14 06:40:11,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:40:11,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:40:11,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:40:11,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:40:11,611 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:40:11,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-examples/standard_copy9_ground-2.i [2022-12-14 06:40:14,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:40:14,351 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:40:14,351 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/sv-benchmarks/c/array-examples/standard_copy9_ground-2.i [2022-12-14 06:40:14,357 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/data/db3b87f3e/6a7208af5d1d4784b445eb7de094f189/FLAG8e9302b65 [2022-12-14 06:40:14,760 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/data/db3b87f3e/6a7208af5d1d4784b445eb7de094f189 [2022-12-14 06:40:14,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:40:14,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:40:14,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:40:14,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:40:14,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:40:14,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:14,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c026e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14, skipping insertion in model container [2022-12-14 06:40:14,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:14,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:40:14,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:40:14,928 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_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/sv-benchmarks/c/array-examples/standard_copy9_ground-2.i[816,829] [2022-12-14 06:40:14,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:40:14,958 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:40:14,969 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_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/sv-benchmarks/c/array-examples/standard_copy9_ground-2.i[816,829] [2022-12-14 06:40:14,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:40:14,997 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:40:14,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14 WrapperNode [2022-12-14 06:40:14,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:40:14,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:40:14,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:40:14,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:40:15,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,026 INFO L138 Inliner]: procedures = 16, calls = 58, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 192 [2022-12-14 06:40:15,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:40:15,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:40:15,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:40:15,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:40:15,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:40:15,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:40:15,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:40:15,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:40:15,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (1/1) ... [2022-12-14 06:40:15,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:40:15,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:15,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:40:15,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:40:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:40:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:40:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:40:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:40:15,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:40:15,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:40:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:40:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:40:15,160 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:40:15,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:40:15,336 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:40:15,382 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:40:15,382 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-14 06:40:15,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:40:15 BoogieIcfgContainer [2022-12-14 06:40:15,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:40:15,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:40:15,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:40:15,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:40:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:40:14" (1/3) ... [2022-12-14 06:40:15,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686263fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:40:15, skipping insertion in model container [2022-12-14 06:40:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:40:14" (2/3) ... [2022-12-14 06:40:15,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686263fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:40:15, skipping insertion in model container [2022-12-14 06:40:15,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:40:15" (3/3) ... [2022-12-14 06:40:15,391 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-2.i [2022-12-14 06:40:15,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:40:15,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:40:15,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:40:15,442 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;@652274a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:40:15,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:40:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 06:40:15,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:15,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:15,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1813374179, now seen corresponding path program 1 times [2022-12-14 06:40:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:15,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692723470] [2022-12-14 06:40:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:15,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:40:15,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:15,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692723470] [2022-12-14 06:40:15,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692723470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:15,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:15,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:40:15,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617978614] [2022-12-14 06:40:15,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:15,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:40:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:40:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:40:15,754 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:15,828 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2022-12-14 06:40:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:40:15,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 [2022-12-14 06:40:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:15,835 INFO L225 Difference]: With dead ends: 33 [2022-12-14 06:40:15,835 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 06:40:15,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:40:15,839 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:15,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:40:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 06:40:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 06:40:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2022-12-14 06:40:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2022-12-14 06:40:15,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 14 [2022-12-14 06:40:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:15,862 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2022-12-14 06:40:15,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2022-12-14 06:40:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 06:40:15,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:15,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:15,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:40:15,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1669124400, now seen corresponding path program 1 times [2022-12-14 06:40:15,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:15,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490746407] [2022-12-14 06:40:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:40:15,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:15,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490746407] [2022-12-14 06:40:15,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490746407] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:15,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552813499] [2022-12-14 06:40:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:15,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:15,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:40:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:16,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:40:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 06:40:16,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:40:16,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552813499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:16,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:40:16,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-14 06:40:16,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019891789] [2022-12-14 06:40:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:16,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:40:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:40:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:40:16,073 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:16,140 INFO L93 Difference]: Finished difference Result 39 states and 66 transitions. [2022-12-14 06:40:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:40:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 06:40:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:16,141 INFO L225 Difference]: With dead ends: 39 [2022-12-14 06:40:16,141 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 06:40:16,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:40:16,143 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:16,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:40:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 06:40:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 06:40:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2022-12-14 06:40:16,149 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 15 [2022-12-14 06:40:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:16,150 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2022-12-14 06:40:16,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2022-12-14 06:40:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 06:40:16,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:16,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:16,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-14 06:40:16,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 06:40:16,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2035806513, now seen corresponding path program 1 times [2022-12-14 06:40:16,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:16,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408546443] [2022-12-14 06:40:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:40:16,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:16,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408546443] [2022-12-14 06:40:16,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408546443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:16,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783424079] [2022-12-14 06:40:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:16,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:16,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:16,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:16,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:40:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:16,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:40:16,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:40:16,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:40:16,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783424079] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:16,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [493661765] [2022-12-14 06:40:16,635 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:16,635 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:16,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:16,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:16,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:16,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,288 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:40:17,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:40:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:17,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:18,127 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:18,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:18,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:18,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:19,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:19,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:19,032 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 06:40:19,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 978 treesize of output 977 [2022-12-14 06:40:19,877 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 [2022-12-14 06:40:19,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:19,904 