./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS --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 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 --- 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-8393723 [2022-11-19 07:28:14,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:28:14,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:28:14,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:28:14,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:28:14,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:28:14,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:28:14,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:28:14,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:28:14,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:28:14,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:28:14,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:28:14,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:28:14,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:28:14,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:28:14,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:28:14,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:28:14,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:28:14,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:28:14,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:28:14,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:28:14,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:28:14,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:28:14,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:28:14,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:28:14,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:28:14,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:28:14,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:28:14,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:28:14,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:28:14,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:28:14,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:28:14,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:28:14,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:28:14,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:28:14,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:28:14,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:28:14,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:28:14,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:28:14,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:28:14,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:28:14,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:28:14,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:28:14,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:28:14,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:28:14,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:28:14,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:28:14,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:28:14,421 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:28:14,421 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:28:14,421 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:28:14,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:28:14,422 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:28:14,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:28:14,422 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:28:14,422 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:28:14,423 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:28:14,423 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:28:14,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:28:14,423 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:28:14,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:28:14,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:28:14,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:28:14,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:28:14,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:28:14,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:28:14,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:28:14,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:28:14,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:28:14,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:28:14,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:28:14,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:28:14,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:28:14,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:28:14,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:14,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:28:14,432 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:28:14,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:28:14,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:28:14,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:28:14,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:28:14,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:28:14,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:28:14,435 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_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 [2022-11-19 07:28:14,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:28:14,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:28:14,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:28:14,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:28:14,715 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:28:14,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-fpi/eqn1.c [2022-11-19 07:28:14,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/data/277df162d/227f228ab6df47abb05aae8f8dde3d4c/FLAGc837c0a55 [2022-11-19 07:28:15,244 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:28:15,245 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/sv-benchmarks/c/array-fpi/eqn1.c [2022-11-19 07:28:15,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/data/277df162d/227f228ab6df47abb05aae8f8dde3d4c/FLAGc837c0a55 [2022-11-19 07:28:15,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/data/277df162d/227f228ab6df47abb05aae8f8dde3d4c [2022-11-19 07:28:15,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:28:15,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:28:15,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:15,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:28:15,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:28:15,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:15" (1/1) ... [2022-11-19 07:28:15,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8600f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:15, skipping insertion in model container [2022-11-19 07:28:15,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:15" (1/1) ... [2022-11-19 07:28:15,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:28:15,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:28:16,105 WARN L234 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_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/sv-benchmarks/c/array-fpi/eqn1.c[587,600] [2022-11-19 07:28:16,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:16,171 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:28:16,194 WARN L234 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_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/sv-benchmarks/c/array-fpi/eqn1.c[587,600] [2022-11-19 07:28:16,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:16,233 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:28:16,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16 WrapperNode [2022-11-19 07:28:16,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:16,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:16,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:28:16,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:28:16,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,280 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-19 07:28:16,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:16,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:28:16,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:28:16,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:28:16,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:28:16,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:28:16,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:28:16,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:28:16,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (1/1) ... [2022-11-19 07:28:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:16,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:16,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:28:16,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:28:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:28:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:28:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:28:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:28:16,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:28:16,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:28:16,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:28:16,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:28:16,511 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:28:16,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:28:16,779 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:28:16,779 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:28:16,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:16 BoogieIcfgContainer [2022-11-19 07:28:16,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:28:16,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:28:16,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:28:16,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:28:16,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:28:15" (1/3) ... [2022-11-19 07:28:16,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600d9cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:16, skipping insertion in model container [2022-11-19 07:28:16,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:16" (2/3) ... [2022-11-19 07:28:16,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600d9cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:16, skipping insertion in model container [2022-11-19 07:28:16,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:16" (3/3) ... [2022-11-19 07:28:16,795 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn1.c [2022-11-19 07:28:16,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:28:16,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:28:16,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:28:16,896 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;@5dd83a91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:28:16,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:28:16,902 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) [2022-11-19 07:28:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:28:16,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:16,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:16,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash -794748304, now seen corresponding path program 1 times [2022-11-19 07:28:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:16,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766970294] [2022-11-19 07:28:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:16,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:17,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:17,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503342389] [2022-11-19 07:28:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:17,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:17,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:17,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:17,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:28:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:17,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:28:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:17,448 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 07:28:17,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-19 07:28:17,492 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 8 treesize of output 7 [2022-11-19 07:28:17,515 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 8 treesize of output 7 [2022-11-19 07:28:17,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:28:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:17,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:28:17,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766970294] [2022-11-19 07:28:17,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:17,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503342389] [2022-11-19 07:28:17,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503342389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:17,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:17,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:17,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936383157] [2022-11-19 07:28:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:17,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:17,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:17,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:17,892 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-19 07:28:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:18,081 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-19 07:28:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:18,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2022-11-19 07:28:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:18,092 INFO L225 Difference]: With dead ends: 35 [2022-11-19 07:28:18,092 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 07:28:18,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:28:18,098 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:18,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 19 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 07:28:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-19 07:28:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-11-19 07:28:18,133 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2022-11-19 07:28:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:18,134 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-19 07:28:18,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-19 07:28:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2022-11-19 07:28:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:28:18,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:18,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:18,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:18,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 07:28:18,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1127926275, now seen corresponding path program 1 times [2022-11-19 07:28:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:18,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483006053] [2022-11-19 07:28:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:18,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:18,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819390091] [2022-11-19 07:28:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:18,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:18,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:28:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:18,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:28:18,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:18,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:28:18,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:18,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483006053] [2022-11-19 07:28:18,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:18,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819390091] [2022-11-19 07:28:18,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819390091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:18,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:18,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:28:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829534723] [2022-11-19 07:28:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:18,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:28:18,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:28:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:28:18,499 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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) [2022-11-19 07:28:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:18,555 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-19 07:28:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:28:18,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 [2022-11-19 07:28:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:18,556 INFO L225 Difference]: With dead ends: 25 [2022-11-19 07:28:18,556 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:28:18,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:18,558 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:18,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:28:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:28:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-19 07:28:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-19 07:28:18,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2022-11-19 07:28:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:18,564 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-19 07:28:18,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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) [2022-11-19 07:28:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-19 07:28:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:28:18,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:18,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:18,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:18,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-19 07:28:18,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:18,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash 849022933, now seen corresponding path program 1 times [2022-11-19 07:28:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:18,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919052315] [2022-11-19 07:28:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:18,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:18,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868735847] [2022-11-19 07:28:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:18,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:18,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:18,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:28:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:18,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:28:18,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:18,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:18,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:18,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919052315] [2022-11-19 07:28:18,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:18,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868735847] [2022-11-19 