./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/mods.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/mods.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba --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 f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba --- 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-b5237d8 [2022-11-22 02:47:42,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:47:42,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:47:42,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:47:42,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:47:42,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:47:42,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:47:42,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:47:42,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:47:42,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:47:42,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:47:42,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:47:42,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:47:42,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:47:42,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:47:42,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:47:42,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:47:42,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:47:42,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:47:42,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:47:42,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:47:42,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:47:42,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:47:42,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:47:42,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:47:42,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:47:42,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:47:42,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:47:42,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:47:42,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:47:42,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:47:42,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:47:42,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:47:42,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:47:42,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:47:42,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:47:42,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:47:42,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:47:42,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:47:42,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:47:42,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:47:42,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:47:42,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:47:42,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:47:42,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:47:42,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:47:42,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:47:42,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:47:42,466 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:47:42,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:47:42,467 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:47:42,467 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:47:42,469 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:47:42,469 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:47:42,469 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:47:42,470 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:47:42,470 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:47:42,470 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:47:42,471 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:47:42,471 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:47:42,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:47:42,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:47:42,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:47:42,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:47:42,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:47:42,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:47:42,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:47:42,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:47:42,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:47:42,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:47:42,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:47:42,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:47:42,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:47:42,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:47:42,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:47:42,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:47:42,477 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:47:42,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:47:42,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:47:42,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:47:42,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:47:42,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:47:42,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:47:42,479 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_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba [2022-11-22 02:47:42,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:47:42,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:47:42,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:47:42,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:47:42,856 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:47:42,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-fpi/mods.c [2022-11-22 02:47:46,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:47:46,315 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:47:46,315 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/sv-benchmarks/c/array-fpi/mods.c [2022-11-22 02:47:46,323 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/data/4529d7649/c20e189f4ea645be8d8e44d30ae448ca/FLAG5a3e618d3 [2022-11-22 02:47:46,685 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/data/4529d7649/c20e189f4ea645be8d8e44d30ae448ca [2022-11-22 02:47:46,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:47:46,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:47:46,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:47:46,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:47:46,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:47:46,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:46" (1/1) ... [2022-11-22 02:47:46,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f126e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:46, skipping insertion in model container [2022-11-22 02:47:46,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:46" (1/1) ... [2022-11-22 02:47:46,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:47:46,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:47:46,933 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_448db209-9241-4f2a-8f6d-8eddaae37bf4/sv-benchmarks/c/array-fpi/mods.c[587,600] [2022-11-22 02:47:46,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:47:46,990 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:47:47,002 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_448db209-9241-4f2a-8f6d-8eddaae37bf4/sv-benchmarks/c/array-fpi/mods.c[587,600] [2022-11-22 02:47:47,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:47:47,028 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:47:47,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47 WrapperNode [2022-11-22 02:47:47,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:47:47,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:47:47,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:47:47,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:47:47,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,071 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2022-11-22 02:47:47,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:47:47,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:47:47,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:47:47,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:47:47,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:47:47,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:47:47,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:47:47,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:47:47,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (1/1) ... [2022-11-22 02:47:47,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:47:47,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:47:47,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:47:47,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:47:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:47:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:47:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:47:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:47:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:47:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:47:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:47:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:47:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:47:47,354 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:47:47,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:47:47,628 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:47:47,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:47:47,684 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-22 02:47:47,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:47 BoogieIcfgContainer [2022-11-22 02:47:47,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:47:47,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:47:47,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:47:47,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:47:47,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:47:46" (1/3) ... [2022-11-22 02:47:47,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30697d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:47, skipping insertion in model container [2022-11-22 02:47:47,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:47" (2/3) ... [2022-11-22 02:47:47,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30697d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:47, skipping insertion in model container [2022-11-22 02:47:47,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:47" (3/3) ... [2022-11-22 02:47:47,698 INFO L112 eAbstractionObserver]: Analyzing ICFG mods.c [2022-11-22 02:47:47,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:47:47,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:47:47,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:47:47,790 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;@2e16e675, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:47:47,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:47:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:47:47,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:47,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:47,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:47:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1473824747, now seen corresponding path program 1 times [2022-11-22 02:47:47,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:47,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516203599] [2022-11-22 02:47:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:48,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516203599] [2022-11-22 02:47:48,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516203599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:48,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:48,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:47:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229129846] [2022-11-22 02:47:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:48,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:47:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:48,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:47:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:47:48,317 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:48,385 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2022-11-22 02:47:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:47:48,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:47:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:48,397 INFO L225 Difference]: With dead ends: 24 [2022-11-22 02:47:48,398 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 02:47:48,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:47:48,405 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:48,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:47:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 02:47:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 02:47:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-11-22 02:47:48,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2022-11-22 02:47:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:48,446 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-11-22 02:47:48,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2022-11-22 02:47:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:47:48,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:48,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:48,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:47:48,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:47:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash -332942029, now seen corresponding path program 1 times [2022-11-22 02:47:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:48,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500279181] [2022-11-22 