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:19,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:19,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:19,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:19,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:19,957 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:19,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:20,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,014 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,057 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:20,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:20,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,130 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:20,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:20,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,216 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,247 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:20,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:20,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,336 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:20,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:20,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,420 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,448 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:20,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,502 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:20,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:20,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,560 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,598 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,672 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:20,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:20,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,720 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,748 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:20,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,796 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:20,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:20,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,854 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,897 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:20,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:20,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,941 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:20,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:20,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:20,998 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:20,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:21,019 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:21,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:21,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:21,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:21,101 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:21,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:21,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:21,186 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:21,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:21,215 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:21,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:21,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:21,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:21,288 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:21,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:21,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:21,367 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:21,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:21,386 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:21,738 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '415#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:21,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:21,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:21,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 06:40:21,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049445371] [2022-12-14 06:40:21,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:21,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:40:21,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:40:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:40:21,740 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:21,797 INFO L93 Difference]: Finished difference Result 52 states and 74 transitions. [2022-12-14 06:40:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:40:21,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 06:40:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:21,798 INFO L225 Difference]: With dead ends: 52 [2022-12-14 06:40:21,798 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 06:40:21,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:40:21,800 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:21,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:40:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 06:40:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 06:40:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-12-14 06:40:21,803 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-12-14 06:40:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:21,803 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-12-14 06:40:21,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-12-14 06:40:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 06:40:21,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:21,804 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:21,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 06:40:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:22,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 61706972, now seen corresponding path program 2 times [2022-12-14 06:40:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:22,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102022949] [2022-12-14 06:40:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 06:40:22,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102022949] [2022-12-14 06:40:22,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102022949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:22,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89715065] [2022-12-14 06:40:22,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:40:22,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:22,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:22,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:22,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:40:22,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 06:40:22,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:40:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:40:22,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 06:40:22,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 06:40:22,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89715065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:22,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2052609822] [2022-12-14 06:40:22,233 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:22,233 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:22,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:22,233 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:22,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:22,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,768 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:40:22,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:40:22,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:23,472 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:23,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:23,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:23,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:23,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:23,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:24,001 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 06:40:24,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 988 treesize of output 976 [2022-12-14 06:40:24,287 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 [2022-12-14 06:40:24,317 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:24,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:24,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,382 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:24,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:24,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,442 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,471 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,517 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:24,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:24,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,564 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,587 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:24,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:24,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,654 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:24,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:24,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,710 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,735 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:24,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,779 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:24,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:24,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,819 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,842 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:24,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:24,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,910 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:24,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:24,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,971 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:24,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:24,994 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:24,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:25,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,039 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:25,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:25,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,102 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:25,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,144 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:25,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:25,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,190 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:25,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:25,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,236 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:25,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,258 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:25,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:25,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,296 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:25,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:25,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,332 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:25,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,355 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:25,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:25,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,444 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:25,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:25,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:25,574 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:25,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:25,588 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:25,882 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '731#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:25,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:25,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:25,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 06:40:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451867939] [2022-12-14 06:40:25,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:40:25,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:40:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:40:25,883 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:25,985 INFO L93 Difference]: Finished difference Result 77 states and 122 transitions. [2022-12-14 06:40:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:40:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 06:40:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:25,986 INFO L225 Difference]: With dead ends: 77 [2022-12-14 06:40:25,987 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 06:40:25,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:40:25,988 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:25,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:40:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 06:40:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 06:40:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-12-14 06:40:25,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2022-12-14 06:40:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:25,994 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-12-14 06:40:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-12-14 06:40:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 06:40:25,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:25,995 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:25,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:40:26,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:26,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -320642205, now seen corresponding path program 3 times [2022-12-14 