07:28:18,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868735847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:18,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543434335] [2022-11-19 07:28:19,002 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:19,003 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:19,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:19,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:19,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:19,250 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:19,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:19,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:28:19,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:28:19,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:28:19,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:19,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:19,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:19,803 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 07:28:19,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 534 [2022-11-19 07:28:20,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:20,140 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 63 treesize of output 63 [2022-11-19 07:28:20,170 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:20,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '238#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (<= ~N~0 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:20,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:20,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:20,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-19 07:28:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588514373] [2022-11-19 07:28:20,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:28:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:28:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:28:20,574 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:20,687 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-19 07:28:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:28:20,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:28:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:20,688 INFO L225 Difference]: With dead ends: 29 [2022-11-19 07:28:20,688 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 07:28:20,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:28:20,690 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:20,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 07:28:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2022-11-19 07:28:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-19 07:28:20,697 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-11-19 07:28:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:20,697 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-19 07:28:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-19 07:28:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:28:20,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:20,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:20,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:20,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:20,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 545227070, now seen corresponding path program 1 times [2022-11-19 07:28:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:20,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064147264] [2022-11-19 07:28:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:20,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:20,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165167988] [2022-11-19 07:28:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:20,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:20,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:20,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:28:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:21,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:28:21,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:21,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:28:21,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:21,123 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 14 treesize of output 14 [2022-11-19 07:28:21,127 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 8 treesize of output 7 [2022-11-19 07:28:21,151 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 14 treesize of output 16 [2022-11-19 07:28:21,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:28:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:21,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:21,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:21,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064147264] [2022-11-19 07:28:21,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:21,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165167988] [2022-11-19 07:28:21,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165167988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:21,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1662747614] [2022-11-19 07:28:21,501 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:21,501 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:21,502 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:21,502 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:21,503 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:21,721 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 07:28:21,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-19 07:28:21,845 INFO L321 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-19 07:28:21,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-19 07:28:22,046 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:22,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:22,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:28:22,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,505 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:28:22,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-19 07:28:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,662 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 63 treesize of output 63 [2022-11-19 07:28:22,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,696 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:22,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,796 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:28:22,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:28:22,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:22,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:22,855 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:22,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:22,878 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:23,271 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '368#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:23,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:23,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:23,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-19 07:28:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753662593] [2022-11-19 07:28:23,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:28:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:28:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:28:23,273 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2022-11-19 07:28:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:23,521 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-19 07:28:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:28:23,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 07:28:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:23,522 INFO L225 Difference]: With dead ends: 31 [2022-11-19 07:28:23,523 INFO L226 Difference]: Without dead ends: 29 [2022-11-19 07:28:23,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:28:23,525 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:23,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 18 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2022-11-19 07:28:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-19 07:28:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 15. [2022-11-19 07:28:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-19 07:28:23,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2022-11-19 07:28:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:23,532 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-19 07:28:23,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2022-11-19 07:28:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-19 07:28:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:28:23,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:23,534 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:23,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:23,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:23,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1813092602, now seen corresponding path program 1 times [2022-11-19 07:28:23,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:23,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310162665] [2022-11-19 07:28:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:23,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:23,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541687246] [2022-11-19 07:28:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:23,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:28:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:23,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:28:23,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:23,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:28:23,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:23,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310162665] [2022-11-19 07:28:23,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:23,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541687246] [2022-11-19 07:28:23,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541687246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:23,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:23,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:28:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668674575] [2022-11-19 07:28:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:28:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:28:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:28:23,957 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:24,042 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-19 07:28:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:28:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:24,044 INFO L225 Difference]: With dead ends: 29 [2022-11-19 07:28:24,044 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:28:24,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:28:24,046 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:24,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:28:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2022-11-19 07:28:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-11-19 07:28:24,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 10 [2022-11-19 07:28:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:24,052 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-11-19 07:28:24,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-11-19 07:28:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:28:24,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:24,053 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:24,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:24,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:24,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash -282510091, now seen corresponding path program 2 times [2022-11-19 07:28:24,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:24,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727642970] [2022-11-19 07:28:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:24,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:24,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718215409] [2022-11-19 07:28:24,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:28:24,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:24,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:24,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:28:24,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:28:24,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:28:24,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:28:24,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:24,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:24,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727642970] [2022-11-19 07:28:24,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:24,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718215409] [2022-11-19 07:28:24,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718215409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:24,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071809500] [2022-11-19 07:28:24,468 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:24,468 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:24,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:24,469 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:24,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:24,599 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:24,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:24,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:28:24,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:28:24,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:24,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:28:24,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:24,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:24,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:24,961 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:28:24,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-19 07:28:25,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:25,074 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 63 treesize of output 63 [2022-11-19 07:28:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:25,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:25,112 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:25,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-19 07:28:25,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:25,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:25,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:25,156 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:25,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:25,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:25,211 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:25,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:25,230 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:25,643 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '612#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:25,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:25,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:25,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-19 07:28:25,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770335212] [2022-11-19 07:28:25,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:25,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:28:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:28:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:28:25,645 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2022-11-19 07:28:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:25,735 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-19 07:28:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:28:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) Word has length 10 [2022-11-19 07:28:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:25,737 INFO L225 Difference]: With dead ends: 33 [2022-11-19 07:28:25,737 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:28:25,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:28:25,738 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:25,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:28:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-11-19 07:28:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-19 07:28:25,742 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-11-19 07:28:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:25,743 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-19 07:28:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2022-11-19 07:28:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-19 07:28:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:28:25,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:25,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:25,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:25,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:28:25,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1910697616, now seen corresponding path program 3 times [2022-11-19 07:28:25,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:25,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723317990] [2022-11-19 07:28:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:25,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:25,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:25,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767686697] [2022-11-19 07:28:25,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:28:25,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:25,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:25,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:26,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:28:26,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:28:26,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:28:26,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-19 07:28:26,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:26,228 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 07:28:26,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-19 07:28:26,237 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 8 treesize of output 7 [2022-11-19 07:28:26,244 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 8 treesize of output 7 [2022-11-19 07:28:26,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:26,274 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 5 [2022-11-19 07:28:26,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:28:26,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:28:26,334 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 14 treesize of output 16 [2022-11-19 07:28:26,361 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 14 treesize of output 16 [2022-11-19 07:28:26,409 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 [2022-11-19 07:28:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:26,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:26,419 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 57 treesize of output 116 [2022-11-19 07:28:26,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:26,449 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 85 treesize of output 26 [2022-11-19 