./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur --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 d98e92b0e397ee2afc9955ae7b4baaedb8be19fb7d6475412e7373cae81d62ab --- 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-38b53e6 [2022-11-26 00:37:01,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:37:01,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:37:01,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:37:01,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:37:01,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:37:01,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:37:01,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:37:01,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:37:01,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:37:01,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:37:01,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:37:01,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:37:01,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:37:01,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:37:01,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:37:01,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:37:01,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:37:01,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:37:01,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:37:01,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:37:01,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:37:01,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:37:01,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:37:01,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:37:01,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:37:01,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:37:01,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:37:01,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:37:01,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:37:01,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:37:01,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:37:01,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:37:01,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:37:01,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:37:01,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:37:01,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:37:01,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:37:01,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:37:01,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:37:01,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:37:01,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:37:01,408 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:37:01,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:37:01,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:37:01,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:37:01,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:37:01,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:37:01,411 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:37:01,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:37:01,412 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:37:01,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:37:01,413 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:37:01,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:37:01,413 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:37:01,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:37:01,414 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:37:01,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:37:01,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:37:01,415 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:37:01,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:37:01,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:37:01,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:37:01,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:37:01,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:37:01,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:37:01,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:37:01,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:37:01,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:37:01,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:37:01,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:37:01,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:37:01,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:37:01,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:37:01,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:37:01,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:37:01,423 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:37:01,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:37:01,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:37:01,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:37:01,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:37:01,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:37:01,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:37:01,426 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_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d98e92b0e397ee2afc9955ae7b4baaedb8be19fb7d6475412e7373cae81d62ab [2022-11-26 00:37:01,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:37:01,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:37:01,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:37:01,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:37:01,761 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:37:01,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-tiling/poly2.c [2022-11-26 00:37:05,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:37:05,667 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:37:05,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/sv-benchmarks/c/array-tiling/poly2.c [2022-11-26 00:37:05,676 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/data/c0d226007/27edcf00381b4cacb969fe671d9b494c/FLAG856ab4394 [2022-11-26 00:37:05,707 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/data/c0d226007/27edcf00381b4cacb969fe671d9b494c [2022-11-26 00:37:05,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:37:05,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:37:05,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:37:05,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:37:05,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:37:05,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:37:05" (1/1) ... [2022-11-26 00:37:05,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741341dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:05, skipping insertion in model container [2022-11-26 00:37:05,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:37:05" (1/1) ... [2022-11-26 00:37:05,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:37:05,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:37:05,974 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_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/sv-benchmarks/c/array-tiling/poly2.c[396,409] [2022-11-26 00:37:05,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:37:06,008 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:37:06,025 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_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/sv-benchmarks/c/array-tiling/poly2.c[396,409] [2022-11-26 00:37:06,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:37:06,049 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:37:06,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06 WrapperNode [2022-11-26 00:37:06,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:37:06,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:37:06,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:37:06,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:37:06,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,094 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-11-26 00:37:06,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:37:06,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:37:06,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:37:06,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:37:06,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:37:06,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:37:06,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:37:06,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:37:06,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (1/1) ... [2022-11-26 00:37:06,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:37:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:06,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:37:06,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:37:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:37:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:37:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:37:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:37:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:37:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:37:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:37:06,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:37:06,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:37:06,499 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:37:06,584 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:37:06,584 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-26 00:37:06,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:37:06 BoogieIcfgContainer [2022-11-26 00:37:06,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:37:06,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:37:06,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:37:06,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:37:06,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:37:05" (1/3) ... [2022-11-26 00:37:06,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b9c6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:37:06, skipping insertion in model container [2022-11-26 00:37:06,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:06" (2/3) ... [2022-11-26 00:37:06,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b9c6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:37:06, skipping insertion in model container [2022-11-26 00:37:06,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:37:06" (3/3) ... [2022-11-26 00:37:06,599 INFO L112 eAbstractionObserver]: Analyzing ICFG poly2.c [2022-11-26 00:37:06,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:37:06,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:37:06,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:37:06,760 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e973a5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:37:06,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:37:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:37:06,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:06,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:06,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash 401229897, now seen corresponding path program 1 times [2022-11-26 00:37:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:06,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495655019] [2022-11-26 00:37:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:06,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:07,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:07,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495655019] [2022-11-26 00:37:07,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-26 00:37:07,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810817406] [2022-11-26 00:37:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:07,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:07,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:07,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:37:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:37:07,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:07,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:37:07,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810817406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:07,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:07,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:37:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435108493] [2022-11-26 00:37:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:37:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:37:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:37:07,384 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:07,468 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2022-11-26 00:37:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:37:07,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:37:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:07,486 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:37:07,487 INFO L226 Difference]: Without dead ends: 10 [2022-11-26 00:37:07,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:37:07,500 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:07,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:37:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-26 00:37:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-26 