02:47:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:48,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:47:48,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500279181] [2022-11-22 02:47:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500279181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:48,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:47:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089150389] [2022-11-22 02:47:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:47:48,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:48,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:47:48,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:47:48,593 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:48,642 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-11-22 02:47:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:47:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 02:47:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:48,644 INFO L225 Difference]: With dead ends: 27 [2022-11-22 02:47:48,644 INFO L226 Difference]: Without dead ends: 20 [2022-11-22 02:47:48,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:47:48,647 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:48,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 6 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:47:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-22 02:47:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-11-22 02:47:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-22 02:47:48,655 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2022-11-22 02:47:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:48,656 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-22 02:47:48,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-22 02:47:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:47:48,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:48,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:48,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:47:48,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:47:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1080912201, now seen corresponding path program 1 times [2022-11-22 02:47:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082037104] [2022-11-22 02:47:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:48,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:47:48,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51882655] [2022-11-22 02:47:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:48,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:47:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:47:48,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:47:48,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:47:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:48,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-22 02:47:48,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:47:48,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-22 02:47:48,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:47:49,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:47:49,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-22 02:47:49,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 02:47:49,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 51 [2022-11-22 02:47:49,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2022-11-22 02:47:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:49,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:47:52,272 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_53 Int)) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= (+ (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) v_ArrVal_53)) (= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_53)))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_53))) (mod .cse1 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))))) 0)))) is different from false [2022-11-22 02:48:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-22 02:48:13,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:13,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082037104] [2022-11-22 02:48:13,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:48:13,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51882655] [2022-11-22 02:48:13,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51882655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:13,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1272002023] [2022-11-22 02:48:13,591 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:48:13,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:13,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:13,602 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:13,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,778 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:48:13,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:48:13,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:48:13,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-22 02:48:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:13,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-11-22 02:48:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:14,275 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-22 02:48:14,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 34 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 434 treesize of output 423 [2022-11-22 02:48:14,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:48:14,484 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:48:14,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:48:14,605 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:48:14,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:48:14,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:14,718 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:48:14,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-22 02:48:14,828 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:48:14,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:48:14,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:15,227 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:48:15,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 73 [2022-11-22 02:48:15,471 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:48:15,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:48:15,558 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:16,689 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '235#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:48:16,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:16,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:48:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-22 02:48:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618817587] [2022-11-22 02:48:16,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:16,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 02:48:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 02:48:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=557, Unknown=7, NotChecked=48, Total=702 [2022-11-22 02:48:16,692 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:38,137 WARN L233 SmtUtils]: Spent 15.78s on a formula simplification. DAG size of input: 46 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:48:40,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:48:42,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:48:43,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:48:45,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:48:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:54,154 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-11-22 02:48:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-22 02:48:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 02:48:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:54,157 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:48:54,157 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 02:48:54,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=226, Invalid=1331, Unknown=7, NotChecked=76, Total=1640 [2022-11-22 02:48:54,161 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 93 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 25 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:54,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 79 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 281 Invalid, 3 Unknown, 36 Unchecked, 9.5s Time] [2022-11-22 02:48:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 02:48:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2022-11-22 02:48:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2022-11-22 02:48:54,172 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 13 [2022-11-22 02:48:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:54,173 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2022-11-22 02:48:54,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2022-11-22 02:48:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:48:54,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:54,175 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:54,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:54,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1737417492, now seen corresponding path program 2 times [2022-11-22 02:48:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:54,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467032408] [2022-11-22 02:48:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:54,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:54,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:48:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067421973] [2022-11-22 02:48:54,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:48:54,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:54,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:54,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:48:54,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 02:48:54,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:48:54,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:48:54,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:48:54,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:48:54,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467032408] [2022-11-22 02:48:54,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:48:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067421973] [2022-11-22 02:48:54,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067421973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:54,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1675368075] [2022-11-22 02:48:54,726 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:48:54,727 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:54,727 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:54,727 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:54,727 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:54,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:54,786 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:48:54,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-11-22 02:48:54,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:54,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:54,992 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:48:54,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:48:55,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:48:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-22 02:48:55,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:55,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:55,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:55,416 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-22 02:48:55,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 429 treesize of output 424 [2022-11-22 02:48:55,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:48:55,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:55,675 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-22 02:48:55,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-22 02:48:55,773 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:48:55,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:48:55,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:55,843 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:48:55,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-22 02:48:55,942 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:48:55,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:48:56,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:56,563 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:48:56,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 68 [2022-11-22 02:48:56,876 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:48:56,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:48:56,968 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:48:57,749 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '470#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:48:57,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:48:57,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:48:57,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-22 02:48:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839814389] [2022-11-22 02:48:57,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:48:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:48:57,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:48:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:48:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:48:57,751 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:57,924 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2022-11-22 02:48:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:48:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 02:48:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:57,926 INFO L225 Difference]: With dead ends: 61 [2022-11-22 02:48:57,926 INFO L226 Difference]: Without dead ends: 35 [2022-11-22 