06:40:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:26,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277878566] [2022-12-14 06:40:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:26,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277878566] [2022-12-14 06:40:26,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277878566] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957943721] [2022-12-14 06:40:26,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 06:40:26,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:26,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:26,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:26,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:40:26,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 06:40:26,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:40:26,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:40:26,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:26,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:26,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957943721] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:26,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [256000614] [2022-12-14 06:40:26,563 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:26,564 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:26,564 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:26,564 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:26,564 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:26,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:26,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,026 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:40:27,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:40:27,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,716 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:27,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:27,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:27,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:28,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:28,240 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 06:40:28,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 978 treesize of output 977 [2022-12-14 06:40:28,832 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 [2022-12-14 06:40:28,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:28,853 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:28,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:28,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:28,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:28,896 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:28,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:28,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:28,943 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:28,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:28,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:28,985 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:28,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,030 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,076 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,099 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:29,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,141 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,207 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,259 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:29,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,318 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,359 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,388 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:29,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,435 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,482 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,511 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:29,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,561 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,625 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,676 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,729 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,774 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,799 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:29,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,851 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:29,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:29,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,896 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:29,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:29,926 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:29,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:29,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:29,993 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:29,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:30,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:30,071 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:30,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:30,086 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:30,458 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1319#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:30,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:30,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:30,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 06:40:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743560708] [2022-12-14 06:40:30,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:30,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:40:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:30,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:40:30,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:40:30,460 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:30,513 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2022-12-14 06:40:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 06:40:30,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 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 54 [2022-12-14 06:40:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:30,514 INFO L225 Difference]: With dead ends: 112 [2022-12-14 06:40:30,514 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 06:40:30,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:40:30,516 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:30,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:40:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 06:40:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-12-14 06:40:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-12-14 06:40:30,522 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 54 [2022-12-14 06:40:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:30,522 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-12-14 06:40:30,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-12-14 06:40:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 06:40:30,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:30,523 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:30,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:40:30,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:30,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash 496239683, now seen corresponding path program 4 times [2022-12-14 06:40:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:30,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060468966] [2022-12-14 06:40:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:30,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060468966] [2022-12-14 06:40:30,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060468966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469438849] [2022-12-14 06:40:30,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 06:40:30,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:30,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:30,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:30,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:40:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:31,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 06:40:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:31,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:31,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469438849] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:31,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002755298] [2022-12-14 06:40:31,255 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:31,255 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:31,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:31,256 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:31,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:31,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,043 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:32,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 76 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 67 [2022-12-14 06:40:32,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:32,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:32,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:32,606 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 06:40:32,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 978 treesize of output 977 [2022-12-14 06:40:33,218 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 [2022-12-14 06:40:33,237 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:33,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:33,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,306 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:33,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:33,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,362 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:33,385 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:33,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:33,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,468 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:33,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:33,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,554 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:33,574 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:33,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:33,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,644 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:33,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:33,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,746 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:33,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,772 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:33,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,820 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:33,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:33,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,870 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:33,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,897 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:33,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,944 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:33,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:33,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:33,996 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:33,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:34,023 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:34,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:34,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,108 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:34,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:34,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,184 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:34,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:34,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,207 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:34,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:34,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,249 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:34,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:34,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,288 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:34,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:34,309 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:34,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:34,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,389 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:34,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:34,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,451 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:34,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:34,477 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:34,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:34,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,554 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:34,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:34,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:34,604 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:34,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:34,621 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:34,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2037#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:34,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:34,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:34,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-14 06:40:34,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735656501] [2022-12-14 06:40:34,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:34,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 06:40:34,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 06:40:34,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 