00:37:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-11-26 00:37:07,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2022-11-26 00:37:07,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:07,555 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-11-26 00:37:07,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-11-26 00:37:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:37:07,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:07,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:07,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:37:07,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-26 00:37:07,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash -701699567, now seen corresponding path program 1 times [2022-11-26 00:37:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208781342] [2022-11-26 00:37:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:07,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:07,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946382840] [2022-11-26 00:37:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:07,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:07,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:07,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:07,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:37:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:07,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:37:07,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:08,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:08,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:08,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208781342] [2022-11-26 00:37:08,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:08,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946382840] [2022-11-26 00:37:08,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946382840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:08,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598543341] [2022-11-26 00:37:08,164 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:08,165 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:08,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:08,185 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:08,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:08,442 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:08,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:08,497 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 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-26 00:37:08,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 139 [2022-11-26 00:37:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:08,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:09,152 INFO L321 Elim1Store]: treesize reduction 226, result has 6.2 percent of original size [2022-11-26 00:37:09,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 408 treesize of output 397 [2022-11-26 00:37:09,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-26 00:37:09,382 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:09,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [598543341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:09,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:09,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2022-11-26 00:37:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460221457] [2022-11-26 00:37:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:37:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:37:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:37:09,672 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:09,972 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-26 00:37:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:09,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:37:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:09,974 INFO L225 Difference]: With dead ends: 21 [2022-11-26 00:37:09,974 INFO L226 Difference]: Without dead ends: 16 [2022-11-26 00:37:09,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:37:09,977 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:09,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:37:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-26 00:37:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2022-11-26 00:37:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-26 00:37:09,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-26 00:37:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:09,986 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-26 00:37:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-26 00:37:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:37:09,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:09,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:10,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:37:10,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:10,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash -278806308, now seen corresponding path program 1 times [2022-11-26 00:37:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:10,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810887888] [2022-11-26 00:37:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:10,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:10,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:10,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790229019] [2022-11-26 00:37:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:10,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:10,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:37:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:10,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:37:10,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:37:10,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:37:10,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810887888] [2022-11-26 00:37:10,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790229019] [2022-11-26 00:37:10,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790229019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:10,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [310667769] [2022-11-26 00:37:10,405 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:10,406 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:10,407 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:10,407 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:10,408 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:10,538 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:10,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:10,569 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 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-26 00:37:10,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-26 00:37:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:10,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:37:10,889 INFO L321 Elim1Store]: treesize reduction 213, result has 18.1 percent of original size [2022-11-26 00:37:10,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 35 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 377 treesize of output 391 [2022-11-26 00:37:11,111 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 42 treesize of output 38 [2022-11-26 00:37:11,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:37:11,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:11,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:11,217 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:11,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '228#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:37:11,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:37:11,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:11,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-26 00:37:11,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147006320] [2022-11-26 00:37:11,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:37:11,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:37:11,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:37:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:37:11,534 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:11,582 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-26 00:37:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:37:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:37:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:11,584 INFO L225 Difference]: With dead ends: 19 [2022-11-26 00:37:11,584 INFO L226 Difference]: Without dead ends: 12 [2022-11-26 00:37:11,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:37:11,591 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:11,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:37:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-26 00:37:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-26 00:37:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-26 00:37:11,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-11-26 00:37:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:11,606 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-26 00:37:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-26 00:37:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:37:11,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:11,608 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:11,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-26 00:37:11,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:11,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash 662900900, now seen corresponding path program 2 times [2022-11-26 00:37:11,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:11,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674723882] [2022-11-26 00:37:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:11,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:11,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:11,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765770678] [2022-11-26 00:37:11,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:37:11,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:11,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:11,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:11,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:37:11,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:37:11,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:37:11,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:37:11,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:37:11,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:37:12,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:12,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674723882] [2022-11-26 00:37:12,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:12,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765770678] [2022-11-26 00:37:12,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765770678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:12,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351724262] [2022-11-26 00:37:12,008 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:12,008 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:12,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:12,009 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:12,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:12,113 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-26 00:37:12,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-26 00:37:12,202 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:12,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:12,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-26 00:37:12,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:12,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:37:12,530 INFO L321 Elim1Store]: treesize reduction 213, result has 18.1 percent of original size [2022-11-26 00:37:12,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 35 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 377 treesize of output 391 [2022-11-26 00:37:12,676 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 42 treesize of output 38 [2022-11-26 00:37:12,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:12,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:12,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:12,772 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:13,083 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '340#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:37:13,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:37:13,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:13,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-11-26 00:37:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034216667] [2022-11-26 00:37:13,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:37:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:37:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:37:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:37:13,085 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:13,168 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-26 00:37:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:37:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:13,169 INFO L225 Difference]: With dead ends: 28 [2022-11-26 00:37:13,169 INFO L226 Difference]: Without dead ends: 23 [2022-11-26 00:37:13,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:37:13,171 