02:48:57,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:48:57,927 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:57,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 15 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:48:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-22 02:48:57,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2022-11-22 02:48:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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) [2022-11-22 02:48:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-11-22 02:48:57,937 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2022-11-22 02:48:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:57,938 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-11-22 02:48:57,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-11-22 02:48:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 02:48:57,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:57,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:57,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:58,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:58,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash 996737740, now seen corresponding path program 3 times [2022-11-22 02:48:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:48:58,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441477199] [2022-11-22 02:48:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:58,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:48:58,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:48:58,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023932942] [2022-11-22 02:48:58,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:48:58,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:58,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:58,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:58,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:48:58,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:48:58,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:48:58,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:48:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:48:58,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:48:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:48:58,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:58,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441477199] [2022-11-22 02:48:58,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:48:58,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023932942] [2022-11-22 02:48:58,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023932942] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:48:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163370520] [2022-11-22 02:48:58,388 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:48:58,388 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:48:58,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:48:58,391 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:48:58,391 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:48:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,555 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-22 02:48:58,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-22 02:48:58,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,697 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:48:58,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:48:58,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-22 02:48:58,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-22 02:48:58,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:48:58,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:58,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:59,075 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-22 02:48:59,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 429 treesize of output 424 [2022-11-22 02:48:59,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:48:59,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:59,388 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-22 02:48:59,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-22 02:48:59,485 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:48:59,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:48:59,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:59,575 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:48:59,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-22 02:48:59,671 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:48:59,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:48:59,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:48:59,866 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:48:59,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 68 [2022-11-22 02:49:00,081 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:49:00,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:49:00,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:00,850 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '709#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:49:00,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:49:00,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:49:00,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-22 02:49:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866066094] [2022-11-22 02:49:00,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:49:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:49:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:00,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:49:00,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:49:00,853 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:01,075 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-11-22 02:49:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:49:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 02:49:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:01,077 INFO L225 Difference]: With dead ends: 35 [2022-11-22 02:49:01,077 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:49:01,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:49:01,079 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:01,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 18 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:49:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:49:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2022-11-22 02:49:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-22 02:49:01,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2022-11-22 02:49:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:01,087 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-22 02:49:01,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-22 02:49:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:49:01,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:01,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:01,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:49:01,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:01,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:01,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1834853461, now seen corresponding path program 4 times [2022-11-22 02:49:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:01,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330750437] [2022-11-22 02:49:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:01,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:49:01,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416885334] [2022-11-22 02:49:01,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:49:01,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:49:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:01,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:49:01,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:49:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:01,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-22 02:49:01,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:49:01,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:49:01,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-22 02:49:01,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:49:01,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:01,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 02:49:01,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:01,703 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 0 case distinctions, treesize of input 48 treesize of output 38 [2022-11-22 02:49:01,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:01,755 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 0 case distinctions, treesize of input 54 treesize of output 38 [2022-11-22 02:49:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:01,874 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 0 case distinctions, treesize of input 57 treesize of output 37 [2022-11-22 02:49:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:01,936 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 0 case distinctions, treesize of input 63 treesize of output 41 [2022-11-22 02:49:02,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:02,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:02,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 371 treesize of output 177 [2022-11-22 02:49:02,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:02,279 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 0 case distinctions, treesize of input 57 treesize of output 41 [2022-11-22 02:49:02,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 29 [2022-11-22 02:49:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:02,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:05,713 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 Int)) (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_186)))) (let ((.cse4 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ v_ArrVal_186 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (mod .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse2 .cse3 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse4 .cse3))))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))))) 0) (not (<= (+ (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) v_ArrVal_186))))) is different from false [2022-11-22 02:49:07,787 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 Int) (v_ArrVal_184 Int)) (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse6 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (or (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_186)))) (let ((.cse4 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ v_ArrVal_186 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (mod .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse2 .cse3 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse4 .cse3))))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))))) 0) (not (<= (+ (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))) v_ArrVal_184)) (not (<= (+ v_ArrVal_184 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_184)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse6 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) v_ArrVal_186))))) is different from false [2022-11-22 02:49:09,834 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 Int) (v_ArrVal_184 Int)) (let ((.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_186)))) (let ((.cse4 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ v_ArrVal_186 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (mod .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0))) (store .cse2 .cse3 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse4 .cse3))))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))))) 0) (not (<= (+ v_ArrVal_184 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_184)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)) v_ArrVal_186)) (not (<= (+ (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) v_ArrVal_184))))) is different from false [2022-11-22 02:49:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-22 02:49:29,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:29,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330750437] [2022-11-22 02:49:29,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:49:29,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416885334] [2022-11-22 02:49:29,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416885334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:29,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1088806320] [2022-11-22 02:49:29,098 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:49:29,098 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:29,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:29,099 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:29,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:29,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,156 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:49:29,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-11-22 02:49:29,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,296 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:49:29,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:49:29,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:49:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-11-22 02:49:29,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:29,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:49:29,600 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-22 02:49:29,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 34 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 434 treesize of output 423 [2022-11-22 02:49:29,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:49:29,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:29,777 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-22 02:49:29,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-22 02:49:29,861 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:49:29,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:49:29,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:29,936 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:49:29,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2022-11-22 02:49:30,038 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:49:30,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:49:30,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:49:30,352 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:49:30,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 68 [2022-11-22 02:49:30,599 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:49:30,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:49:30,632 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:49:31,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '936#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:49:31,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:49:31,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:49:31,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-22 02:49:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575402013] [2022-11-22 02:49:31,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:49:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 02:49:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 02:49:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=870, Unknown=9, NotChecked=186, Total=1190 [2022-11-22 02:49:31,850 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:33,924 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse13 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (+ .