07:28:26,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:26,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:28:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:26,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:28:26,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:26,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723317990] [2022-11-19 07:28:26,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:26,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767686697] [2022-11-19 07:28:26,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767686697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:26,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167104152] [2022-11-19 07:28:26,934 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:26,934 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:26,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:26,935 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:26,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:27,163 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:27,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:27,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:28:27,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:28:27,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:28:27,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:27,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:27,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:27,689 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 07:28:27,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 524 treesize of output 534 [2022-11-19 07:28:28,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,009 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 63 treesize of output 63 [2022-11-19 07:28:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:28,052 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:28,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:28,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:28,156 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:28:28,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:28:28,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:28,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:28,217 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:28,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:28,247 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:28,661 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '770#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:28,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:28,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:28,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-19 07:28:28,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452228080] [2022-11-19 07:28:28,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:28,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 07:28:28,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:28,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 07:28:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=312, Unknown=1, NotChecked=0, Total=380 [2022-11-19 07:28:28,663 INFO L87 Difference]: Start difference. First operand 17 states and 21 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) [2022-11-19 07:28:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:28,913 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-11-19 07:28:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:28:28,914 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 11 [2022-11-19 07:28:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:28,914 INFO L225 Difference]: With dead ends: 29 [2022-11-19 07:28:28,914 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:28:28,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=416, Unknown=1, NotChecked=0, Total=506 [2022-11-19 07:28:28,916 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:28,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-19 07:28:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:28:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-19 07:28:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2022-11-19 07:28:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-19 07:28:28,923 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2022-11-19 07:28:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:28,923 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-19 07:28:28,924 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) [2022-11-19 07:28:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-19 07:28:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:28:28,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:28,925 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:28,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:29,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:28:29,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash -701556884, now seen corresponding path program 1 times [2022-11-19 07:28:29,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015482440] [2022-11-19 07:28:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:29,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:29,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563672829] [2022-11-19 07:28:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:29,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:29,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:29,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:28:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:29,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-19 07:28:29,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:29,360 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 07:28:29,360 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 07:28:29,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 07:28:29,398 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-19 07:28:29,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 43 treesize of output 68 [2022-11-19 07:28:29,413 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 8 treesize of output 7 [2022-11-19 07:28:29,455 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 0 case distinctions, treesize of input 62 treesize of output 79 [2022-11-19 07:28:29,530 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 71 treesize of output 52 [2022-11-19 07:28:29,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:29,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-11-19 07:28:29,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:28:29,733 INFO L321 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2022-11-19 07:28:29,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 105 [2022-11-19 07:28:29,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:29,739 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-11-19 07:28:29,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:29,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:29,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 48 treesize of output 52 [2022-11-19 07:28:29,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:29,832 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:29,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-19 07:28:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:29,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:30,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015482440] [2022-11-19 07:28:30,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563672829] [2022-11-19 07:28:30,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563672829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2635781] [2022-11-19 07:28:30,619 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:28:30,619 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:30,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:30,620 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:30,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:30,766 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 07:28:30,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-19 07:28:30,855 INFO L321 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-19 07:28:30,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-19 07:28:31,002 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:31,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:31,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:28:31,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:31,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:31,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,287 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:28:31,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-19 07:28:31,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,394 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 63 treesize of output 63 [2022-11-19 07:28:31,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:31,433 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:31,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-19 07:28:31,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:31,475 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:31,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:31,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:31,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:31,526 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:31,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:31,597 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:32,270 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '941#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:32,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:32,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:32,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-19 07:28:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876209426] [2022-11-19 07:28:32,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:32,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 07:28:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 07:28:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:28:32,273 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-11-19 07:28:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:33,016 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-11-19 07:28:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:28:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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 12 [2022-11-19 07:28:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:33,017 INFO L225 Difference]: With dead ends: 34 [2022-11-19 07:28:33,018 INFO L226 Difference]: Without dead ends: 32 [2022-11-19 07:28:33,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2022-11-19 07:28:33,019 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 56 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:33,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 37 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-19 07:28:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-19 07:28:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2022-11-19 07:28:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-11-19 07:28:33,026 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2022-11-19 07:28:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:33,026 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-11-19 07:28:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-11-19 07:28:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-11-19 07:28:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:28:33,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:33,027 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:33,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-19 07:28:33,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:33,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:33,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1915831248, now seen corresponding path program 4 times [2022-11-19 07:28:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:33,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114960707] [2022-11-19 07:28:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:33,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:33,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:33,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502773489] [2022-11-19 07:28:33,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:28:33,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:33,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:33,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:28:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:33,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:28:33,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:28:33,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:28:33,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:33,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114960707] [2022-11-19 07:28:33,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:33,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502773489] [2022-11-19 07:28:33,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502773489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:33,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166558734] [2022-11-19 07:28:33,463 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:33,463 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:33,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:33,464 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:33,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:33,575 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 07:28:33,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-19 07:28:33,713 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:33,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:33,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:28:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:28:33,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:33,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:33,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:33,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,047 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 07:28:34,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 527 [2022-11-19 07:28:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,243 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 63 treesize of output 63 [2022-11-19 07:28:34,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,262 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:34,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-19 07:28:34,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:34,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:34,410 INFO L321 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-11-19 07:28:34,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 146 treesize of output 182 [2022-11-19 07:28:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:34,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:34,472 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:34,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:34,491 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:34,796 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1132#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:34,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:34,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:34,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-19 07:28:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282576347] [2022-11-19 07:28:34,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:28:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:28:34,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:28:34,798 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:35,021 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2022-11-19 07:28:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:28:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:28:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:35,022 INFO L225 Difference]: With dead ends: 61 [2022-11-19 07:28:35,022 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 07:28:35,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:28:35,023 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:35,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 35 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 07:28:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2022-11-19 07:28:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-19 07:28:35,031 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2022-11-19 07:28:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:35,031 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-19 07:28:35,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-19 07:28:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:28:35,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:35,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:35,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:35,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2021672665, now seen corresponding path program 2 times [2022-11-19 07:28:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:35,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051360756] [2022-11-19 07:28:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:35,264 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:35,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054064387] [2022-11-19 07:28:35,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:28:35,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:35,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:35,272 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:35,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:28:35,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:28:35,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:28:35,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:28:35,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:28:35,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:28:35,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:35,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051360756] [2022-11-19 07:28:35,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:35,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054064387] [2022-11-19 07:28:35,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054064387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:35,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2107925136] [2022-11-19 07:28:35,440 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:28:35,440 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:35,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:35,440 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:35,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:35,521 INFO L321 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-19 07:28:35,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-19 07:28:35,635 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:35,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:35,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:28:35,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:28:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:35,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:35,936 