06:40:34,913 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:34,985 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2022-12-14 06:40:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 06:40:34,985 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 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 60 [2022-12-14 06:40:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:34,986 INFO L225 Difference]: With dead ends: 124 [2022-12-14 06:40:34,986 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 06:40:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 06:40:34,988 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:34,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:40:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 06:40:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 06:40:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-12-14 06:40:34,994 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 60 [2022-12-14 06:40:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:34,995 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-12-14 06:40:34,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-12-14 06:40:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:40:34,996 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:34,996 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:35,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 06:40:35,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:35,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:35,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2015809027, now seen corresponding path program 5 times [2022-12-14 06:40:35,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:35,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224126112] [2022-12-14 06:40:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:35,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 06:40:35,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:35,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224126112] [2022-12-14 06:40:35,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224126112] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902086434] [2022-12-14 06:40:35,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:40:35,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:35,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:35,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:35,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 06:40:36,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 06:40:36,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:40:36,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:40:36,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-14 06:40:36,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-14 06:40:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902086434] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [185928873] [2022-12-14 06:40:36,457 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:36,457 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:36,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:36,457 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:36,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:36,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:36,954 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:40:36,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:40:37,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,764 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:37,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:37,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:37,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:38,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:38,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:38,289 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 06:40:38,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 978 treesize of output 977 [2022-12-14 06:40:38,899 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 [2022-12-14 06:40:38,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:38,917 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:38,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:38,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:38,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:38,963 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:38,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:39,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,016 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,062 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,104 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:39,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:39,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,158 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,185 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:39,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,246 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:39,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:39,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,330 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,376 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:39,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:39,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,429 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:39,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:39,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,503 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,520 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:39,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:39,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,587 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:39,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:39,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,653 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,673 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:39,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,716 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:39,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:39,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,775 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,830 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,881 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:39,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:39,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,918 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:39,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:39,938 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:39,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:39,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:39,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:40,006 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:40,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:40,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:40,067 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:40,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:40,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:40,085 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:40,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:40,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:40,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:40,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:40,127 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:40,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:40,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:40,180 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:40,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:40,204 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:40,580 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2885#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:40,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:40,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:40,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2022-12-14 06:40:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135982934] [2022-12-14 06:40:40,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 06:40:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 06:40:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 06:40:40,582 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:40,797 INFO L93 Difference]: Finished difference Result 179 states and 253 transitions. [2022-12-14 06:40:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 06:40:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 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 72 [2022-12-14 06:40:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:40,798 INFO L225 Difference]: With dead ends: 179 [2022-12-14 06:40:40,798 INFO L226 Difference]: Without dead ends: 129 [2022-12-14 06:40:40,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 06:40:40,800 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:40,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:40:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-14 06:40:40,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-12-14 06:40:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0859375) internal successors, (139), 128 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2022-12-14 06:40:40,809 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 72 [2022-12-14 06:40:40,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:40,809 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2022-12-14 06:40:40,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2022-12-14 06:40:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 06:40:40,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:40,811 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:40,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 06:40:41,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 06:40:41,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1091535152, now seen corresponding path program 6 times [2022-12-14 06:40:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:41,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320681] [2022-12-14 06:40:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:41,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:40:41,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320681] [2022-12-14 06:40:41,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601622864] [2022-12-14 06:40:41,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 06:40:41,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:41,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:41,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 06:40:41,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 06:40:41,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:40:41,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 06:40:41,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:40:42,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:40:42,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601622864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:42,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [110226649] [2022-12-14 06:40:42,535 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:42,535 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:42,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:42,535 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:42,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:42,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:42,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,229 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:43,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:43,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 76 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 67 [2022-12-14 06:40:43,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:43,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:43,775 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 06:40:43,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 988 treesize of output 976 [2022-12-14 06:40:44,092 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 [2022-12-14 06:40:44,115 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:44,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:44,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,172 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:44,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:44,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,237 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,259 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:44,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:44,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,331 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:44,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:44,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,418 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,437 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:44,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,479 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:44,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:44,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,538 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,579 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:44,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,616 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:44,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:44,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,659 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,682 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:44,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:44,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,744 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:44,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:44,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,798 