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse11 (select .cse3 .cse10))) (let ((.cse7 (store .cse3 .cse10 (+ .cse4 .cse11)))) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse8 (+ .cse13 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse12 (+ .cse4 1))) (and (= (let ((.cse0 (+ .cse4 .cse5))) (mod .cse0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse1 (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0))) (store .cse1 .cse2 (+ (select .cse3 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (= (let ((.cse6 (store .cse7 .cse8 (+ (select .cse3 .cse8) .cse9)))) (mod (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= 0 .cse4) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (mod (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ .cse9 1)) 0) (forall ((v_ArrVal_194 Int)) (= (select (store (store .cse3 .cse10 (mod .cse11 .cse12)) .cse8 v_ArrVal_194) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (mod .cse5 .cse12) 0))))))) is different from false [2022-11-22 02:50:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:14,980 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2022-11-22 02:50:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-22 02:50:14,981 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 02:50:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:14,983 INFO L225 Difference]: With dead ends: 81 [2022-11-22 02:50:14,984 INFO L226 Difference]: Without dead ends: 79 [2022-11-22 02:50:14,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 10 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 67.3s TimeCoverageRelationStatistics Valid=390, Invalid=2696, Unknown=10, NotChecked=444, Total=3540 [2022-11-22 02:50:14,987 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 135 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:14,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 97 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 336 Invalid, 0 Unknown, 120 Unchecked, 3.5s Time] [2022-11-22 02:50:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-22 02:50:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 34. [2022-11-22 02:50:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-11-22 02:50:15,004 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 17 [2022-11-22 02:50:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:15,005 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-11-22 02:50:15,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-11-22 02:50:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 02:50:15,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:15,006 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:15,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-22 02:50:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:50:15,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:50:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1784474046, now seen corresponding path program 5 times [2022-11-22 02:50:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:15,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370292639] [2022-11-22 02:50:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:15,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:15,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:50:15,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553496985] [2022-11-22 02:50:15,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:50:15,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:50:15,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:50:15,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:50:15,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:50:15,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 02:50:15,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:50:15,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:50:15,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:50:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:50:15,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:50:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:50:15,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:15,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370292639] [2022-11-22 02:50:15,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:50:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553496985] [2022-11-22 02:50:15,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553496985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:50:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [929940576] [2022-11-22 02:50:15,617 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:50:15,617 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:50:15,617 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:50:15,618 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:50:15,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:50:15,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,672 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:50:15,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-11-22 02:50:15,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,816 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:50:15,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:50:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:50:15,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:15,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-11-22 02:50:16,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:16,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:16,117 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-22 02:50:16,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 34 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 434 treesize of output 423 [2022-11-22 02:50:16,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:50:16,253 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:50:16,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:50:16,321 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:50:16,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:50:16,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:16,387 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:50:16,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:50:16,452 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:50:16,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:50:16,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:16,603 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:50:16,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 73 [2022-11-22 02:50:16,906 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:50:16,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:50:16,981 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:50:17,706 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1288#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:50:17,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:50:17,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:50:17,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-22 02:50:17,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858629349] [2022-11-22 02:50:17,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:50:17,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:50:17,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:50:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:50:17,709 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:17,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:17,991 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2022-11-22 02:50:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:50:17,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 02:50:17,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:17,992 INFO L225 Difference]: With dead ends: 83 [2022-11-22 02:50:17,992 INFO L226 Difference]: Without dead ends: 61 [2022-11-22 02:50:17,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 10 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:50:17,994 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:17,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 33 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:50:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-22 02:50:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2022-11-22 02:50:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-11-22 02:50:18,012 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 18 [2022-11-22 02:50:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:18,012 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-11-22 02:50:18,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-11-22 02:50:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:50:18,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:18,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:18,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:50:18,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:50:18,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:50:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2144309898, now seen corresponding path program 6 times [2022-11-22 02:50:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:18,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452828711] [2022-11-22 02:50:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:18,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:18,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:50:18,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212282134] [2022-11-22 02:50:18,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:50:18,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:50:18,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:50:18,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:50:18,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:50:18,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:50:18,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:50:18,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:50:18,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:50:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:50:18,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:50:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:50:18,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:18,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452828711] [2022-11-22 02:50:18,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:50:18,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212282134] [2022-11-22 02:50:18,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212282134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:50:18,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861772246] [2022-11-22 02:50:18,521 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:50:18,521 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:50:18,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:50:18,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:50:18,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:50:18,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,667 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:50:18,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:50:18,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:50:18,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-22 02:50:18,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-22 02:50:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:18,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:18,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:19,025 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-22 02:50:19,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 429 treesize of output 424 [2022-11-22 02:50:19,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:50:19,275 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:50:19,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:50:19,366 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:50:19,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:50:19,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:19,445 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:50:19,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:50:19,529 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:50:19,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:50:19,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:19,635 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:50:19,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 