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:28:35,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-19 07:28:36,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,040 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 63 treesize of output 63 [2022-11-19 07:28:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:36,069 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:36,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:36,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:36,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:36,142 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:28:36,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:28:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:36,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:36,197 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:36,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:36,267 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:36,686 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1365#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:36,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:36,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:36,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-19 07:28:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614586507] [2022-11-19 07:28:36,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:28:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:28:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:28:36,688 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2022-11-19 07:28:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:36,796 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-19 07:28:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:28:36,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:28:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:36,797 INFO L225 Difference]: With dead ends: 38 [2022-11-19 07:28:36,797 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:28:36,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:28:36,798 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:36,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 19 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:28:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-11-19 07:28:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2022-11-19 07:28:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-19 07:28:36,805 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-19 07:28:36,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:36,805 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-19 07:28:36,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2022-11-19 07:28:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-19 07:28:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:28:36,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:36,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:36,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:28:37,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -385990150, now seen corresponding path program 3 times [2022-11-19 07:28:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:37,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912345572] [2022-11-19 07:28:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:37,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:37,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776081555] [2022-11-19 07:28:37,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:28:37,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:37,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:37,050 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:37,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:28:37,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:28:37,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:28:37,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 07:28:37,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:37,339 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 07:28:37,339 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 07:28:37,369 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-19 07:28:37,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 71 [2022-11-19 07:28:37,377 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 8 treesize of output 7 [2022-11-19 07:28:37,394 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 8 treesize of output 7 [2022-11-19 07:28:37,414 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 16 treesize of output 5 [2022-11-19 07:28:37,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:28:37,429 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 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-19 07:28:37,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:37,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 3 [2022-11-19 07:28:37,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:37,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:28:37,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:28:37,578 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:28:37,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:28:37,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,588 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 57 treesize of output 116 [2022-11-19 07:28:37,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,635 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:37,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:28:37,706 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:28:37,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 135 [2022-11-19 07:28:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-19 07:28:37,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:37,849 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:37,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-19 07:28:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:38,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:41,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912345572] [2022-11-19 07:28:41,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776081555] [2022-11-19 07:28:41,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776081555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489467499] [2022-11-19 07:28:41,459 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:28:41,459 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:41,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:41,460 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:41,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:41,602 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:41,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:41,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:28:41,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:28:41,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:28:41,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:41,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:41,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,068 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 07:28:42,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 527 [2022-11-19 07:28:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,291 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 63 treesize of output 63 [2022-11-19 07:28:42,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:42,317 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:42,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:42,402 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:28:42,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:28:42,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:42,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:42,456 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:42,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:42,545 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:43,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1567#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:43,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:43,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:43,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-11-19 07:28:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677645677] [2022-11-19 07:28:43,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 07:28:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 07:28:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:28:43,259 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2022-11-19 07:28:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:43,818 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-11-19 07:28:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:28:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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 [2022-11-19 07:28:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:43,821 INFO L225 Difference]: With dead ends: 37 [2022-11-19 07:28:43,821 INFO L226 Difference]: Without dead ends: 35 [2022-11-19 07:28:43,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-11-19 07:28:43,823 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:43,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-19 07:28:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-19 07:28:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-19 07:28:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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) [2022-11-19 07:28:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-19 07:28:43,841 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2022-11-19 07:28:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:43,841 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-19 07:28:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2022-11-19 07:28:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-11-19 07:28:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:28:43,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:43,843 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:43,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 07:28:44,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash -353052299, now seen corresponding path program 5 times [2022-11-19 07:28:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:44,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765165300] [2022-11-19 07:28:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:44,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:44,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985789114] [2022-11-19 07:28:44,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:28:44,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:44,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:44,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:28:44,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:28:44,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:28:44,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:28:44,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:44,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:44,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765165300] [2022-11-19 07:28:44,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985789114] [2022-11-19 07:28:44,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985789114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:44,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1167938529] [2022-11-19 07:28:44,499 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:44,500 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:44,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:44,500 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:44,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:44,672 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-19 07:28:44,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-19 07:28:44,769 INFO L321 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-19 07:28:44,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-19 07:28:44,941 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:44,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:44,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:44,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:44,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:28:45,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:45,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:45,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,307 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:28:45,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-19 07:28:45,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,451 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 63 treesize of output 63 [2022-11-19 07:28:45,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:45,480 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:45,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:45,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:45,568 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:28:45,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:28:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:45,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:45,630 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:45,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:45,648 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:46,072 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1779#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:46,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:46,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:46,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-19 07:28:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125881993] [2022-11-19 07:28:46,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:28:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:28:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:28:46,075 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:46,489 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2022-11-19 07:28:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 07:28:46,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:28:46,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:46,490 INFO L225 Difference]: With dead ends: 71 [2022-11-19 07:28:46,490 INFO L226 Difference]: Without dead ends: 63 [2022-11-19 07:28:46,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:28:46,492 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:46,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 58 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:28:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-19 07:28:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 39. [2022-11-19 07:28:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-19 07:28:46,507 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2022-11-19 07:28:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:46,508 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-19 07:28:46,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-19 07:28:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:28:46,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:46,509 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:46,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:46,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:46,717 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:46,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1968965520, now seen corresponding path program 6 times [2022-11-19 07:28:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:46,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321120147] [2022-11-19 07:28:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:46,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:46,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310388427] [2022-11-19 07:28:46,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:28:46,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:46,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:46,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:28:47,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:28:47,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:28:47,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-19 07:28:47,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:47,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:28:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:47,777 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 14 treesize of output 14 [2022-11-19 07:28:47,780 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 8 treesize of output 7 [2022-11-19 07:28:47,798 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 14 treesize of output 16 [2022-11-19 07:28:47,834 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 14 treesize of output 16 [2022-11-19 07:28:47,869 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 14 treesize of output 16 [2022-11-19 07:28:47,892 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 14 treesize of output 16 [2022-11-19 07:28:47,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:47,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:28:47,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:47,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:28:48,036 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 [2022-11-19 07:28:48,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:48,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:48,043 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 57 treesize of output 116 [2022-11-19 07:28:48,054 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:28:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:48,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:28:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:48,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:28:49,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321120147] [2022-11-19 07:28:49,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:28:49,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310388427] [2022-11-19 07:28:49,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310388427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:49,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67511858] [2022-11-19 07:28:49,043 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:28:49,044 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:49,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:49,044 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:49,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:49,170 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:28:49,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:28:49,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:28:49,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:28:49,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:28:49,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,467 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:28:49,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-19 07:28:49,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,586 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 63 treesize of output 63 [2022-11-19 07:28:49,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,609 