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,819 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:44,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,867 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:44,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:44,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,930 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:44,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:44,975 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:44,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:45,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:45,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,019 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:45,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:45,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,058 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:45,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:45,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,081 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:45,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:45,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,125 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:45,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:45,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,159 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:45,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:45,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,179 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:45,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:45,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,219 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:45,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:45,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:45,278 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:45,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:45,301 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:46,712 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4299#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:46,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:46,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:46,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-12-14 06:40:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24974092] [2022-12-14 06:40:46,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:46,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 06:40:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 06:40:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 06:40:46,714 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:46,798 INFO L93 Difference]: Finished difference Result 258 states and 302 transitions. [2022-12-14 06:40:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 06:40:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 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 127 [2022-12-14 06:40:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:46,799 INFO L225 Difference]: With dead ends: 258 [2022-12-14 06:40:46,799 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 06:40:46,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 317 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2828 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 06:40:46,802 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:46,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:40:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 06:40:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-12-14 06:40:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0718954248366013) internal successors, (164), 153 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2022-12-14 06:40:46,809 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 127 [2022-12-14 06:40:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:46,809 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2022-12-14 06:40:46,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2022-12-14 06:40:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-14 06:40:46,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:46,810 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:46,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 06:40:47,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:47,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1785543683, now seen corresponding path program 7 times [2022-12-14 06:40:47,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:47,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820383644] [2022-12-14 06:40:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:47,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:40:48,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:48,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820383644] [2022-12-14 06:40:48,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820383644] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:40:48,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654815895] [2022-12-14 06:40:48,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 06:40:48,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:48,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:40:48,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:40:48,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 06:40:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:49,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 06:40:49,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:40:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:40:49,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:40:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:40:51,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654815895] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:40:51,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007998946] [2022-12-14 06:40:51,088 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:40:51,088 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:40:51,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:40:51,089 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:40:51,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:40:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,523 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:40:51,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:40:51,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:51,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:52,098 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:40:52,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:40:52,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:52,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:40:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:52,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:52,618 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 06:40:52,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 978 treesize of output 977 [2022-12-14 06:40:53,400 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 [2022-12-14 06:40:53,428 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:53,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:53,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,506 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:53,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:53,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,577 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:53,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:53,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,604 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:53,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:53,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,663 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:53,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:53,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,701 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:53,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:53,722 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:53,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:53,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,802 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:53,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:53,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,863 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:53,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:53,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,887 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:53,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:53,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:53,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,928 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:53,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:53,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:53,971 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:53,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:53,994 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:53,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:54,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,056 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:40:54,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:40:54,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,114 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,136 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:54,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:54,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,190 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:54,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:54,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,255 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,277 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:54,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,318 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:54,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:54,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,352 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,373 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:40:54,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:40:54,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,439 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:40:54,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:40:54,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,490 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,513 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:40:54,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,554 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:40:54,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:40:54,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:40:54,610 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:40:54,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:40:54,634 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:40:55,502 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6121#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:40:55,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:40:55,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:40:55,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2022-12-14 06:40:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015794387] [2022-12-14 06:40:55,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:40:55,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 06:40:55,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 06:40:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 06:40:55,506 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:55,657 INFO L93 Difference]: Finished difference Result 308 states and 377 transitions. [2022-12-14 06:40:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 06:40:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 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 152 [2022-12-14 06:40:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:55,659 INFO L225 Difference]: With dead ends: 308 [2022-12-14 06:40:55,659 INFO L226 Difference]: Without dead ends: 204 [2022-12-14 06:40:55,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 389 SyntacticMatches, 11 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 06:40:55,664 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:55,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:40:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-12-14 06:40:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-12-14 06:40:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0541871921182266) internal successors, (214), 203 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 214 transitions. [2022-12-14 06:40:55,670 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 214 transitions. Word has length 152 [2022-12-14 06:40:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:55,671 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 214 transitions. [2022-12-14 06:40:55,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:40:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 214 transitions. [2022-12-14 06:40:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-14 06:40:55,672 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:55,672 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:40:55,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 06:40:55,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:40:55,874 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:40:55,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:55,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1320871773, now seen corresponding path program 8 times [2022-12-14 06:40:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:55,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34816726] [2022-12-14 