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:13,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 13 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:37:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-26 00:37:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2022-11-26 00:37:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-26 00:37:13,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-26 00:37:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:13,178 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-26 00:37:13,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-26 00:37:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:37:13,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:13,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:13,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:37:13,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:13,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash -925864791, now seen corresponding path program 3 times [2022-11-26 00:37:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:13,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732380977] [2022-11-26 00:37:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:13,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132727465] [2022-11-26 00:37:13,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:37:13,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:13,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:13,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:13,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:37:13,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:37:13,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:37:13,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-26 00:37:13,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:13,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2022-11-26 00:37:13,605 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:37:13,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-26 00:37:13,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:13,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-26 00:37:13,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:13,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:14,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 49 [2022-11-26 00:37:14,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:14,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2022-11-26 00:37:14,513 INFO L321 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2022-11-26 00:37:14,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 117 treesize of output 81 [2022-11-26 00:37:14,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:14,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 112 [2022-11-26 00:37:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:14,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:14,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732380977] [2022-11-26 00:37:14,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:14,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132727465] [2022-11-26 00:37:14,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132727465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:14,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1636209280] [2022-11-26 00:37:14,663 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:14,663 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:14,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:14,664 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:14,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:14,755 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-26 00:37:14,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-26 00:37:14,842 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:14,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:14,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 139 [2022-11-26 00:37:15,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:15,175 INFO L321 Elim1Store]: treesize reduction 226, result has 6.2 percent of original size [2022-11-26 00:37:15,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 408 treesize of output 397 [2022-11-26 00:37:15,274 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 42 treesize of output 38 [2022-11-26 00:37:15,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:15,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:15,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:15,377 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:15,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '480#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:37:15,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:37:15,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:15,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-26 00:37:15,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78137630] [2022-11-26 00:37:15,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:37:15,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:37:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:15,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:37:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:37:15,825 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) [2022-11-26 00:37:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:16,387 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-26 00:37:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:37:16,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) Word has length 11 [2022-11-26 00:37:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:16,389 INFO L225 Difference]: With dead ends: 50 [2022-11-26 00:37:16,389 INFO L226 Difference]: Without dead ends: 48 [2022-11-26 00:37:16,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:37:16,391 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:16,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 52 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:37:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-26 00:37:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 22. [2022-11-26 00:37:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2022-11-26 00:37:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-11-26 00:37:16,404 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2022-11-26 00:37:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:16,405 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-11-26 00:37:16,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) [2022-11-26 00:37:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-11-26 00:37:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:37:16,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:16,406 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:16,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:37:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:16,613 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1784685993, now seen corresponding path program 4 times [2022-11-26 00:37:16,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:16,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89442802] [2022-11-26 00:37:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:16,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:16,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420051796] [2022-11-26 00:37:16,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:37:16,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:16,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:16,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:16,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:37:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:16,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:37:16,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:16,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:16,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:16,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89442802] [2022-11-26 00:37:16,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:16,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420051796] [2022-11-26 00:37:16,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420051796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:16,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077144651] [2022-11-26 00:37:16,953 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:16,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:16,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:16,954 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:16,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:17,047 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-26 00:37:17,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-26 00:37:17,130 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:17,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:17,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-26 00:37:17,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:17,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:37:17,385 INFO L321 Elim1Store]: treesize reduction 213, result has 18.1 percent of original size [2022-11-26 00:37:17,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 35 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 377 treesize of output 391 [2022-11-26 00:37:17,492 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 42 treesize of output 38 [2022-11-26 00:37:17,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:37:17,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:17,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:17,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:17,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '695#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:37:17,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:37:17,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:17,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-26 00:37:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996740663] [2022-11-26 00:37:17,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:37:17,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:37:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:17,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:37:17,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:37:17,936 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-11-26 00:37:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:18,413 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-11-26 00:37:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:37:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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 13 [2022-11-26 00:37:18,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:18,415 INFO L225 Difference]: With dead ends: 73 [2022-11-26 00:37:18,415 INFO L226 Difference]: Without dead ends: 66 [2022-11-26 00:37:18,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:37:18,417 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:18,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 103 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:37:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-26 00:37:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 27. [2022-11-26 00:37:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-26 00:37:18,433 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 13 [2022-11-26 00:37:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:18,433 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-26 00:37:18,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-11-26 00:37:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-26 00:37:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:37:18,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:18,435 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:18,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:37:18,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:18,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:18,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1107531292, now seen corresponding path program 5 times [2022-11-26 00:37:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:18,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629636345] [2022-11-26 00:37:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:18,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:18,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672416519] [2022-11-26 00:37:18,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:37:18,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:18,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:18,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:18,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:37:18,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 00:37:18,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:37:18,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:37:18,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:19,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:19,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:19,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629636345] [2022-11-26 00:37:19,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:19,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672416519] [2022-11-26 