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:49,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:49,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,683 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:28:49,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:28:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:49,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:49,727 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:49,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:28:49,746 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:28:50,101 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2076#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:28:50,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:28:50,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:28:50,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2022-11-19 07:28:50,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211376068] [2022-11-19 07:28:50,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:28:50,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:28:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:28:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=526, Unknown=2, NotChecked=0, Total=650 [2022-11-19 07:28:50,103 INFO L87 Difference]: Start difference. First operand 39 states and 47 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) [2022-11-19 07:28:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:50,878 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2022-11-19 07:28:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 07:28:50,879 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 15 [2022-11-19 07:28:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:50,879 INFO L225 Difference]: With dead ends: 70 [2022-11-19 07:28:50,879 INFO L226 Difference]: Without dead ends: 68 [2022-11-19 07:28:50,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=260, Invalid=1297, Unknown=3, NotChecked=0, Total=1560 [2022-11-19 07:28:50,881 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 61 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:50,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 36 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 88 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-19 07:28:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-19 07:28:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 43. [2022-11-19 07:28:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 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) [2022-11-19 07:28:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-11-19 07:28:50,895 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2022-11-19 07:28:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:50,896 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-11-19 07:28:50,896 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) [2022-11-19 07:28:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-11-19 07:28:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:28:50,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:50,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:50,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:28:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:28:51,104 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 226857964, now seen corresponding path program 4 times [2022-11-19 07:28:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:51,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629330664] [2022-11-19 07:28:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:51,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:28:51,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504296280] [2022-11-19 07:28:51,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:28:51,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:51,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:51,149 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:51,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:28:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:51,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-19 07:28:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:51,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:28:51,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-19 07:28:51,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-19 07:28:51,721 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 8 treesize of output 7 [2022-11-19 07:28:51,728 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 8 treesize of output 7 [2022-11-19 07:28:51,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,768 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:51,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:28:51,821 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:28:51,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:28:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,828 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 57 treesize of output 116 [2022-11-19 07:28:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,843 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 77 treesize of output 22 [2022-11-19 07:28:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,881 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:51,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:28:51,963 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:28:51,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 135 [2022-11-19 07:28:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:28:51,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:51,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-19 07:28:52,029 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:28:52,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:52,094 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:52,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-19 07:28:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:52,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:28:52,148 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:28:52,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-19 07:28:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:52,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:29:01,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629330664] [2022-11-19 07:29:01,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:29:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504296280] [2022-11-19 07:29:01,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504296280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:01,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [51931925] [2022-11-19 07:29:01,518 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:29:01,519 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:29:01,519 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:29:01,519 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:29:01,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:29:01,672 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:29:01,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:29:01,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:29:01,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:29:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:29:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:01,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:01,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:01,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,009 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 07:29:02,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 529 [2022-11-19 07:29:02,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,179 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 63 treesize of output 63 [2022-11-19 07:29:02,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:02,203 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:02,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:29:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:02,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:02,274 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:29:02,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:29:02,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:02,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:02,317 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:02,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:29:02,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:29:03,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2405#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:29:03,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:29:03,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:29:03,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-19 07:29:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718214270] [2022-11-19 07:29:03,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:29:03,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:29:03,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:03,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:29:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2022-11-19 07:29:03,080 INFO L87 Difference]: Start difference. First operand 43 states and 55 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) [2022-11-19 07:29:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:03,920 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-11-19 07:29:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 07:29:03,920 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 16 [2022-11-19 07:29:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:03,921 INFO L225 Difference]: With dead ends: 66 [2022-11-19 07:29:03,921 INFO L226 Difference]: Without dead ends: 64 [2022-11-19 07:29:03,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:29:03,923 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:03,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-19 07:29:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-19 07:29:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2022-11-19 07:29:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 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) [2022-11-19 07:29:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2022-11-19 07:29:03,944 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 16 [2022-11-19 07:29:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:03,944 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2022-11-19 07:29:03,944 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) [2022-11-19 07:29:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2022-11-19 07:29:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:29:03,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:03,945 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:03,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:29:04,146 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:04,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1399993040, now seen corresponding path program 5 times [2022-11-19 07:29:04,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:04,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598860721] [2022-11-19 07:29:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:04,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:29:04,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468932587] [2022-11-19 07:29:04,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:29:04,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:04,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:04,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:04,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:29:04,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:29:04,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:29:04,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-19 07:29:04,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:04,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:29:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-19 07:29:04,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-19 07:29:04,559 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 8 treesize of output 7 [2022-11-19 07:29:04,567 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 8 treesize of output 7 [2022-11-19 07:29:04,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,611 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:04,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-19 07:29:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,663 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:04,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 49 [2022-11-19 07:29:04,774 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:29:04,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 184 treesize of output 164 [2022-11-19 07:29:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:04,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 213 [2022-11-19 07:29:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:04,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:04,926 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-19 07:29:04,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 81 treesize of output 70 [2022-11-19 07:29:05,389 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-19 07:29:05,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 41 [2022-11-19 07:29:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:29:05,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:09,188 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse33 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse31 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse32 (* .cse33 8)) (.cse0 (<= .cse33 2147483647))) (let ((.cse11 (not .cse0)) (.cse17 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse18 (* 8 .cse31)) (.cse19 (<= .cse31 2147483647))) (and (or (let ((.cse1 (+ 2 (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse18))))) (and (or .cse0 (forall ((v_ArrVal_630 Int)) (or (not (<= .cse1 v_ArrVal_630)) (= 7 (let ((.cse8 (store .cse9 .cse10 v_ArrVal_630))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse2 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (select .cse5 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse5 .cse6 (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))))))) (or .cse11 (forall ((v_ArrVal_630 Int)) (or (not (<= .cse1 v_ArrVal_630)) (= 7 (let ((.cse16 (store .cse9 .cse17 v_ArrVal_630))) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse12 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (select .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse12 (select (select (store .cse13 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse14 .cse6 (+ .cse12 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse15))))))))))) (not .cse19)) (or (let ((.cse25 (+ (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse18)) 2))) (and (or .cse11 (forall ((v_ArrVal_630 Int)) (or (= 7 (let ((.cse24 (store .cse9 .cse17 v_ArrVal_630))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse22 (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse20 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (select .cse22 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse20 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse22 .cse6 (+ .cse20 .cse23))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse23)))))) (not (<= .cse25 v_ArrVal_630))))) (or (forall ((v_ArrVal_630 Int)) (or (not (<= .cse25 v_ArrVal_630)) (= 7 (let ((.cse30 (store .cse9 .cse10 v_ArrVal_630))) (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30))) (let ((.cse29 (select .cse28 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse26 (select .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (select .cse29 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse26 .cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse29 .cse6 (+ .cse26 .cse27))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))))))))) .cse0))) .cse19))))) is different from false [2022-11-19 07:29:57,394 WARN L233 SmtUtils]: Spent 33.82s on a formula simplification. DAG size of input: 152 DAG size of output: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 07:29:57,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598860721] [2022-11-19 07:29:57,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:29:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468932587] [2022-11-19 07:29:57,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468932587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554161613] [2022-11-19 07:29:57,414 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:29:57,414 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:29:57,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:29:57,415 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:29:57,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:29:57,601 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:29:57,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:29:57,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:29:57,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:29:57,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:57,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:29:57,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:57,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:57,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:57,958 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:29:57,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 560 treesize of output 528 [2022-11-19 07:29:58,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:58,079 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 63 treesize of output 63 [2022-11-19 07:29:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:58,120 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:58,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-19 07:29:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:58,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:58,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:58,171 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:58,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:29:58,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:58,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:29:58,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:29:58,215 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:29:58,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:29:58,276 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:30:00,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2732#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:30:00,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:30:00,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:30:00,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-19 07:30:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305518936] [2022-11-19 07:30:00,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:30:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:30:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:30:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=700, Unknown=7, NotChecked=54, Total=870 [2022-11-19 07:30:00,187 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:30:06,236 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 97 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:15,775 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2022-11-19 