73 [2022-11-22 02:50:19,812 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:50:19,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:50:19,868 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:50:20,478 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1627#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:50:20,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:50:20,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:50:20,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-22 02:50:20,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002859844] [2022-11-22 02:50:20,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:50:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:50:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:50:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:20,480 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:20,873 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-11-22 02:50:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:50:20,873 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 02:50:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:20,874 INFO L225 Difference]: With dead ends: 72 [2022-11-22 02:50:20,874 INFO L226 Difference]: Without dead ends: 54 [2022-11-22 02:50:20,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 11 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:50:20,875 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:20,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 49 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:50:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-22 02:50:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-11-22 02:50:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-22 02:50:20,891 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 19 [2022-11-22 02:50:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:20,891 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-22 02:50:20,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-22 02:50:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 02:50:20,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:20,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:20,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:50:21,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:50:21,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:50:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash -65478855, now seen corresponding path program 1 times [2022-11-22 02:50:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:21,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304885872] [2022-11-22 02:50:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:21,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:21,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:50:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001219179] [2022-11-22 02:50:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:21,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:50:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:50:21,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:50:21,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:50:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:21,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-22 02:50:21,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:50:21,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-22 02:50:21,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:50:21,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 02:50:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:21,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 02:50:21,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:21,479 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 0 case distinctions, treesize of input 48 treesize of output 38 [2022-11-22 02:50:21,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:21,539 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 0 case distinctions, treesize of input 50 treesize of output 38 [2022-11-22 02:50:21,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:21,660 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 0 case distinctions, treesize of input 53 treesize of output 37 [2022-11-22 02:50:21,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:21,721 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 0 case distinctions, treesize of input 55 treesize of output 37 [2022-11-22 02:50:21,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:50:21,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:21,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 85 [2022-11-22 02:50:22,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:50:22,005 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 0 case distinctions, treesize of input 156 treesize of output 84 [2022-11-22 02:50:22,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 41 [2022-11-22 02:50:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:22,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:50:44,521 WARN L233 SmtUtils]: Spent 18.46s on a formula simplification. DAG size of input: 100 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:52:20,136 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:52:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:50,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304885872] [2022-11-22 02:52:50,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:52:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001219179] [2022-11-22 02:52:50,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001219179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:52:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682219273] [2022-11-22 02:52:50,346 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 02:52:50,346 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:52:50,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:52:50,347 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:52:50,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:52:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,495 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-22 02:52:50,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-22 02:52:50,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,627 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:52:50,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:52:50,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-22 02:52:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-11-22 02:52:50,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:52:50,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:52:50,921 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-22 02:52:50,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 34 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 434 treesize of output 423 [2022-11-22 02:52:51,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:52:51,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:52:51,067 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-11-22 02:52:51,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-11-22 02:52:51,149 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:52:51,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:52:51,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:52:51,234 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:52:51,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:52:51,334 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:52:51,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:52:51,741 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:52:51,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 68 [2022-11-22 02:52:51,847 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:52:51,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:52:51,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:53:45,689 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1978#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:53:45,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:53:45,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:53:45,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-22 02:53:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346777084] [2022-11-22 02:53:45,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:53:45,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-22 02:53:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-22 02:53:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1399, Unknown=26, NotChecked=0, Total=1640 [2022-11-22 02:53:45,692 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:48,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:53:51,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:53:54,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:55:07,837 WARN L233 SmtUtils]: Spent 45.41s on a formula simplification. DAG size of input: 217 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:55:09,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:55:25,860 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 176 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:55:30,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:55:40,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:55:52,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:56:06,110 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse91 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse14 (+ .cse91 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse16 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse89 (select .cse13 .cse14))) (let ((.cse90 (store .cse13 .cse14 1)) (.cse80 (store .cse13 .cse14 (+ .cse16 .cse89))) (.cse47 (+ .cse91 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse49 (select .cse13 .cse47)) (.cse85 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse80) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse88 (store .cse90 .cse47 1))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse90)) (.cse77 (+ .cse16 1)) (.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse88)) (.cse82 (store .cse80 .cse47 (+ .cse49 .cse85)))) (let ((.cse86 (select .cse82 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse87 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse82) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse84 (select .cse80 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse37 (select .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse15 (mod .cse89 .cse77)) (.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse11 (+ (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse90 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse19 (= .cse15 0)) (.cse18 (+ .cse16 .cse15 1)) (.cse20 (not (< .cse89 0))) (.cse29 (+ (select .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse88 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse79 (select .cse80 .cse8)) (.cse78 (mod .cse84 (+ .cse85 1))) (.cse83 (mod .cse86 (+ .cse87 1))) (.cse81 (select .cse82 .cse8))) (and (forall ((v_ArrVal_353 Int)) (or (forall ((v_ArrVal_356 Int)) (let ((.cse3 (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse10 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse5 (+ v_ArrVal_356 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse9 (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| .cse5))) (let ((.cse2 (+ (select .cse10 .cse8) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse4 (store .cse9 .cse8 .cse2))) (let ((.cse1 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (mod .cse5 (+ .cse1 1)))) (or (= .cse0 0) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= .cse0 (+ v_ArrVal_361 .cse1 1))) (= (mod .cse2 (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (not (< .cse5 0)) (not (<= (+ v_ArrVal_353 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)))))))))))) (not (<= .cse11 v_ArrVal_353)))) (or (and (let ((.cse12 (store .cse13 .cse14 (+ (- 1) .cse15 (* (- 1) .cse16))))) (or (< 0 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= 0 (select .cse12 .cse8)))) (let ((.cse17 (store .cse13 .cse14 .cse18))) (or (= (select .cse17 .cse8) 0) (< 0 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse19 .cse20) (forall ((v_ArrVal_353 Int)) (or (forall ((v_ArrVal_356 Int)) (let ((.cse25 (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse28 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse22 (+ v_ArrVal_356 (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse27 (store .