06:40:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 06:41:00,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:00,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34816726] [2022-12-14 06:41:00,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34816726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:41:00,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519496649] [2022-12-14 06:41:00,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:41:00,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:00,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:00,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:00,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 06:41:12,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 06:41:12,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:41:12,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 06:41:12,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2022-12-14 06:41:12,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:41:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2022-12-14 06:41:13,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519496649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:41:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1243297042] [2022-12-14 06:41:13,096 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:41:13,096 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:41:13,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:41:13,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:41:13,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:41:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,656 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:41:13,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:41:13,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 76 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 67 [2022-12-14 06:41:13,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:13,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:41:14,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:14,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:14,189 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 06:41:14,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 988 treesize of output 976 [2022-12-14 06:41:14,477 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 [2022-12-14 06:41:14,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,502 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:14,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:14,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:14,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,546 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:14,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:14,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,627 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:14,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:14,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,670 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:14,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:14,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:14,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,711 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:14,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:14,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,751 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:14,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:14,774 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:14,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:14,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,855 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:41:14,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:41:14,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,925 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:14,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:14,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,944 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:14,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:14,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:14,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:14,981 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:14,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:15,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,016 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,034 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:15,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:15,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,089 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:41:15,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:41:15,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,148 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,169 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:15,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,205 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:15,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:15,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,254 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,287 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:15,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,329 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:15,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:15,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,363 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,381 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:15,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:15,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,436 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:41:15,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:41:15,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,539 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,561 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:15,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:15,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,633 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:41:15,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:41:15,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:15,699 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:15,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:15,716 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:41:16,415 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8465#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:41:16,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:41:16,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:41:16,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2022-12-14 06:41:16,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688957840] [2022-12-14 06:41:16,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:41:16,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-12-14 06:41:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-12-14 06:41:16,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 06:41:16,419 INFO L87 Difference]: Start difference. First operand 204 states and 214 transitions. Second operand has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:16,891 INFO L93 Difference]: Finished difference Result 417 states and 545 transitions. [2022-12-14 06:41:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-12-14 06:41:16,891 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 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 202 [2022-12-14 06:41:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:16,893 INFO L225 Difference]: With dead ends: 417 [2022-12-14 06:41:16,894 INFO L226 Difference]: Without dead ends: 313 [2022-12-14 06:41:16,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 06:41:16,897 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:16,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:41:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-12-14 06:41:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-12-14 06:41:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.0352564102564104) internal successors, (323), 312 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2022-12-14 06:41:16,906 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 202 [2022-12-14 06:41:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:16,906 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2022-12-14 06:41:16,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2022-12-14 06:41:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-12-14 06:41:16,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:16,909 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:16,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 06:41:17,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:17,111 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:41:17,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash 895333200, now seen corresponding path program 9 times [2022-12-14 06:41:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:17,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521157938] [2022-12-14 06:41:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:41:22,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521157938] [2022-12-14 06:41:22,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521157938] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:41:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161647719] [2022-12-14 06:41:22,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 06:41:22,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:41:22,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:22,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:41:22,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 06:41:23,083 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 06:41:23,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:41:23,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 06:41:23,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:41:23,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:41:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:41:30,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161647719] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:41:30,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1586228161] [2022-12-14 06:41:30,288 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:41:30,289 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:41:30,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:41:30,289 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:41:30,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:41:30,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,840 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:41:30,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:41:30,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:31,535 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:41:31,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:41:31,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:31,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:41:32,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:32,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:32,051 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 06:41:32,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 988 treesize of output 976 [2022-12-14 06:41:32,299 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 [2022-12-14 06:41:32,318 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:32,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:32,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,387 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:41:32,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:41:32,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,467 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,487 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:32,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:32,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,548 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:41:32,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:41:32,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,625 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,645 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:32,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,682 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:32,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:32,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,731 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,770 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:32,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,809 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:32,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:32,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,848 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,868 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,909 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:32,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:32,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,949 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:32,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:32,971 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:32,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:33,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,010 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:33,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:33,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,069 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:33,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,110 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:33,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,164 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:33,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:33,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,200 