07:30:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:30:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 07:30:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:15,777 INFO L225 Difference]: With dead ends: 72 [2022-11-19 07:30:15,777 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 07:30:15,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=245, Invalid=1392, Unknown=7, NotChecked=78, Total=1722 [2022-11-19 07:30:15,778 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 61 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:15,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 43 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 154 Invalid, 0 Unknown, 88 Unchecked, 1.4s Time] [2022-11-19 07:30:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 07:30:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-11-19 07:30:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 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) [2022-11-19 07:30:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-19 07:30:15,800 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-19 07:30:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:15,801 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-19 07:30:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:30:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-19 07:30:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:30:15,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:15,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:15,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:30:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:16,010 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1078330630, now seen corresponding path program 6 times [2022-11-19 07:30:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:16,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164383732] [2022-11-19 07:30:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:16,031 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:30:16,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119985927] [2022-11-19 07:30:16,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:30:16,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:30:16,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:30:16,033 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:30:16,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 07:30:16,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:30:16,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:30:16,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-19 07:30:16,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:17,029 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 07:30:17,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 07:30:17,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 07:30:17,073 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-19 07:30:17,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 43 treesize of output 68 [2022-11-19 07:30:17,096 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 8 treesize of output 7 [2022-11-19 07:30:17,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:30:17,135 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 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-19 07:30:17,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:30:17,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:30:17,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-19 07:30:17,243 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 64 [2022-11-19 07:30:17,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:30:17,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:30:17,383 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:30:17,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:30:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,396 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 57 treesize of output 116 [2022-11-19 07:30:17,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,436 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 85 treesize of output 26 [2022-11-19 07:30:17,509 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:30:17,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:30:17,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,522 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 57 treesize of output 116 [2022-11-19 07:30:17,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,562 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 85 treesize of output 26 [2022-11-19 07:30:17,626 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:30:17,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:30:17,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,634 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 57 treesize of output 116 [2022-11-19 07:30:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,704 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:30:17,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:30:17,776 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:30:17,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 135 [2022-11-19 07:30:17,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:30:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-19 07:30:17,928 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:30:17,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 99 [2022-11-19 07:30:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 173 [2022-11-19 07:30:17,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:17,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 64 [2022-11-19 07:30:18,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:18,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:18,054 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:30:18,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-19 07:30:18,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:18,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:30:18,114 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:30:18,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 07:30:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:18,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:01,379 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 120 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:01,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:01,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164383732] [2022-11-19 07:31:01,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:31:01,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119985927] [2022-11-19 07:31:01,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119985927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:31:01,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1779791248] [2022-11-19 07:31:01,397 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:31:01,397 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:31:01,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:31:01,397 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:31:01,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:31:01,478 INFO L321 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-19 07:31:01,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-19 07:31:01,606 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:31:01,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:31:01,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:31:01,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:31:01,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:01,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:01,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:01,897 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 07:31:01,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 524 treesize of output 529 [2022-11-19 07:31:02,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,010 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 63 treesize of output 63 [2022-11-19 07:31:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:02,036 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:31:02,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:31:02,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:02,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:02,123 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:31:02,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:31:02,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:02,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:02,172 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:31:02,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:31:02,244 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:31:04,180 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3089#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:31:04,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:31:04,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:31:04,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2022-11-19 07:31:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423914531] [2022-11-19 07:31:04,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:31:04,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-19 07:31:04,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-19 07:31:04,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=911, Unknown=8, NotChecked=0, Total=1056 [2022-11-19 07:31:04,182 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2022-11-19 07:31:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:08,505 INFO L93 Difference]: Finished difference Result 98 states and 125 transitions. [2022-11-19 07:31:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-19 07:31:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) Word has length 18 [2022-11-19 07:31:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:08,506 INFO L225 Difference]: With dead ends: 98 [2022-11-19 07:31:08,507 INFO L226 Difference]: Without dead ends: 96 [2022-11-19 07:31:08,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 48.4s TimeCoverageRelationStatistics Valid=167, Invalid=1084, Unknown=9, NotChecked=0, Total=1260 [2022-11-19 07:31:08,508 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:08,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-19 07:31:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-19 07:31:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2022-11-19 07:31:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 59 states have internal predecessors, (83), 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) [2022-11-19 07:31:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-11-19 07:31:08,567 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 18 [2022-11-19 07:31:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:08,568 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-11-19 07:31:08,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2022-11-19 07:31:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-11-19 07:31:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:31:08,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:08,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:08,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:31:08,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 07:31:08,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1947804162, now seen corresponding path program 7 times [2022-11-19 07:31:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:08,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337672760] [2022-11-19 07:31:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:08,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:31:08,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200620703] [2022-11-19 07:31:08,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:31:08,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:31:08,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:31:08,812 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:31:08,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 07:31:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-19 07:31:09,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:09,548 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-19 07:31:09,549 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 07:31:09,594 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-19 07:31:09,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 46 treesize of output 71 [2022-11-19 07:31:09,606 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 8 treesize of output 7 [2022-11-19 07:31:09,678 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 8 treesize of output 7 [2022-11-19 07:31:09,688 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 0 case distinctions, treesize of input 62 treesize of output 79 [2022-11-19 07:31:09,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:09,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:09,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 78 [2022-11-19 07:31:09,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-19 07:31:09,895 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-19 07:31:09,895 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 87 [2022-11-19 07:31:09,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:31:09,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:31:10,096 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:31:10,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 117 [2022-11-19 07:31:10,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:10,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 188 [2022-11-19 07:31:10,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 78 [2022-11-19 07:31:10,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,237 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:31:10,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 07:31:10,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,292 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:31:10,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2022-11-19 07:31:10,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:10,406 INFO L321 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-11-19 07:31:10,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 44 [2022-11-19 07:31:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:10,483 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:31:10,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 60 [2022-11-19 07:31:10,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:10,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:31:10,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:10,569 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:31:10,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 80 [2022-11-19 07:31:11,146 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-19 07:31:11,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 47 [2022-11-19 07:31:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:11,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:18,273 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse35 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse33 (* .cse35 8))) (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse12 (+ .cse33 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse34 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) (.cse14 (<= .cse35 2147483647)) (.cse32 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse22 (<= .cse32 2147483647)) (.cse0 (not .cse14)) (.cse5 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (select .cse11 .cse12)) (.cse10 (+ .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ .cse33 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse20 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (* 8 .cse32))) (and (or (let ((.cse2 (select .cse11 (+ .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse3 (select .cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse21)))) (let ((.cse13 (+ .cse2 .cse3))) (and (or .cse0 (forall ((v_ArrVal_776 Int)) (let ((.cse8 (store .cse11 .cse12 .cse13))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 .cse2 .cse3)))) (or (not (<= (+ .cse1 .cse2 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)) v_ArrVal_776)) (= (select (store .cse4 .cse6 v_ArrVal_776) .cse7) 7))))))) (or .cse14 (forall ((v_ArrVal_776 Int)) (let ((.cse18 (store .cse11 .cse19 .cse13))) (let ((.cse17 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse15 (store .cse18 .cse9 (+ .cse16 .cse17)))) (or (= 7 (select (store .cse15 .cse6 v_ArrVal_776) .cse7)) (not (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse16 .cse17) v_ArrVal_776))))))))))) (not .cse22)) (or .cse22 (let ((.cse25 (select .cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse21))) (.cse26 (select .cse11 (+ (- 34359738368) .