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| .cse22))) (let ((.cse24 (+ (select .cse28 .cse8) (select (select (store .cse25 |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse26 (store .cse27 .cse8 .cse24))) (let ((.cse23 (select (select (store .cse25 |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse21 (mod .cse22 (+ .cse23 1)))) (or (= .cse21 0) (not (< .cse22 0)) (not (<= (+ v_ArrVal_353 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)) (forall ((v_ArrVal_361 Int)) (or (not (<= (+ .cse23 .cse21 1) v_ArrVal_361)) (< 0 v_ArrVal_361) (= (mod .cse24 (+ (select (select (store .cse25 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse26 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))))))))))))) (not (<= .cse11 v_ArrVal_353)))) (<= 2 .cse16) (forall ((v_ArrVal_353 Int)) (or (not (<= .cse29 v_ArrVal_353)) (forall ((v_ArrVal_356 Int)) (or (forall ((v_ArrVal_361 Int)) (let ((.cse31 (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (+ v_ArrVal_356 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse34 (store .cse35 |c_ULTIMATE.start_main_~a~0#1.offset| .cse30))) (let ((.cse33 (+ (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse34) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse35 .cse8)))) (let ((.cse32 (store .cse34 .cse8 .cse33))) (or (not (<= (mod .cse30 (+ (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) v_ArrVal_361)) (< 0 v_ArrVal_361) (= (mod .cse33 (+ (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))))))))) (not (<= (+ v_ArrVal_353 (select (select (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)))))) (forall ((v_ArrVal_353 Int)) (or (forall ((v_ArrVal_356 Int)) (or (forall ((v_ArrVal_361 Int)) (let ((.cse39 (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse43 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse38 (+ v_ArrVal_356 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse42 (store .cse43 |c_ULTIMATE.start_main_~a~0#1.offset| .cse38))) (let ((.cse41 (+ (select .cse43 .cse8) (select (select (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| .cse42) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse40 (store .cse42 .cse8 .cse41))) (or (< 0 v_ArrVal_361) (not (<= (mod .cse38 (+ (select (select (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) v_ArrVal_361)) (= (mod .cse41 (+ (select (select (store .cse39 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))))))))) (not (<= (+ v_ArrVal_353 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)))) (not (<= .cse11 v_ArrVal_353)))) (or (and (forall ((v_ArrVal_361 Int)) (let ((.cse46 (store .cse13 .cse14 v_ArrVal_361))) (let ((.cse48 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse46) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse45 (mod .cse49 (+ .cse48 1)))) (let ((.cse44 (store .cse46 .cse47 (+ .cse45 (- 1) (* (- 1) .cse48))))) (or (= 0 (select .cse44 .cse8)) (< 0 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= .cse45 0) (not (<= .cse15 v_ArrVal_361)))))))) (forall ((v_ArrVal_361 Int)) (let ((.cse52 (store .cse13 .cse14 v_ArrVal_361))) (let ((.cse53 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse51 (mod .cse49 (+ .cse53 1)))) (let ((.cse50 (store .cse52 .cse47 (+ .cse51 .cse53 1)))) (or (< 0 (select .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= (select .cse50 .cse8) 0) (= .cse51 0) (not (<= .cse15 v_ArrVal_361))))))))) (not (< .cse49 0))) (let ((.cse54 (store .cse13 .cse14 .cse15))) (or (< 0 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= (select .cse54 .cse8) 0))) (forall ((v_ArrVal_361 Int)) (let ((.cse55 (let ((.cse56 (store .cse13 .cse14 v_ArrVal_361))) (store .cse56 .cse47 (mod .cse49 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))))) (or (= (select .cse55 .cse8) 0) (< 0 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (<= .cse15 v_ArrVal_361))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_353 Int)) (or (not (<= .cse29 v_ArrVal_353)) (forall ((v_ArrVal_356 Int)) (let ((.cse60 (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse64 (select .cse60 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (+ v_ArrVal_356 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse63 (store .cse64 |c_ULTIMATE.start_main_~a~0#1.offset| .cse62))) (let ((.cse59 (+ (select (select (store .cse60 |c_ULTIMATE.start_main_~a~0#1.base| .cse63) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse64 .cse8)))) (let ((.cse61 (store .cse63 .cse8 .cse59))) (let ((.cse58 (select (select (store .cse60 |c_ULTIMATE.start_main_~a~0#1.base| .cse61) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse57 (mod .cse62 (+ .cse58 1)))) (or (forall ((v_ArrVal_361 Int)) (or (not (<= .cse57 (+ .cse58 v_ArrVal_361 1))) (< 0 v_ArrVal_361) (= (mod .cse59 (+ (select (select (store .cse60 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse61 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (not (< .cse62 0)) (not (<= (+ v_ArrVal_353 (select (select (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)) (= .cse57 0))))))))))))) (or .cse19 (and (forall ((v_ArrVal_361 Int)) (let ((.cse65 (let ((.cse66 (store .cse13 .cse14 v_ArrVal_361))) (store .cse66 .cse47 (mod .cse49 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse66) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))))) (or (= (select .cse65 .cse8) 0) (< 0 (select .cse65 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (<= .cse18 v_ArrVal_361))))) (forall ((v_ArrVal_361 Int)) (let ((.cse67 (let ((.cse68 (store .cse13 .cse14 v_ArrVal_361))) (store .cse68 .cse47 (mod .cse49 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))))) (or (= (select .cse67 .cse8) 0) (< 0 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (<= .cse15 (+ v_ArrVal_361 .cse16 1))))))) .cse20) (forall ((v_ArrVal_353 Int)) (or (not (<= .cse29 v_ArrVal_353)) (forall ((v_ArrVal_356 Int)) (let ((.cse73 (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse76 (select .cse73 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse69 (+ v_ArrVal_356 (select .cse76 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse75 (store .cse76 |c_ULTIMATE.start_main_~a~0#1.offset| .cse69))) (let ((.cse72 (+ (select (select (store .cse73 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse76 .cse8)))) (let ((.cse74 (store .cse75 .cse8 .cse72))) (let ((.cse70 (select (select (store .cse73 |c_ULTIMATE.start_main_~a~0#1.base| .cse74) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse71 (mod .cse69 (+ .cse70 1)))) (or (not (< .cse69 0)) (not (<= (+ v_ArrVal_353 (select (select (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= (+ .cse70 .cse71 1) v_ArrVal_361)) (= (mod .cse72 (+ (select (select (store .cse73 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse74 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (= .cse71 0))))))))))))) (= (select .cse13 .cse8) .cse77) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= .cse78 v_ArrVal_361)) (= (mod .cse79 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (= (mod .cse81 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0) (not (<= .cse83 v_ArrVal_361)))) (= .cse77 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|)) (or (not (< .cse84 0)) (and (forall ((v_ArrVal_361 Int)) (or (not (<= .cse78 (+ v_ArrVal_361 .cse85 1))) (< 0 v_ArrVal_361) (= (mod .cse79 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= (+ .cse85 .cse78 1) v_ArrVal_361)) (= (mod .cse79 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0)))) (= .cse78 0)) (or (= .cse83 0) (not (< .cse86 0)) (and (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= .cse83 (+ v_ArrVal_361 .cse87 1))) (= (mod .cse81 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= (+ .cse83 .cse87 1) v_ArrVal_361)) (= (mod .cse81 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0)))))))))))))) is different from true [2022-11-22 02:56:08,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:56:10,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:56:12,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:56:15,949 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse19 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse40 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse34 (+ .cse19 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse42 (select .cse40 .cse8)) (.cse57 (store .cse40 |c_ULTIMATE.start_main_~a~0#1.offset| .cse34))) (let ((.cse37 (+ .cse42 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse57) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse38 (store .cse57 .cse8 .cse37))) (let ((.cse36 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse41 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse6 (+ .cse19 (select .cse40 (+ .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (.cse39 (+ .cse19 1)) (.cse35 (mod .cse34 (+ .cse36 1)))) (and (forall ((v_ArrVal_356 Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse9 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse5 (+ v_ArrVal_356 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse7 (store .cse9 |c_ULTIMATE.start_main_~a~0#1.offset| .cse5))) (let ((.cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse9 .cse8)))) (let ((.cse2 (store .cse7 .cse8 .cse0))) (let ((.cse3 (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (mod .cse5 (+ .cse3 1)))) (or (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (= (mod .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0) (not (<= (+ .cse3 .cse4 1) v_ArrVal_361)))) (not (< .cse5 0)) (not (<= .cse6 v_ArrVal_356)) (= .cse4 0))))))))))) (forall ((v_ArrVal_356 Int)) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse18 (select .cse15 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse11 (+ v_ArrVal_356 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse17 (store .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| .cse11))) (let ((.cse14 (+ (select (select (store .cse15 |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse18 .cse8)))) (let ((.cse16 (store .cse17 .cse8 .cse14))) (let ((.cse13 (select (select (store .cse15 |c_ULTIMATE.start_main_~a~0#1.base| .cse16) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse12 (mod .cse11 (+ .cse13 1)))) (or (not (< .cse11 0)) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= .cse12 (+ v_ArrVal_361 .cse13 1))) (= (mod .cse14 (+ (select (select (store .cse15 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (not (<= .cse6 v_ArrVal_356)) (= .cse12 0))))))))))) (<= 2 .cse19) (forall ((v_ArrVal_356 Int)) (or (not (<= .cse6 v_ArrVal_356)) (forall ((v_ArrVal_361 Int)) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse25 (select .cse21 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse20 (+ v_ArrVal_356 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse24 (store .cse25 |c_ULTIMATE.start_main_~a~0#1.offset| .cse20))) (let ((.cse23 (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~a~0#1.base| .cse24) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse25 .cse8)))) (let ((.cse22 (store .cse24 .cse8 .cse23))) (or (not (<= (mod .cse20 (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) v_ArrVal_361)) (< 0 v_ArrVal_361) (= (mod .cse23 (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))))))))))) (forall ((v_ArrVal_353 Int)) (or (forall ((v_ArrVal_356 Int)) (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse33 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse31 (+ v_ArrVal_356 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse32 (store .cse33 |c_ULTIMATE.start_main_~a~0#1.offset| .cse31))) (let ((.cse26 (+ (select (select (store .cse27 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse33 .cse8)))) (let ((.cse28 (store .cse32 .cse8 .cse26))) (let ((.cse29 (select (select (store .cse27 |c_ULTIMATE.start_main_~a~0#1.base| .cse28) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse30 (mod .cse31 (+ .cse29 1)))) (or (not (<= (+ v_ArrVal_353 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (= (mod .cse26 (+ (select (select (store .cse27 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0) (not (<= (+ .cse29 .cse30 1) v_ArrVal_361)))) (not (< .cse31 0)) (= .cse30 0))))))))))) (not (<= .cse34 v_ArrVal_353)))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or (= .cse35 0) (not (< .cse34 0)) (and (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= .cse35 (+ v_ArrVal_361 .cse36 1))) (= (mod .cse37 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (forall ((v_ArrVal_361 Int)) (or (not (<= (+ .cse36 .cse35 1) v_ArrVal_361)) (< 0 v_ArrVal_361) (= (mod .cse37 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))))) (<= (mod .cse39 .cse39) (select .cse40 (+ .cse41 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (= .cse42 .cse39) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (= (mod .cse37 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0) (not (<= .cse35 v_ArrVal_361)))) (forall ((v_ArrVal_353 Int)) (or (forall ((v_ArrVal_356 Int)) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse50 (select .cse47 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (+ v_ArrVal_356 (select .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse49 (store .cse50 |c_ULTIMATE.start_main_~a~0#1.offset| .cse43))) (let ((.cse46 (+ (select (select (store .cse47 |c_ULTIMATE.start_main_~a~0#1.base| .cse49) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse50 .cse8)))) (let ((.cse48 (store .cse49 .cse8 .cse46))) (let ((.cse45 (select (select (store .cse47 |c_ULTIMATE.start_main_~a~0#1.base| .cse48) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse44 (mod .cse43 (+ .cse45 1)))) (or (not (<= (+ v_ArrVal_353 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)) (not (< .cse43 0)) (forall ((v_ArrVal_361 Int)) (or (< 0 v_ArrVal_361) (not (<= .cse44 (+ v_ArrVal_361 .cse45 1))) (= (mod .cse46 (+ (select (select (store .cse47 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse48 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))) (= .cse44 0))))))))))) (not (<= .cse34 v_ArrVal_353)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_353 Int)) (or (forall ((v_ArrVal_356 Int)) (or (not (<= (+ v_ArrVal_353 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) v_ArrVal_356)) (forall ((v_ArrVal_361 Int)) (let ((.cse52 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_356)))) (let ((.cse56 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse51 (+ v_ArrVal_356 (select .cse56 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse55 (store .cse56 |c_ULTIMATE.start_main_~a~0#1.offset| .cse51))) (let ((.cse54 (+ (select (select (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| .cse55) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse56 .cse8)))) (let ((.cse53 (store .cse55 .cse8 .cse54))) (or (not (<= (mod .cse51 (+ (select (select (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| .cse53) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) v_ArrVal_361)) (< 0 v_ArrVal_361) (= (mod .cse54 (+ (select (select (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse53 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_361)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0))))))))))) (not (<= .cse34 v_ArrVal_353)))) (= |c_ULTIMATE.start_main_~i~0#1| 1)))))))))) is different from true [2022-11-22 02:56:18,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-22 02:56:20,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-22 02:56:22,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-22 02:56:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:56:36,554 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-22 02:56:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:56:36,555 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 02:56:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:56:36,555 INFO L225 Difference]: With dead ends: 43 [2022-11-22 02:56:36,555 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 02:56:36,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 11 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 314.1s TimeCoverageRelationStatistics Valid=323, Invalid=1998, Unknown=39, NotChecked=190, Total=2550 [2022-11-22 02:56:36,558 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 30 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 100 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 51.