00:37:19,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672416519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:19,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716029503] [2022-11-26 00:37:19,142 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:19,142 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:19,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:19,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:19,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:19,223 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:19,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:19,244 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 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-26 00:37:19,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 139 [2022-11-26 00:37:19,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:19,491 INFO L321 Elim1Store]: treesize reduction 226, result has 6.2 percent of original size [2022-11-26 00:37:19,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 408 treesize of output 397 [2022-11-26 00:37:19,612 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 42 treesize of output 38 [2022-11-26 00:37:19,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:37:19,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:19,680 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:20,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '972#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:37:20,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:37:20,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:20,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-26 00:37:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509538143] [2022-11-26 00:37:20,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:37:20,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:37:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:37:20,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-26 00:37:20,178 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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) [2022-11-26 00:37:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:20,656 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2022-11-26 00:37:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:37:20,657 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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 14 [2022-11-26 00:37:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:20,663 INFO L225 Difference]: With dead ends: 110 [2022-11-26 00:37:20,663 INFO L226 Difference]: Without dead ends: 94 [2022-11-26 00:37:20,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2022-11-26 00:37:20,665 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 158 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:20,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 65 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:37:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-26 00:37:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 46. [2022-11-26 00:37:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 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) [2022-11-26 00:37:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-26 00:37:20,711 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2022-11-26 00:37:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:20,711 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-26 00:37:20,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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) [2022-11-26 00:37:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-26 00:37:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:37:20,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:20,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:20,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:37:20,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:20,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -152789324, now seen corresponding path program 1 times [2022-11-26 00:37:20,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:20,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797075683] [2022-11-26 00:37:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:20,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:20,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680060115] [2022-11-26 00:37:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:20,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:20,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:20,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:37:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:21,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-26 00:37:21,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:21,109 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 13 treesize of output 9 [2022-11-26 00:37:21,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:21,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-26 00:37:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:21,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:21,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 49 [2022-11-26 00:37:21,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:21,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2022-11-26 00:37:22,053 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-26 00:37:22,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 86 treesize of output 50 [2022-11-26 00:37:22,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:22,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-11-26 00:37:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:22,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797075683] [2022-11-26 00:37:22,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680060115] [2022-11-26 00:37:22,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680060115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1235304034] [2022-11-26 00:37:22,205 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:37:22,205 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:22,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:22,206 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:22,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:22,283 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-26 00:37:22,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-26 00:37:22,360 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:22,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:22,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-26 00:37:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:22,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:37:22,608 INFO L321 Elim1Store]: treesize reduction 213, result has 18.1 percent of original size [2022-11-26 00:37:22,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 35 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 377 treesize of output 391 [2022-11-26 00:37:22,705 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 42 treesize of output 38 [2022-11-26 00:37:22,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:22,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:22,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:22,926 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:23,499 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1334#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (<= 1 ~SIZE~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:37:23,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:37:23,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:37:23,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-26 00:37:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296632071] [2022-11-26 00:37:23,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:37:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-26 00:37:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-26 00:37:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:37:23,501 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:25,339 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-11-26 00:37:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-26 00:37:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-26 00:37:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:25,341 INFO L225 Difference]: With dead ends: 69 [2022-11-26 00:37:25,341 INFO L226 Difference]: Without dead ends: 59 [2022-11-26 00:37:25,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=260, Invalid=1902, Unknown=0, NotChecked=0, Total=2162 [2022-11-26 00:37:25,343 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:25,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 73 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:37:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-26 00:37:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2022-11-26 00:37:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 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) [2022-11-26 00:37:25,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-26 00:37:25,362 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 14 [2022-11-26 00:37:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:25,363 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-26 00:37:25,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:37:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-26 00:37:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:37:25,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:25,364 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:25,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-26 00:37:25,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:25,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1360689417, now seen corresponding path program 6 times [2022-11-26 00:37:25,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:25,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211955149] [2022-11-26 00:37:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:25,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:25,586 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:37:25,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318432401] [2022-11-26 00:37:25,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:37:25,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:25,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:25,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:25,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:37:25,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:37:25,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:37:25,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-26 00:37:25,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:25,845 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 [2022-11-26 00:37:25,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:25,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:25,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:25,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-26 00:37:25,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-26 00:37:25,983 INFO L321 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2022-11-26 00:37:25,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 111 [2022-11-26 00:37:26,007 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:37:26,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:37:26,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:26,080 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 1 case distinctions, treesize of input 32 treesize of output 25 [2022-11-26 00:37:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:26,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:37:53,132 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 44 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:37:55,264 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse2 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (* .cse7 8)) (.cse5 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (<= .cse7 2147483647))) (and (or (not .cse0) (forall ((v_ArrVal_203 Int) (v_ArrVal_201 Int) (v_ArrVal_205 Int)) (let ((.cse1 (store (store .cse3 (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) .cse5 v_ArrVal_203))) (or (= (select (store .cse1 .cse2 v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse1 .cse2) (+ v_ArrVal_205 2)))))) (or (forall ((v_ArrVal_203 Int) (v_ArrVal_201 Int) (v_ArrVal_205 Int)) (let ((.cse6 (store (store .cse3 (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_201) .cse5 v_ArrVal_203))) (or (= (select (store .cse6 .cse2 v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse6 .cse2) (+ v_ArrVal_205 2))))) .cse0)))) is different from false [2022-11-26 00:37:57,600 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse17 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse0 (<= .cse19 2147483647)) (.cse18 (* .cse19 8))) (let ((.cse7 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (not .cse0)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (.cse4 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse5 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (* .cse17 8)) (.cse12 (<= .cse17 2147483647))) (and (or (let ((.cse3 (let ((.cse10 (+ .