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse28 (+ .cse25 .cse26))) (and (or (forall ((v_ArrVal_776 Int)) (let ((.cse27 (store .cse11 .cse12 .cse28))) (let ((.cse24 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse27) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse23 (store .cse27 .cse9 (+ .cse24 .cse25 .cse26)))) (or (= 7 (select (store .cse23 .cse6 v_ArrVal_776) .cse7)) (not (<= (+ .cse24 .cse25 .cse26 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)) v_ArrVal_776))))))) .cse0) (or (forall ((v_ArrVal_776 Int)) (let ((.cse31 (store .cse11 .cse19 .cse28))) (let ((.cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse31) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse30 (store .cse31 .cse9 (+ .cse29 .cse16)))) (or (not (<= (+ .cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse30) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse16) v_ArrVal_776)) (= 7 (select (store .cse30 .cse6 v_ArrVal_776) .cse7))))))) .cse14)))))))))) is different from false [2022-11-19 07:32:07,169 WARN L233 SmtUtils]: Spent 19.60s on a formula simplification. DAG size of input: 169 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-19 07:32:07,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:07,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337672760] [2022-11-19 07:32:07,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:32:07,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200620703] [2022-11-19 07:32:07,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200620703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:32:07,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319233595] [2022-11-19 07:32:07,186 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:32:07,187 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:32:07,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:32:07,187 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:32:07,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:32:07,320 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:32:07,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:32:07,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:32:07,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:32:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:32:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:07,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:07,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,660 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 07:32:07,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 532 [2022-11-19 07:32:07,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,816 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 63 treesize of output 63 [2022-11-19 07:32:07,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:07,838 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:07,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:32:07,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:07,905 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:32:07,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:32:07,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:07,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:07,948 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:07,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:32:08,018 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:32:12,195 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3499#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:32:12,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:32:12,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:32:12,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-19 07:32:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100080865] [2022-11-19 07:32:12,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:32:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 07:32:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 07:32:12,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=915, Unknown=8, NotChecked=62, Total=1122 [2022-11-19 07:32:12,197 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:14,944 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2022-11-19 07:32:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-19 07:32:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 07:32:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:14,945 INFO L225 Difference]: With dead ends: 90 [2022-11-19 07:32:14,945 INFO L226 Difference]: Without dead ends: 80 [2022-11-19 07:32:14,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 60.4s TimeCoverageRelationStatistics Valid=177, Invalid=1151, Unknown=8, NotChecked=70, Total=1406 [2022-11-19 07:32:14,946 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:14,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 59 Unchecked, 0.3s Time] [2022-11-19 07:32:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-19 07:32:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2022-11-19 07:32:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 66 states have internal predecessors, (90), 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) [2022-11-19 07:32:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 90 transitions. [2022-11-19 07:32:14,969 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 90 transitions. Word has length 19 [2022-11-19 07:32:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:14,969 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 90 transitions. [2022-11-19 07:32:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 90 transitions. [2022-11-19 07:32:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:32:14,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:14,970 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:14,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:15,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 07:32:15,174 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1564621520, now seen corresponding path program 7 times [2022-11-19 07:32:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:15,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703186113] [2022-11-19 07:32:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:15,198 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:32:15,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581721545] [2022-11-19 07:32:15,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:32:15,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:15,200 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:32:15,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 07:32:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:15,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:32:15,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:32:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:32:15,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:32:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:32:15,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:15,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703186113] [2022-11-19 07:32:15,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:32:15,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581721545] [2022-11-19 07:32:15,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581721545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:32:15,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [463504858] [2022-11-19 07:32:15,532 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:32:15,533 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:32:15,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:32:15,533 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:32:15,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:32:15,693 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:32:15,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:32:15,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:32:15,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:32:15,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:32:15,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:15,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,046 INFO L321 Elim1Store]: treesize reduction 246, result has 10.5 percent of original size [2022-11-19 07:32:16,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 516 treesize of output 527 [2022-11-19 07:32:16,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,206 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 63 treesize of output 63 [2022-11-19 07:32:16,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:16,226 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:16,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:32:16,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:16,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:16,300 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:32:16,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:32:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:16,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:16,343 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:16,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:32:16,363 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:32:16,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3900#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:32:16,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:32:16,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:32:16,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-19 07:32:16,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962403802] [2022-11-19 07:32:16,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:32:16,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:32:16,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:32:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:32:16,767 INFO L87 Difference]: Start difference. First operand 67 states and 90 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) [2022-11-19 07:32:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:17,373 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2022-11-19 07:32:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:32:17,374 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 19 [2022-11-19 07:32:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:17,375 INFO L225 Difference]: With dead ends: 138 [2022-11-19 07:32:17,375 INFO L226 Difference]: Without dead ends: 122 [2022-11-19 07:32:17,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 07:32:17,377 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:17,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 70 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:32:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-19 07:32:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 72. [2022-11-19 07:32:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.295774647887324) internal successors, (92), 71 states have internal predecessors, (92), 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) [2022-11-19 07:32:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-11-19 07:32:17,425 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 19 [2022-11-19 07:32:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:17,426 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-11-19 07:32:17,426 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) [2022-11-19 07:32:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-11-19 07:32:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:32:17,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:17,427 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:17,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:17,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 07:32:17,635 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:17,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1445055253, now seen corresponding path program 8 times [2022-11-19 07:32:17,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:17,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323389516] [2022-11-19 07:32:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:17,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:17,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:32:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559829130] [2022-11-19 07:32:17,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:32:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:17,671 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:32:17,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 07:32:21,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:32:21,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:32:21,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 07:32:21,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:32:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:21,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:32:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:21,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:21,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323389516] [2022-11-19 07:32:21,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:32:21,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559829130] [2022-11-19 07:32:21,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559829130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:32:21,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1846484391] [2022-11-19 07:32:21,445 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:32:21,445 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:32:21,446 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:32:21,446 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:32:21,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:32:21,600 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:32:21,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:32:21,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:32:21,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2022-11-19 07:32:21,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:21,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 166 [2022-11-19 07:32:21,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:21,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:21,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,894 INFO L321 Elim1Store]: treesize reduction 308, result has 0.3 percent of original size [2022-11-19 07:32:21,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 589 treesize of output 530 [2022-11-19 07:32:21,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:21,999 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 63 treesize of output 63 [2022-11-19 07:32:22,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:22,024 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:22,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:32:22,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:22,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:22,112 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:32:22,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:32:22,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:22,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:22,154 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:22,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:32:22,171 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:32:22,647 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4404#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:32:22,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:32:22,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:32:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2022-11-19 07:32:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027356376] [2022-11-19 07:32:22,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:32:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-19 07:32:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-19 07:32:22,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2022-11-19 07:32:22,650 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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) [2022-11-19 07:32:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:24,216 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2022-11-19 07:32:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-19 07:32:24,217 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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 20 [2022-11-19 07:32:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:24,218 INFO L225 Difference]: With dead ends: 246 [2022-11-19 07:32:24,218 INFO L226 Difference]: Without dead ends: 230 [2022-11-19 07:32:24,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1102, Invalid=4300, Unknown=0, NotChecked=0, Total=5402 [2022-11-19 07:32:24,221 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 403 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:24,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 98 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:32:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-19 07:32:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 99. [2022-11-19 07:32:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.316326530612245) internal successors, (129), 98 states have internal predecessors, (129), 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) [2022-11-19 07:32:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2022-11-19 07:32:24,263 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 20 [2022-11-19 07:32:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:24,263 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2022-11-19 07:32:24,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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) [2022-11-19 07:32:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2022-11-19 07:32:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:32:24,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:24,265 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:24,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:32:24,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:24,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1802518636, now seen corresponding path program 8 times [2022-11-19 07:32:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067804330] [2022-11-19 07:32:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:24,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:24,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:32:24,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192649080] [2022-11-19 07:32:24,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:32:24,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:32:24,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:24,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:32:24,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_873f96a2-bfe2-4d42-9fb4-5fc410ff46d7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 07:32:26,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:32:26,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:32:26,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-19 07:32:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:32:26,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 07:32:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:26,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-19 07:32:26,960 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 8 treesize of output 7 [2022-11-19 07:32:26,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:32:27,042 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:32:27,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:32:27,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,053 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 57 treesize of output 116 [2022-11-19 07:32:27,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,154 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:27,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:32:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,208 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:27,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:32:27,282 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:32:27,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-19 07:32:27,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,290 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 57 treesize of output 116 [2022-11-19 07:32:27,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,307 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 79 treesize of output 19 [2022-11-19 07:32:27,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,392 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:27,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:32:27,528 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:32:27,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 135 [2022-11-19 07:32:27,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:32:27,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-19 07:32:27,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,692 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:27,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-19 07:32:27,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,763 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:32:27,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 44 [2022-11-19 07:32:27,880 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:32:27,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 85 [2022-11-19 07:32:27,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:27,896 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-19 07:32:27,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 130 [2022-11-19 07:32:27,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 72 treesize of output 14 [2022-11-19 07:32:28,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 180 [2022-11-19 07:32:28,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:28,237 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-19 