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:56:36,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 44 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 273 Invalid, 10 Unknown, 2 Unchecked, 51.7s Time] [2022-11-22 02:56:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 02:56:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-22 02:56:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-22 02:56:36,568 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 20 [2022-11-22 02:56:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:56:36,568 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-22 02:56:36,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-22 02:56:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:56:36,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:56:36,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:56:36,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:56:36,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 02:56:36,776 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:56:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:56:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash -105264649, now seen corresponding path program 7 times [2022-11-22 02:56:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:56:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844008555] [2022-11-22 02:56:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:56:36,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:56:36,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:56:36,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438326840] [2022-11-22 02:56:36,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:56:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:56:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:56:36,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:56:36,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:56:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:56:36,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-22 02:56:36,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:56:36,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:56:36,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-22 02:56:37,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-22 02:56:37,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 02:56:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-22 02:56:37,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:56:37,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2022-11-22 02:56:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:56:37,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2022-11-22 02:56:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 49 [2022-11-22 02:56:37,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:56:37,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 54 [2022-11-22 02:56:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:56:37,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-11-22 02:56:37,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,814 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 0 case distinctions, treesize of input 57 treesize of output 39 [2022-11-22 02:56:37,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:37,982 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 0 case distinctions, treesize of input 47 treesize of output 37 [2022-11-22 02:56:38,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:38,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:38,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2022-11-22 02:56:38,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:56:38,200 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 0 case distinctions, treesize of input 37 treesize of output 33 [2022-11-22 02:56:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:56:38,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:57:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:57:33,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:57:33,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844008555] [2022-11-22 02:57:33,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:57:33,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438326840] [2022-11-22 02:57:33,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438326840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:57:33,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626690195] [2022-11-22 02:57:33,801 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:57:33,801 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:57:33,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:57:33,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:57:33,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:57:33,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:33,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:33,950 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:57:33,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:57:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:33,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:57:34,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-22 02:57:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-11-22 02:57:34,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:57:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:34,294 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-11-22 02:57:34,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 34 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 434 treesize of output 423 [2022-11-22 02:57:34,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:57:34,438 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:57:34,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:57:34,533 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:57:34,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:57:34,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:57:34,617 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:57:34,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:57:34,729 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:57:34,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:57:34,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:57:34,891 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:57:34,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 73 [2022-11-22 02:57:35,061 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:57:35,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:57:35,126 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:57:38,465 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2276#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:57:38,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:57:38,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:57:38,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2022-11-22 02:57:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726482535] [2022-11-22 02:57:38,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:57:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-22 02:57:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:57:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-22 02:57:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1596, Unknown=14, NotChecked=0, Total=1806 [2022-11-22 02:57:38,469 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 38 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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) [2022-11-22 02:57:51,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-22 02:57:55,791 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse9 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse12 (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (store .cse3 .cse12 (+ .cse9 (select .cse3 .cse12)))) (.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_ArrVal_446 Int)) (= (let ((.cse0 (let ((.cse1 (store .cse5 .cse6 v_ArrVal_446)) (.cse2 (+ .cse4 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse1 .cse2 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse3 .cse2)))))) (mod (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)) (= (mod (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)) 0) (= (select .cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse7 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (and (= .cse7 3) (= (mod 4 (+ .cse7 1)) .cse8) (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (mod .cse8 (+ .cse9 1)) 0) (forall ((v_ArrVal_446 Int)) (= (let ((.cse10 (let ((.cse11 (store .cse3 .cse12 v_ArrVal_446))) (store .cse11 .cse6 (+ (select .cse3 .cse6) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse11) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (mod (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)) (= |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2022-11-22 02:58:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:58:03,605 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2022-11-22 02:58:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-22 02:58:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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 21 [2022-11-22 02:58:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:58:03,607 INFO L225 Difference]: With dead ends: 77 [2022-11-22 02:58:03,607 INFO L226 Difference]: Without dead ends: 75 [2022-11-22 02:58:03,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 12 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=362, Invalid=3166, Unknown=16, NotChecked=116, Total=3660 [2022-11-22 02:58:03,610 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:58:03,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 121 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 594 Invalid, 0 Unknown, 21 Unchecked, 9.9s Time] [2022-11-22 02:58:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-22 02:58:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2022-11-22 02:58:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2022-11-22 02:58:03,631 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 21 [2022-11-22 02:58:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:58:03,631 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2022-11-22 02:58:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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) [2022-11-22 02:58:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2022-11-22 02:58:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:58:03,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:58:03,632 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:58:03,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:58:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:58:03,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:58:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:58:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1837045100, now seen corresponding path program 8 times [2022-11-22 02:58:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:58:03,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145175452] [2022-11-22 02:58:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:58:03,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:58:03,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:58:03,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730649521] [2022-11-22 02:58:03,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:58:03,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:58:03,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:58:03,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:58:03,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:58:04,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 02:58:04,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:58:04,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:58:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:58:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:58:04,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:58:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:58:04,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:58:04,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145175452] [2022-11-22 02:58:04,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:58:04,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730649521] [2022-11-22 02:58:04,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730649521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:58:04,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [46853051] [2022-11-22 02:58:04,342 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:58:04,342 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:58:04,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:58:04,343 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:58:04,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:58:04,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,401 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:58:04,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-11-22 02:58:04,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,574 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:58:04,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:58:04,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-22 02:58:04,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-22 02:58:04,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:04,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:04,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:04,850 