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse9 .cse10 (+ (- 2) (select .cse9 .cse10)))))) (and (or .cse0 (forall ((v_ArrVal_203 Int) (v_ArrVal_201 Int) (v_ArrVal_205 Int)) (let ((.cse1 (store (store .cse3 .cse4 v_ArrVal_201) .cse5 v_ArrVal_203))) (or (< (select .cse1 .cse2) (+ v_ArrVal_205 2)) (= (select (store .cse1 .cse2 v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))) (or (forall ((v_ArrVal_203 Int) (v_ArrVal_201 Int) (v_ArrVal_205 Int)) (let ((.cse6 (store (store .cse3 .cse7 v_ArrVal_201) .cse5 v_ArrVal_203))) (or (= (select (store .cse6 .cse2 v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse6 .cse2) (+ v_ArrVal_205 2))))) .cse8))) (not .cse12)) (or (let ((.cse14 (let ((.cse16 (+ .cse11 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse9 .cse16 (+ (- 2) (select .cse9 .cse16)))))) (and (or (forall ((v_ArrVal_203 Int) (v_ArrVal_201 Int) (v_ArrVal_205 Int)) (let ((.cse13 (store (store .cse14 .cse7 v_ArrVal_201) .cse5 v_ArrVal_203))) (or (= 0 (select (store .cse13 .cse2 v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< (select .cse13 .cse2) (+ v_ArrVal_205 2))))) .cse8) (or .cse0 (forall ((v_ArrVal_203 Int) (v_ArrVal_201 Int) (v_ArrVal_205 Int)) (let ((.cse15 (store (store .cse14 .cse4 v_ArrVal_201) .cse5 v_ArrVal_203))) (or (= (select (store .cse15 .cse2 v_ArrVal_205) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse15 .cse2) (+ v_ArrVal_205 2)))))))) .cse12))))) is different from false [2022-11-26 00:37:58,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 49 [2022-11-26 00:37:58,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:58,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2022-11-26 00:37:58,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:37:58,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1779 treesize of output 1773 [2022-11-26 00:37:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-26 00:37:58,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211955149] [2022-11-26 00:37:58,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:37:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318432401] [2022-11-26 00:37:58,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318432401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:37:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1505122030] [2022-11-26 00:37:58,934 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:37:58,934 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:37:58,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:37:58,935 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:37:58,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:59,049 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:37:59,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:37:59,066 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 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-26 00:37:59,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 139 [2022-11-26 00:37:59,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:37:59,333 INFO L321 Elim1Store]: treesize reduction 226, result has 6.2 percent of original size [2022-11-26 00:37:59,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 408 treesize of output 397 [2022-11-26 00:37:59,419 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 42 treesize of output 38 [2022-11-26 00:37:59,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:59,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:59,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:37:59,507 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:38:00,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1664#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:38:00,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:38:00,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:38:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2022-11-26 00:38:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816956001] [2022-11-26 00:38:00,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:38:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-26 00:38:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-26 00:38:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=552, Unknown=11, NotChecked=98, Total=756 [2022-11-26 00:38:00,208 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2022-11-26 00:38:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:21,636 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2022-11-26 00:38:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-26 00:38:21,637 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) Word has length 15 [2022-11-26 00:38:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:21,639 INFO L225 Difference]: With dead ends: 108 [2022-11-26 00:38:21,640 INFO L226 Difference]: Without dead ends: 106 [2022-11-26 00:38:21,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=182, Invalid=1070, Unknown=16, NotChecked=138, Total=1406 [2022-11-26 00:38:21,641 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:21,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 119 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 255 Invalid, 0 Unknown, 74 Unchecked, 0.7s Time] [2022-11-26 00:38:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-26 00:38:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 58. [2022-11-26 00:38:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:38:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-11-26 00:38:21,676 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 15 [2022-11-26 00:38:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:21,676 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-11-26 00:38:21,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2022-11-26 00:38:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-11-26 00:38:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:38:21,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:21,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:21,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-26 00:38:21,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-26 00:38:21,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash 402306644, now seen corresponding path program 2 times [2022-11-26 00:38:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:21,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384165197] [2022-11-26 00:38:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:21,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:21,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:38:21,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739994402] [2022-11-26 00:38:21,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:38:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:38:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:38:21,919 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:38:21,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:38:22,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:38:22,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:38:22,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-26 00:38:22,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:38:22,313 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 13 treesize of output 9 [2022-11-26 00:38:22,355 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 23 treesize of output 22 [2022-11-26 00:38:22,394 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 23 treesize of output 22 [2022-11-26 00:38:22,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2022-11-26 00:38:22,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:22,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 120 [2022-11-26 00:38:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:22,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 87 treesize of output 28 [2022-11-26 00:38:22,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-26 00:38:22,624 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 23 treesize of output 22 [2022-11-26 00:38:22,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2022-11-26 00:38:22,701 INFO L321 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2022-11-26 00:38:22,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 113 [2022-11-26 00:38:22,760 INFO L321 Elim1Store]: treesize reduction 33, result has 36.5 percent of original size [2022-11-26 00:38:22,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 87 treesize of output 38 [2022-11-26 00:38:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:38:23,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:39:02,249 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:04,456 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse4 (<= .cse11 2147483647)) (.cse10 (* .cse11 8))) (let ((.cse2 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse6 (not .cse4)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse0 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0 1) c_~SIZE~0) (= (select (store (store .cse1 .cse2 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse3) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse4) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse5 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse5)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store .cse1 .cse2 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse3) 1)))) .cse4) (or .cse6 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse7 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7 1) c_~SIZE~0) (= (select (store (store .cse1 .cse8 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse3) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or .cse6 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse1 .cse8 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse3) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))))))) is different from false [2022-11-26 00:39:06,898 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse5 (<= .cse22 2147483647)) (.cse21 (* .cse22 8)) (.cse20 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse13 (<= .cse20 2147483647)) (.cse7 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse4 (not .cse5)) (.cse1 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse12 (* .cse20 8))) (and (or (let ((.cse0 (let ((.cse11 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse10 .cse11 (+ (- 2) (select .cse10 .cse11)))))) (and (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse3 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse0 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse4) (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (= (select (store (store .cse0 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store .cse0 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1)))) .cse4) (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~SIZE~0) (= (select (store (store .cse0 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))))) .cse13) (or (not .cse13) (let ((.cse15 (let ((.cse19 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse10 .cse19 (+ (- 2) (select .cse10 .cse19)))))) (and (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse14 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse14 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse14)) (= (select (store (store .cse15 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse15 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse17 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse15 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse17)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) .cse4) (or .cse4 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse18 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18)) (= (select (store (store .cse15 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))))))))))) is different from false [2022-11-26 00:39:09,979 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse41 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse42 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse18 (<= .cse42 2147483647)) (.cse39 (* 8 .cse42)) (.cse40 (* .cse41 8)) (.cse1 (<= .cse41 2147483647)) (.cse38 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse0 (<= .cse38 2147483647)) (.cse11 (not .cse1)) (.cse15 (+ .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse21 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (not .cse18)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ .cse40 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse6 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse24 (* .cse38 8))) (and (or (not .cse0) (let ((.cse3 (+ .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse1 (and (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse2 (store .cse4 .cse5 v_ArrVal_249))) (store .cse2 .cse3 (+ (- 2) (select .cse2 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (= (select (store (store (let ((.cse10 (store .cse4 .cse5 v_ArrVal_249))) (store .cse10 .cse3 (+ (- 2) (select .cse10 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))))) (or .cse11 (and (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse13 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13)) (= (select (store (store (let ((.cse14 (store .cse4 .cse15 v_ArrVal_249))) (store .cse14 .cse3 (+ (- 2) (select .cse14 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16)) (= (select (store (store (let ((.cse17 (store .cse4 .cse15 v_ArrVal_249))) (store .cse17 .cse3 (+ (- 2) (select .cse17 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or .cse18 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse19 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19 1) c_~SIZE~0) (= (select (store (store (let ((.cse20 (store .cse4 .cse15 v_ArrVal_249))) (store .cse20 .cse3 (+ (- 2) (select .cse20 .cse3)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse22 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (let ((.cse23 (store .cse4 .cse15 v_ArrVal_249))) (store .cse23 .cse3 (+ (- 2) (select .cse23 .cse3)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1)))) .cse18)))))) (or .cse0 (let ((.cse27 (+ .