07:32:28,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 211 [2022-11-19 07:32:28,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:32:28,464 INFO L321 Elim1Store]: treesize reduction 62, result has 37.4 percent of original size [2022-11-19 07:32:28,466 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 2 case distinctions, treesize of input 149 treesize of output 109 [2022-11-19 07:32:29,438 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:32:29,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 32 [2022-11-19 07:32:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:29,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:33:01,924 WARN L233 SmtUtils]: Spent 17.13s on a formula simplification. DAG size of input: 77 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:44,164 WARN L233 SmtUtils]: Spent 32.87s on a formula simplification. DAG size of input: 84 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:02,169 WARN L233 SmtUtils]: Spent 2.02m on a formula simplification. DAG size of input: 147 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:10,859 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:33,931 WARN L233 SmtUtils]: Spent 18.57s on a formula simplification. DAG size of input: 105 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:49,903 WARN L233 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 177 DAG size of output: 143 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:16,764 WARN L233 SmtUtils]: Spent 21.55s on a formula simplification. DAG size of input: 192 DAG size of output: 172 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:33,356 WARN L233 SmtUtils]: Spent 1.96m on a formula simplification. DAG size of input: 225 DAG size of output: 204 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:33,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:33,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:33,409 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-19 07:39:33,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 373 treesize of output 1 [2022-11-19 07:39:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:39:33,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:33,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067804330] [2022-11-19 07:39:33,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:39:33,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192649080] [2022-11-19 07:39:33,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192649080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:39:33,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1414969040] [2022-11-19 07:39:33,414 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 07:39:33,414 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:39:33,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:39:33,415 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:39:33,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:39:33,507 INFO L321 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2022-11-19 07:39:33,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2022-11-19 07:39:33,655 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-19 07:39:33,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-19 07:39:33,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:39:33,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 31 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 122 [2022-11-19 07:39:33,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:33,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:33,982 INFO L321 Elim1Store]: treesize reduction 241, result has 12.4 percent of original size [2022-11-19 07:39:33,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 43 case distinctions, treesize of input 522 treesize of output 534 [2022-11-19 07:39:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,090 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 63 treesize of output 63 [2022-11-19 07:39:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:34,112 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:39:34,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:39:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:34,186 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-19 07:39:34,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 191 [2022-11-19 07:39:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:39:34,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:39:34,239 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:39:34,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-19 07:39:34,300 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:39:40,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5155#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ |ULTIMATE.start_main_~b~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_#t~mem13#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (ite (= (+ |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) 1) |ULTIMATE.start_main_#t~mem13#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-19 07:39:40,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:39:40,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:39:40,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2022-11-19 07:39:40,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469649239] [2022-11-19 07:39:40,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:39:40,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 07:39:40,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 07:39:40,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1377, Unknown=21, NotChecked=0, Total=1640 [2022-11-19 07:39:40,872 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:39:50,584 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (not (< 1 c_~N~0))) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse2 (+ (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (and (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1006 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse0 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse0 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (store .cse1 .cse2 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3)))) (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1006 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse4 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse4 1)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (= (select (store (store (store .cse1 .cse2 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3))))) .cse5) (or (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0) .cse5 (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (forall ((v_ArrVal_1009 Int)) (= 3 (select (store .cse1 .cse2 v_ArrVal_1009) .cse3)))))) is different from false [2022-11-19 07:39:52,682 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse85 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse84 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse86 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse87 (mod .cse84 4294967296)) (.cse45 (mod .cse85 4294967296))) (let ((.cse81 (* 8 .cse45)) (.cse82 (* .cse87 8)) (.cse83 (* .cse86 8)) (.cse47 (<= .cse87 2147483647)) (.cse12 (<= .cse86 2147483647))) (let ((.cse22 (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (.cse27 (< .cse85 c_~N~0)) (.cse21 (not (< 1 c_~N~0))) (.cse0 (< .cse84 c_~N~0)) (.cse17 (not .cse12)) (.cse51 (not .cse47)) (.cse16 (+ .cse83 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (+ .cse82 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse33 (+ .cse81 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (+ .cse83 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse41 (+ .cse82 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse37 (+ .cse81 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 24 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse46 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (and (or .cse0 (and (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse1 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse1 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= 3 (select (store (store (store (store (let ((.cse4 (store .cse5 .cse6 v_ArrVal_999))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse2 .cse3 (+ (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3))))) (or (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse11 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (store (store (let ((.cse10 (store .cse5 .cse6 v_ArrVal_999))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse9 .cse3 (+ (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse11) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse11 1)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse12) (or (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse13 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse13 1)) (= 3 (select (store (store (store (store (let ((.cse15 (store .cse5 .cse16 v_ArrVal_999))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse14 .cse3 (+ (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse17) (or .cse17 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse18 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18) c_~N~0) (= (select (store (store (store (store (let ((.cse20 (store .cse5 .cse16 v_ArrVal_999))) (let ((.cse19 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse19 .cse3 (+ (select .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse19 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))))) .cse21 (not .cse22)) (or (let ((.cse24 (let ((.cse26 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse26 .cse3 (+ (select .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (and (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse23 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23) c_~N~0) (= (select (store (store (store (store .cse24 .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse23 1)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse25 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25 1)) (= (select (store (store (store (store .cse24 .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))))) .cse22 .cse21) (<= c_~N~0 2147483647) (or .cse21 (not .cse27) (let ((.cse28 (<= .cse45 2147483647))) (and (or (not .cse28) (and .cse12 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse29 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse29) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse29 1)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (= (select (store (store (store (store (let ((.cse31 (store (store (store .cse5 .cse16 v_ArrVal_996) .cse32 v_ArrVal_997) .cse33 v_ArrVal_999))) (let ((.cse30 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse30 .cse3 (+ (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse30 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3)))))) (or (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse34 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse34 1)) (= 3 (select (store (store (store (store (let ((.cse36 (store (store (store .cse5 .cse16 v_ArrVal_996) .cse32 v_ArrVal_997) .cse37 v_ArrVal_999))) (let ((.cse35 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse36) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse35 .cse3 (+ (select .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse35 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse28) (or (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse38 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38) c_~N~0) (= (select (store (store (store (store (let ((.cse40 (store (store (store .cse5 .cse6 v_ArrVal_996) .cse41 v_ArrVal_997) .cse37 v_ArrVal_999))) (let ((.cse39 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse39 .cse3 (+ (select .cse39 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse38 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) .cse12) (or .cse17 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse42 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse42) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse42 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (store (store (let ((.cse44 (store (store (store .cse5 .cse16 v_ArrVal_996) .cse41 v_ArrVal_997) .cse37 v_ArrVal_999))) (let ((.cse43 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse44) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse43 .cse3 (+ (select .cse43 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3))))))) (< .cse46 c_~N~0)) (or .cse27 .cse21 (and (or .cse47 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse48 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse48) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse48 1)) (= 3 (select (store (store (store (store (let ((.cse50 (store (store .cse5 .cse16 v_ArrVal_997) .cse41 v_ArrVal_999))) (let ((.cse49 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse50) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse49 .cse3 (+ (select .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or .cse51 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse54 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (store (store (let ((.cse53 (store (store .cse5 .cse6 v_ArrVal_997) .cse32 v_ArrVal_999))) (let ((.cse52 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse52 .cse3 (+ (select .cse53 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse52 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse54) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse54 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647))))) (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse55 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse55) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse55 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (store (store (let ((.cse57 (store (store .cse5 .cse6 v_ArrVal_997) .cse41 v_ArrVal_999))) (let ((.cse56 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse57) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse56 .cse3 (+ (select .cse57 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse56 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3)))) (or .cse51 (forall ((|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1009 Int)) (let ((.cse58 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse58) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse58 1)) (= 3 (select (store (store (store (store (let ((.cse60 (store (store .cse5 .cse16 v_ArrVal_997) .cse32 v_ArrVal_999))) (let ((.cse59 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse59 .cse3 (+ (select .cse60 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))))) (not .cse0)) (or (<= c_~N~0 .cse46) (let ((.cse80 (mod .cse46 4294967296))) (let ((.cse65 (<= .cse80 2147483647)) (.cse75 (* .cse80 8))) (let ((.cse64 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse75)) (.cse76 (not .cse65))) (and (or .cse17 (and (or (forall ((v_ArrVal_994 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse61 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse61) c_~N~0) (= (select (store (store (store (store (let ((.cse63 (store (store (store (store .cse5 .cse16 v_ArrVal_994) .cse41 v_ArrVal_996) .cse37 v_ArrVal_997) .cse64 v_ArrVal_999))) (let ((.cse62 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse63) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse62 .cse3 (+ (select .cse62 |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse63 |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse61 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) .cse47) (or .cse65 (forall ((v_ArrVal_994 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse66 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse66) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse66 1)) (= 3 (select (store (store (store (store (let ((.cse68 (store (store (store (store .cse5 .cse16 v_ArrVal_994) .cse32 v_ArrVal_996) .cse33 v_ArrVal_997) .cse64 v_ArrVal_999))) (let ((.cse67 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse67 .cse3 (+ (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse67 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0))))) (or (forall ((v_ArrVal_994 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse71 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (store (store (let ((.cse70 (store (store (store (store .cse5 .cse16 v_ArrVal_994) .cse32 v_ArrVal_996) .cse37 v_ArrVal_997) .cse64 v_ArrVal_999))) (let ((.cse69 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse70) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse69 .cse3 (+ (select .cse70 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse69 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3) 3) (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse71) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse71 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) .cse51) (or (forall ((v_ArrVal_994 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (v_ArrVal_997 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse72 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse72) c_~N~0) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse72 1)) (= 3 (select (store (store (store (store (let ((.cse74 (store (store (store (store .cse5 .cse16 v_ArrVal_994) .cse32 v_ArrVal_996) .cse33 v_ArrVal_997) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse75) v_ArrVal_999))) (let ((.cse73 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse74) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse73 .cse3 (+ (select .cse74 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0)))) .cse76))) (or (and (forall ((v_ArrVal_994 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1004 Int) (v_ArrVal_1006 Int) (v_ArrVal_999 Int) (v_ArrVal_1007 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_997 Int) (v_ArrVal_996 Int) (v_ArrVal_1009 Int)) (let ((.cse79 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= 3 (select (store (store (store (store (let ((.cse78 (store (store (store (store .cse5 .cse6 v_ArrVal_994) .cse41 v_ArrVal_996) .cse37 v_ArrVal_997) .cse64 v_ArrVal_999))) (let ((.cse77 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse78) |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse77 .cse3 (+ (select .cse78 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse77 |c_ULTIMATE.start_main_~b~0#1.offset|))))) .cse7 v_ArrVal_1004) .cse8 v_ArrVal_1006) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1007) (+ (* (mod (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1009) .cse3)) (< (+ 2 |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse79) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse79 1)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647)))) .cse76) .cse12))))) (<= c_~N~0 1) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) c_~N~0))))))) is different from true [2022-11-19 07:40:34,285 WARN L233 SmtUtils]: Spent 28.00s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:03,998 WARN L233 SmtUtils]: Spent 22.74s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:35,341 WARN L233 SmtUtils]: Spent 24.69s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:11,808 WARN L233 SmtUtils]: Spent 25.49s on a formula simplification. DAG size of input: 108 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:37,051 WARN L233 SmtUtils]: Spent 16.94s on a formula simplification that was a NOOP. DAG size: 126 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:12,643 WARN L233 SmtUtils]: Spent 28.87s on a formula simplification. DAG size of input: 113 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)