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-22 02:58:04,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 429 treesize of output 424 [2022-11-22 02:58:04,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:58:04,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:05,033 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:58:05,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:58:05,169 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:58:05,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:58:05,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:05,273 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:58:05,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:58:05,390 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:58:05,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:58:05,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:05,547 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:58:05,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 73 [2022-11-22 02:58:06,037 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:58:06,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:58:06,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:58:07,141 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2659#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:58:07,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:58:07,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:58:07,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-22 02:58:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041779376] [2022-11-22 02:58:07,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:58:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:58:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:58:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:58:07,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:58:07,143 INFO L87 Difference]: Start difference. First operand 43 states and 56 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:58:07,819 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2022-11-22 02:58:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:58:07,820 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 02:58:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:58:07,821 INFO L225 Difference]: With dead ends: 114 [2022-11-22 02:58:07,821 INFO L226 Difference]: Without dead ends: 85 [2022-11-22 02:58:07,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 18 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2022-11-22 02:58:07,822 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:58:07,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 126 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:58:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-22 02:58:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 44. [2022-11-22 02:58:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-22 02:58:07,845 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 22 [2022-11-22 02:58:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:58:07,845 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-22 02:58:07,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-22 02:58:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 02:58:07,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:58:07,847 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:58:07,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 02:58:08,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:58:08,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:58:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:58:08,054 INFO L85 PathProgramCache]: Analyzing trace with hash -807483306, now seen corresponding path program 9 times [2022-11-22 02:58:08,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:58:08,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867475153] [2022-11-22 02:58:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:58:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:58:08,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:58:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640402092] [2022-11-22 02:58:08,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:58:08,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:58:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:58:08,077 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:58:08,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:58:08,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:58:08,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:58:08,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:58:08,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:58:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:58:08,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:58:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:58:08,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:58:08,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867475153] [2022-11-22 02:58:08,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:58:08,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640402092] [2022-11-22 02:58:08,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640402092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:58:08,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [759074535] [2022-11-22 02:58:08,487 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:58:08,488 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:58:08,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:58:08,488 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:58:08,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:58:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,641 INFO L321 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-22 02:58:08,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-22 02:58:08,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,697 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:58:08,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-11-22 02:58:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,888 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-22 02:58:08,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-22 02:58:08,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:08,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-22 02:58:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:09,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:09,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:09,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:09,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:09,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:09,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:09,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:09,133 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-11-22 02:58:09,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 429 treesize of output 424 [2022-11-22 02:58:09,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:58:09,349 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:58:09,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:58:09,464 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-11-22 02:58:09,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-11-22 02:58:09,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:58:09,542 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-22 02:58:09,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-22 02:58:09,659 INFO L321 Elim1Store]: treesize reduction 24, result has 62.5 percent of original size [2022-11-22 02:58:09,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 54 [2022-11-22 02:58:09,774 INFO L321 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2022-11-22 02:58:09,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 68 [2022-11-22 02:58:10,110 INFO L321 Elim1Store]: treesize reduction 63, result has 38.8 percent of original size [2022-11-22 02:58:10,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 93 [2022-11-22 02:58:10,165 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:58:11,090 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3101#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem17#1| 0) 1 0)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 02:58:11,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:58:11,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:58:11,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-22 02:58:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253640407] [2022-11-22 02:58:11,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:58:11,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:58:11,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:58:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:58:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:58:11,092 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:58:11,419 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2022-11-22 02:58:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:58:11,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 02:58:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:58:11,420 INFO L225 Difference]: With dead ends: 94 [2022-11-22 02:58:11,420 INFO L226 Difference]: Without dead ends: 71 [2022-11-22 02:58:11,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:58:11,422 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 50 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:58:11,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 44 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:58:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-22 02:58:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2022-11-22 02:58:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-22 02:58:11,447 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 23 [2022-11-22 02:58:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:58:11,447 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-22 02:58:11,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-22 02:58:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 02:58:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:58:11,449 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:58:11,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:58:11,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:58:11,656 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:58:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:58:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -607830675, now seen corresponding path program 2 times [2022-11-22 02:58:11,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:58:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143367105] [2022-11-22 02:58:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:58:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:58:11,674 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:58:11,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436664384] [2022-11-22 02:58:11,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:58:11,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:58:11,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:58:11,676 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:58:11,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_448db209-9241-4f2a-8f6d-8eddaae37bf4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 02:58:11,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 02:58:11,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:58:11,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-22 02:58:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:58:11,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:58:12,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 02:58:12,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-22 02:58:12,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-22 02:58:12,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-22 02:58:12,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-22 02:58:12,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2022-11-22 02:58:12,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 48 [2022-11-22 02:58:12,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:12,817 INFO L321 Elim1Store]: treesize reduction 22, result has 59.3 percent of original size [2022-11-22 02:58:12,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 81 [2022-11-22 02:58:13,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 177 [2022-11-22 02:58:13,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:13,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 150 [2022-11-22 02:58:14,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:14,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:14,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:14,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:58:14,725 INFO L321 Elim1Store]: treesize reduction 50, result has 61.5 percent of original size [2022-11-22 02:58:14,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 380 treesize of output 248 [2022-11-22 02:59:02,634 WARN L233 SmtUtils]: Spent 26.60s on a formula simplification. DAG size of input: 216 DAG size of output: 148 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:59:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:59:04,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:59:04,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:59:04,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 47 [2022-11-22 02:59:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:59:05,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:59:34,232 WARN L233 SmtUtils]: Spent 18.91s on a formula simplification. DAG size of input: 195 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 03:02:09,694 WARN L233 SmtUtils]: Spent 2.14m on a formula simplification. DAG size of input: 370 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 03:02:49,548 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)