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (and (or .cse11 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse25 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25 1) c_~SIZE~0) (= (select (store (store (let ((.cse26 (store .cse4 .cse15 v_ArrVal_249))) (store .cse26 .cse27 (+ (- 2) (select .cse26 .cse27)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse28 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28)) (= (select (store (store (let ((.cse29 (store .cse4 .cse5 v_ArrVal_249))) (store .cse29 .cse27 (+ (- 2) (select .cse29 .cse27)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse1)) .cse18) (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse30 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (let ((.cse31 (store .cse4 .cse5 v_ArrVal_249))) (store .cse31 .cse27 (+ (- 2) (select .cse31 .cse27)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1))))) (or (and (or .cse11 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse32 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse33 (store .cse4 .cse15 v_ArrVal_249))) (store .cse33 .cse27 (+ (- 2) (select .cse33 .cse27)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or .cse1 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse34 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse35 (store .cse4 .cse5 v_ArrVal_249))) (store .cse35 .cse27 (+ (- 2) (select .cse35 .cse27)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))))) .cse18) (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse37 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse36 (store .cse4 .cse5 v_ArrVal_249))) (store .cse36 .cse27 (+ (- 2) (select .cse36 .cse27)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse37 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse37)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))))))))))) is different from false [2022-11-26 00:39:27,626 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 104 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:27,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 49 [2022-11-26 00:39:27,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:39:27,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2022-11-26 00:39:28,260 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-26 00:39:28,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 538 treesize of output 494 [2022-11-26 00:39:29,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:39:29,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 440 treesize of output 424 [2022-11-26 00:39:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-26 00:39:33,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384165197] [2022-11-26 00:39:33,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:39:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739994402] [2022-11-26 00:39:33,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739994402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:39:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159911425] [2022-11-26 00:39:33,908 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:39:33,909 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:39:33,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:39:33,909 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:39:33,909 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:39:34,005 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:39:34,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:39:34,025 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 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-26 00:39:34,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-26 00:39:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:34,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:39:34,316 INFO L321 Elim1Store]: treesize reduction 213, result has 18.1 percent of original size [2022-11-26 00:39:34,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 35 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 377 treesize of output 391 [2022-11-26 00:39:34,462 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 42 treesize of output 38 [2022-11-26 00:39:34,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:39:34,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:39:34,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:39:34,632 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:39:35,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2082#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (<= 1 ~SIZE~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:39:35,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:39:35,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:39:35,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-11-26 00:39:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098576264] [2022-11-26 00:39:35,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:39:35,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-26 00:39:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-26 00:39:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=968, Unknown=20, NotChecked=198, Total=1332 [2022-11-26 00:39:35,449 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:39:43,781 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse25 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse24 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse47 (mod .cse24 4294967296)) (.cse48 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse49 (mod .cse25 4294967296))) (let ((.cse18 (<= .cse49 2147483647)) (.cse44 (* 8 .cse49)) (.cse45 (* .cse48 8)) (.cse1 (<= .cse48 2147483647)) (.cse46 (* .cse47 8))) (let ((.cse3 (+ .cse46 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (<= .cse47 2147483647)) (.cse11 (not .cse1)) (.cse15 (+ .cse45 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse21 (+ .cse44 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (not .cse18)) (.cse28 (+ .cse46 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ .cse45 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse6 (+ .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (< 1 c_~SIZE~0) (= c_~MAX~0 100000) (or (not .cse0) (and (or .cse1 (and (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse2 (store .cse4 .cse5 v_ArrVal_249))) (store .cse2 .cse3 (+ (- 2) (select .cse2 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (= (select (store (store (let ((.cse10 (store .cse4 .cse5 v_ArrVal_249))) (store .cse10 .cse3 (+ (- 2) (select .cse10 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))))) (or .cse11 (and (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse13 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13)) (= (select (store (store (let ((.cse14 (store .cse4 .cse15 v_ArrVal_249))) (store .cse14 .cse3 (+ (- 2) (select .cse14 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse16 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse16)) (= (select (store (store (let ((.cse17 (store .cse4 .cse15 v_ArrVal_249))) (store .cse17 .cse3 (+ (- 2) (select .cse17 .cse3)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or .cse18 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse19 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19 1) c_~SIZE~0) (= (select (store (store (let ((.cse20 (store .cse4 .cse15 v_ArrVal_249))) (store .cse20 .cse3 (+ (- 2) (select .cse20 .cse3)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse22 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (let ((.cse23 (store .cse4 .cse15 v_ArrVal_249))) (store .cse23 .cse3 (+ (- 2) (select .cse23 .cse3)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1)))) .cse18))))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= c_~SIZE~0 2147483647) (or (not (< .cse24 c_~SIZE~0)) (< .cse25 c_~SIZE~0) (let ((.cse29 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_ArrVal_247 Int) (v_ArrVal_245 Int) (v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse26 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26)) (= (select (store (store (let ((.cse27 (store (store .cse4 .cse5 v_ArrVal_245) .cse28 v_ArrVal_247))) (store (store .cse27 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_249) .cse7 (+ (- 2) (select .cse27 .cse7)))) .cse29 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) (forall ((v_ArrVal_247 Int) (v_ArrVal_245 Int) (v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse30 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30 1) c_~SIZE~0) (= (select (store (store (let ((.cse31 (store (store .cse4 .cse15 v_ArrVal_245) .cse3 v_ArrVal_247))) (store (store .cse31 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_249) .cse7 (+ (select .cse31 .cse7) (- 2)))) .cse29 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse30)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))))) (< c_~SIZE~0 100000) (or .cse0 (and (or (and (or .cse11 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse32 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32 1) c_~SIZE~0) (= (select (store (store (let ((.cse33 (store .cse4 .cse15 v_ArrVal_249))) (store .cse33 .cse28 (+ (- 2) (select .cse33 .cse28)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse34 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34)) (= (select (store (store (let ((.cse35 (store .cse4 .cse5 v_ArrVal_249))) (store .cse35 .cse28 (+ (- 2) (select .cse35 .cse28)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse1)) .cse18) (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse36 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse36 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse36)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (let ((.cse37 (store .cse4 .cse5 v_ArrVal_249))) (store .cse37 .cse28 (+ (- 2) (select .cse37 .cse28)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1))))) (or (and (or .cse11 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse38 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse39 (store .cse4 .cse15 v_ArrVal_249))) (store .cse39 .cse28 (+ (- 2) (select .cse39 .cse28)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or .cse1 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse40 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse40 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse41 (store .cse4 .cse5 v_ArrVal_249))) (store .cse41 .cse28 (+ (- 2) (select .cse41 .cse28)))) .cse21 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse7) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse40)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))))) .cse18) (or .cse12 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse43 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse42 (store .cse4 .cse5 v_ArrVal_249))) (store .cse42 .cse28 (+ (- 2) (select .cse42 .cse28)))) .cse6 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse7) 1) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse43 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse43)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)))))) is different from false [2022-11-26 00:39:50,939 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:06,407 WARN L233 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 168 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:11,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:40:13,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:42:42,720 WARN L233 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 254 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:44,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:42:51,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:42:53,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-26 00:42:56,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-26 00:42:58,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-26 00:43:00,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-26 00:43:02,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-26 00:43:06,010 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse20 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse31 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse32 (mod .cse20 4294967296))) (let ((.cse5 (<= .cse32 2147483647)) (.cse30 (* .cse32 8)) (.cse29 (* .cse31 8))) (let ((.cse11 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (< |c_ULTIMATE.start_main_~i~0#1| c_~SIZE~0)) (.cse17 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse12 (<= .cse31 2147483647)) (.cse7 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse4 (not .cse5)) (.cse1 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse16 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (= c_~MAX~0 100000) (<= c_~SIZE~0 2147483647) (or (let ((.cse0 (store .cse10 .cse11 (+ (- 2) (select .cse10 .cse11))))) (and (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse3 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse0 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse4) (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (= (select (store (store .cse0 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse8 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse8)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store .cse0 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1)))) .cse4) (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~SIZE~0) (= (select (store (store .cse0 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))))) .cse12) (or (and (= (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|) 1) (< (+ (* (div (+ (- 2) c_~SIZE~0) 4294967296) 4294967296) 2) c_~SIZE~0)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~SIZE~0) (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~SIZE~0))) (or (not .cse13) (and (forall ((v_ArrVal_247 Int) (v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse14 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse14 1) c_~SIZE~0) (= (select (store (store (let ((.cse15 (store .cse10 .cse16 v_ArrVal_247))) (store (store .cse15 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_249) .cse2 (+ (- 2) (select .cse15 .cse2)))) .cse17 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse14)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) (forall ((v_ArrVal_247 Int) (v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse18 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18)) (= (select (store (store (let ((.cse19 (store .cse10 .cse11 v_ArrVal_247))) (store (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_249) .cse2 (+ (- 2) (select .cse19 .cse2)))) .cse17 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (< .cse20 c_~SIZE~0)) (or .cse13 (let ((.cse22 (+ (select .cse10 .cse2) (- 2)))) (and (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse21 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse21 1) c_~SIZE~0) (= (select (store (store (store (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_249) .cse2 .cse22) .cse17 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse21)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_249 Int)) (let ((.cse23 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23)) (= (select (store (store (store (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| v_ArrVal_249) .cse2 .cse22) .cse17 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))))) (or (not .cse12) (let ((.cse25 (store .cse10 .cse16 (+ (- 2) (select .cse10 .cse16))))) (and (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse24 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse24 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse24)) (= (select (store (store .cse25 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or .cse5 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse26 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse25 .cse7 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (or (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse27 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse27 1) c_~SIZE~0) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store .cse25 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_255) .cse2) 1) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse27)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) .cse4) (or .cse4 (forall ((v_ArrVal_255 Int) (v_ArrVal_254 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse28 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28 1) c_~SIZE~0) (<= c_~SIZE~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse28)) (= (select (store (store .cse25 .cse1 v_ArrVal_254) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_255) .cse2) 1) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))))))))))) is different from false [2022-11-26 00:43:13,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:43:30,182 WARN L233 SmtUtils]: Spent 13.88s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:32,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-26 00:43:46,444 WARN L233 SmtUtils]: Spent 12.19s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:59,691 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:14,484 WARN L233 SmtUtils]: Spent 12.53s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:25,187 WARN L233 SmtUtils]: Spent 10.52s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:37,466 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:50,200 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:04,070 WARN L233 SmtUtils]: Spent 11.73s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:16,374 WARN L233 SmtUtils]: Spent 12.17s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:34,909 WARN L233 SmtUtils]: Spent 12.10s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:47,266 WARN L233 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 90 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:52,229 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2022-11-26 00:45:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-26 00:45:52,230 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:45:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:52,231 INFO L225 Difference]: With dead ends: 90 [2022-11-26 00:45:52,231 INFO L226 Difference]: Without dead ends: 88 [2022-11-26 00:45:52,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 417.7s TimeCoverageRelationStatistics Valid=634, Invalid=4447, Unknown=51, NotChecked=720, Total=5852 [2022-11-26 00:45:52,233 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 108 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 51 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:52,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 169 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 481 Invalid, 11 Unknown, 106 Unchecked, 26.2s Time] [2022-11-26 00:45:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-26 00:45:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 61. [2022-11-26 00:45:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2022-11-26 00:45:52,276 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 18 [2022-11-26 00:45:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:52,276 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2022-11-26 00:45:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2022-11-26 00:45:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:45:52,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:52,277 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:45:52,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:52,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:52,480 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 491170569, now seen corresponding path program 7 times [2022-11-26 00:45:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:52,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747410073] [2022-11-26 00:45:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:52,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:45:52,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441640537] [2022-11-26 00:45:52,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:45:52,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:52,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:52,504 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:52,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 00:45:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:52,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:45:52,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:52,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:52,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:45:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747410073] [2022-11-26 00:45:52,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:45:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441640537] [2022-11-26 00:45:52,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441640537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1298749112] [2022-11-26 00:45:52,941 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:45:52,942 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:45:52,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:45:52,943 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:45:52,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:45:53,005 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:45:53,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:45:53,018 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 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-26 00:45:53,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 139 [2022-11-26 00:45:53,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:53,241 INFO L321 Elim1Store]: treesize reduction 226, result has 6.2 percent of original size [2022-11-26 00:45:53,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 408 treesize of output 397 [2022-11-26 00:45:53,308 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 42 treesize of output 38 [2022-11-26 00:45:53,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-26 00:45:53,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:45:53,373 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:45:53,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2543#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:45:53,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:45:53,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:45:53,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2022-11-26 00:45:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708928474] [2022-11-26 00:45:53,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:45:53,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:45:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:45:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:45:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-11-26 00:45:53,849 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:54,732 INFO L93 Difference]: Finished difference Result 160 states and 177 transitions. [2022-11-26 00:45:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-26 00:45:54,733 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:45:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:54,734 INFO L225 Difference]: With dead ends: 160 [2022-11-26 00:45:54,734 INFO L226 Difference]: Without dead ends: 139 [2022-11-26 00:45:54,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=625, Invalid=2237, Unknown=0, NotChecked=0, Total=2862 [2022-11-26 00:45:54,736 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 165 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:54,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 311 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:45:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-26 00:45:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 59. [2022-11-26 00:45:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 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) [2022-11-26 00:45:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-11-26 00:45:54,772 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 19 [2022-11-26 00:45:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-11-26 00:45:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:45:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-11-26 00:45:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:45:54,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:54,774 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:45:54,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:54,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:54,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1084591428, now seen corresponding path program 8 times [2022-11-26 00:45:54,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621815464] [2022-11-26 00:45:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:54,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:45:54,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731572515] [2022-11-26 00:45:54,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:45:54,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:54,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:54,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:54,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-26 00:45:56,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-26 00:45:56,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:56,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:45:56,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:56,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:56,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:45:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621815464] [2022-11-26 00:45:56,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:45:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731572515] [2022-11-26 00:45:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731572515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:56,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1003705940] [2022-11-26 00:45:56,480 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:45:56,480 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:45:56,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:45:56,481 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:45:56,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:45:56,567 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-26 00:45:56,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-26 00:45:56,646 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:45:56,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:45:56,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 139 [2022-11-26 00:45:56,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:56,858 INFO L321 Elim1Store]: treesize reduction 226, result has 6.2 percent of