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:33,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,220 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:41:33,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:41:33,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,282 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:41:33,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:41:33,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,340 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:33,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,360 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:33,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:33,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,400 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:41:33,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:41:33,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:41:33,451 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:41:33,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:41:33,474 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:41:42,543 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11979#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:41:42,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:41:42,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:41:42,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2022-12-14 06:41:42,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865939113] [2022-12-14 06:41:42,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:41:42,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-12-14 06:41:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-12-14 06:41:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 06:41:42,550 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:42,836 INFO L93 Difference]: Finished difference Result 626 states and 746 transitions. [2022-12-14 06:41:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-14 06:41:42,836 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 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 311 [2022-12-14 06:41:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:42,837 INFO L225 Difference]: With dead ends: 626 [2022-12-14 06:41:42,837 INFO L226 Difference]: Without dead ends: 414 [2022-12-14 06:41:42,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 757 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22596 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 06:41:42,840 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:42,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:41:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-14 06:41:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-12-14 06:41:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.026634382566586) internal successors, (424), 413 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 424 transitions. [2022-12-14 06:41:42,849 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 424 transitions. Word has length 311 [2022-12-14 06:41:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:42,849 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 424 transitions. [2022-12-14 06:41:42,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 424 transitions. [2022-12-14 06:41:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-12-14 06:41:42,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:42,854 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:42,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 06:41:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 06:41:43,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:41:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash -193550013, now seen corresponding path program 10 times [2022-12-14 06:41:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085360661] [2022-12-14 06:41:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:42:03,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085360661] [2022-12-14 06:42:03,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085360661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:42:03,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202022741] [2022-12-14 06:42:03,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 06:42:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:42:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:42:03,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:42:03,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 06:42:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:03,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 202 conjunts are in the unsatisfiable core [2022-12-14 06:42:03,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:42:04,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:42:32,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202022741] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:32,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [580242477] [2022-12-14 06:42:32,089 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 06:42:32,089 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:42:32,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:42:32,090 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:42:32,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:42:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,629 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 06:42:32,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 06:42:32,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:32,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:33,274 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 06:42:33,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 06:42:33,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:33,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 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 [2022-12-14 06:42:33,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:33,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:33,807 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 06:42:33,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 978 treesize of output 977 [2022-12-14 06:42:34,402 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 [2022-12-14 06:42:34,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,426 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:34,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:34,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:34,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,466 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:42:34,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:42:34,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,529 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:34,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:34,571 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:42:34,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:42:34,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,641 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:42:34,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:42:34,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,752 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:34,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:34,774 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:42:34,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:42:34,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,832 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:42:34,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:42:34,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,886 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:34,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:34,911 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:42:34,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:42:34,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:34,970 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:42:34,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:42:35,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,028 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,048 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:42:35,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:42:35,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,112 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 06:42:35,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 06:42:35,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,188 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,212 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:35,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,254 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:42:35,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:42:35,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,313 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,354 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:42:35,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 06:42:35,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,415 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 06:42:35,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 06:42:35,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,492 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,513 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:35,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,549 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:42:35,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:42:35,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,591 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,614 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:35,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,659 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:42:35,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 06:42:35,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:35,715 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:42:35,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 06:42:35,735 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:42:36,767 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16921#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem22#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem22#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.base| 0))' at error location [2022-12-14 06:42:36,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:42:36,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:42:36,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2022-12-14 06:42:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162994800] [2022-12-14 06:42:36,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:42:36,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-12-14 06:42:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:42:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-12-14 06:42:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 06:42:36,784 INFO L87 Difference]: Start difference. First operand 414 states and 424 transitions. Second operand has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:38,423 INFO L93 Difference]: Finished difference Result 828 states and 1049 transitions. [2022-12-14 06:42:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-12-14 06:42:38,424 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 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 412 [2022-12-14 06:42:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:38,425 INFO L225 Difference]: With dead ends: 828 [2022-12-14 06:42:38,425 INFO L226 Difference]: Without dead ends: 616 [2022-12-14 06:42:38,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 06:42:38,432 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:38,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:42:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-12-14 06:42:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-12-14 06:42:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.0178861788617886) internal successors, (626), 615 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 626 transitions. [2022-12-14 06:42:38,446 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 626 transitions. Word has length 412 [2022-12-14 06:42:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:38,446 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 626 transitions. [2022-12-14 06:42:38,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 626 transitions. [2022-12-14 06:42:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-12-14 06:42:38,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:38,449 INFO L195 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:38,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 06:42:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 06:42:38,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:42:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1300672867, now seen corresponding path program 11 times [2022-12-14 06:42:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731092922] [2022-12-14 06:42:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:38,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:43:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 83280 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 06:43:59,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:43:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731092922] [2022-12-14 06:43:59,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731092922] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:43:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519077248] [2022-12-14 06:43:59,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:43:59,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:43:59,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:43:59,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:43:59,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b2ddf2-23fd-4a5a-b403-af4947890d2b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process