original size [2022-11-26 00:45:56,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 408 treesize of output 397 [2022-11-26 00:45:56,933 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 42 treesize of output 38 [2022-11-26 00:45:56,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:45:56,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:45:57,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:45:57,019 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:45:57,554 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3055#(and (= |ULTIMATE.start_main_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8)))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem10#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:45:57,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:45:57,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:45:57,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2022-11-26 00:45:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561954606] [2022-11-26 00:45:57,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:45:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-26 00:45:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:45:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-26 00:45:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:45:57,556 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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) [2022-11-26 00:45:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:58,293 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2022-11-26 00:45:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-26 00:45:58,294 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:45:58,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:58,294 INFO L225 Difference]: With dead ends: 176 [2022-11-26 00:45:58,295 INFO L226 Difference]: Without dead ends: 163 [2022-11-26 00:45:58,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=527, Invalid=1923, Unknown=0, NotChecked=0, Total=2450 [2022-11-26 00:45:58,296 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 263 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:58,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 129 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:45:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-26 00:45:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 83. [2022-11-26 00:45:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 82 states have internal predecessors, (97), 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) [2022-11-26 00:45:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-11-26 00:45:58,342 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 19 [2022-11-26 00:45:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:58,343 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-11-26 00:45:58,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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) [2022-11-26 00:45:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-11-26 00:45:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:45:58,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:58,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:45:58,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:58,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash -923721124, now seen corresponding path program 3 times [2022-11-26 00:45:58,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:58,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782802628] [2022-11-26 00:45:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:58,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:58,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:45:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733406192] [2022-11-26 00:45:58,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:45:58,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:58,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:58,561 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:58,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-26 00:45:58,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:45:58,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:58,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-26 00:45:58,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:58,733 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 13 treesize of output 9 [2022-11-26 00:45:58,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-26 00:45:58,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2022-11-26 00:45:58,791 INFO L321 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2022-11-26 00:45:58,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 113 [2022-11-26 00:45:58,824 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-26 00:45:58,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 87 treesize of output 28 [2022-11-26 00:45:58,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-26 00:45:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:45:58,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:59,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 49 [2022-11-26 00:45:59,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:45:59,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2022-11-26 00:46:00,143 INFO L321 Elim1Store]: treesize reduction 24, result has 55.6 percent of original size [2022-11-26 00:46:00,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 62 [2022-11-26 00:46:00,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:00,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2022-11-26 00:46:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:46:00,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782802628] [2022-11-26 00:46:00,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:46:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733406192] [2022-11-26 00:46:00,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733406192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:46:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [768511651] [2022-11-26 00:46:00,324 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:46:00,324 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:00,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:00,324 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:00,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:46:00,392 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-26 00:46:00,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-26 00:46:00,449 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:46:00,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-26 00:46:00,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-11-26 00:46:00,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:00,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:00,627 INFO L321 Elim1Store]: treesize reduction 213, result has 18.1 percent of original size [2022-11-26 00:46:00,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 35 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 377 treesize of output 391 [2022-11-26 00:46:00,736 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 42 treesize of output 38 [2022-11-26 00:46:00,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:46:00,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:46:00,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 32 [2022-11-26 00:46:00,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:46:01,422 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3630#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (<= 1 ~SIZE~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:46:01,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:46:01,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:46:01,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2022-11-26 00:46:01,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833524341] [2022-11-26 00:46:01,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:46:01,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-26 00:46:01,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-26 00:46:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:46:01,424 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 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) [2022-11-26 00:46:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:02,395 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2022-11-26 00:46:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:46:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 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 19 [2022-11-26 00:46:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:02,397 INFO L225 Difference]: With dead ends: 114 [2022-11-26 00:46:02,397 INFO L226 Difference]: Without dead ends: 100 [2022-11-26 00:46:02,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:46:02,398 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:02,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 113 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:46:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-26 00:46:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2022-11-26 00:46:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 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) [2022-11-26 00:46:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2022-11-26 00:46:02,444 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 19 [2022-11-26 00:46:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:02,444 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2022-11-26 00:46:02,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 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) [2022-11-26 00:46:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2022-11-26 00:46:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 00:46:02,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:02,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:02,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-26 00:46:02,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:02,646 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1691189857, now seen corresponding path program 4 times [2022-11-26 00:46:02,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:02,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529874052] [2022-11-26 00:46:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:02,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:46:02,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704986903] [2022-11-26 00:46:02,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:46:02,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:02,662 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:02,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb04c4ff-a95b-44b4-aad0-5ab1a00e4619/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-26 00:46:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-26 00:46:03,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:03,046 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 [2022-11-26 00:46:03,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2022-11-26 00:46:03,074 INFO L321 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2022-11-26 00:46:03,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 127 [2022-11-26 00:46:03,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:03,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 81 treesize of output 22 [2022-11-26 00:46:03,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:03,141 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:03,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 65 [2022-11-26 00:46:03,182 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-26 00:46:03,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 121 [2022-11-26 00:46:03,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:03,231 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:03,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:03,276 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 1 case distinctions, treesize of input 34 treesize of output 25 [2022-11-26 00:46:03,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:03,304 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 1 case distinctions, treesize of input 38 treesize of output 25 [2022-11-26 00:46:03,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:03,332 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:03,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 65 [2022-11-26 00:46:03,377 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-26 00:46:03,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 121 [2022-11-26 00:46:03,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:03,455 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-26 00:46:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:46:03,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:07,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 49 [2022-11-26 00:46:07,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:07,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2022-11-26 00:46:07,660 INFO L321 Elim1Store]: treesize reduction 24, result has 55.6 percent of original size [2022-11-26 00:46:07,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 3387 treesize of output 3336 [2022-11-26 00:46:29,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:46:29,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26323 treesize of output 26050