./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifncomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifncomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 6359f1f4cb6aed42e13f4959731bd90b4ed828bda061bd22e3b91472b1893854 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:41,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:41,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:04:41,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:41,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:41,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:41,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:41,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:41,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:41,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:41,690 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:41,691 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:41,691 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:41,693 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:04:41,694 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:41,694 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:41,695 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:04:41,695 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:04:41,696 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:41,697 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:04:41,697 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:04:41,698 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:04:41,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:41,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:41,700 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:04:41,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:41,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:04:41,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:41,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:41,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:41,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:41,704 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:04:41,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:41,705 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:41,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:41,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:41,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:41,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:41,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:41,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:41,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:04:41,707 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:04:41,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:04:41,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:41,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:04:41,709 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:41,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:41,709 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6359f1f4cb6aed42e13f4959731bd90b4ed828bda061bd22e3b91472b1893854 [2023-11-25 00:04:42,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:42,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:42,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:42,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:42,050 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:42,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/array-fpi/ifncomp.c [2023-11-25 00:04:45,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:45,440 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:45,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/sv-benchmarks/c/array-fpi/ifncomp.c [2023-11-25 00:04:45,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/data/c2e7d3afb/399f903638214674a77816085e9a2b36/FLAG6ae670c11 [2023-11-25 00:04:45,475 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/data/c2e7d3afb/399f903638214674a77816085e9a2b36 [2023-11-25 00:04:45,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:45,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:45,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:45,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:45,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:45,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a50818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45, skipping insertion in model container [2023-11-25 00:04:45,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:45,738 WARN L240 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_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/sv-benchmarks/c/array-fpi/ifncomp.c[590,603] [2023-11-25 00:04:45,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:45,775 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:04:45,788 WARN L240 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_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/sv-benchmarks/c/array-fpi/ifncomp.c[590,603] [2023-11-25 00:04:45,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:45,826 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:04:45,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45 WrapperNode [2023-11-25 00:04:45,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:45,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:45,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:04:45,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:04:45,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,892 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-11-25 00:04:45,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:45,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:04:45,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:04:45,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:04:45,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:04:45,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:04:45,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:04:45,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:04:45,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (1/1) ... [2023-11-25 00:04:45,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:45,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:45,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:04:45,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:04:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:04:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:04:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:04:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:04:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:04:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:04:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:04:46,089 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:04:46,092 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:04:46,317 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:04:46,468 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:04:46,468 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-25 00:04:46,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:46 BoogieIcfgContainer [2023-11-25 00:04:46,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:04:46,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:04:46,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:04:46,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:04:46,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:04:45" (1/3) ... [2023-11-25 00:04:46,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd2a9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:46, skipping insertion in model container [2023-11-25 00:04:46,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:45" (2/3) ... [2023-11-25 00:04:46,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd2a9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:46, skipping insertion in model container [2023-11-25 00:04:46,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:46" (3/3) ... [2023-11-25 00:04:46,480 INFO L112 eAbstractionObserver]: Analyzing ICFG ifncomp.c [2023-11-25 00:04:46,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:04:46,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:04:46,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:04:46,554 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=LoopHeads, 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;@44437041, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:04:46,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:04:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) 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) [2023-11-25 00:04:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-25 00:04:46,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:46,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:46,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:46,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:46,571 INFO L85 PathProgramCache]: Analyzing trace with hash -24508154, now seen corresponding path program 1 times [2023-11-25 00:04:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21054555] [2023-11-25 00:04:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:46,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:46,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:46,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21054555] [2023-11-25 00:04:46,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-25 00:04:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718527786] [2023-11-25 00:04:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:46,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:46,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:46,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:04:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:46,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:04:46,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:04:47,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:04:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718527786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:47,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:47,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:04:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043687909] [2023-11-25 00:04:47,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:04:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:04:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:04:47,131 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-25 00:04:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:47,219 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2023-11-25 00:04:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:04:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2023-11-25 00:04:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:47,231 INFO L225 Difference]: With dead ends: 22 [2023-11-25 00:04:47,231 INFO L226 Difference]: Without dead ends: 11 [2023-11-25 00:04:47,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:04:47,238 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:47,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:04:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-25 00:04:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-25 00:04:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 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) [2023-11-25 00:04:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2023-11-25 00:04:47,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2023-11-25 00:04:47,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:47,297 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2023-11-25 00:04:47,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-25 00:04:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2023-11-25 00:04:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:04:47,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:47,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:47,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-25 00:04:47,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:04:47,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:47,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1528728229, now seen corresponding path program 1 times [2023-11-25 00:04:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:47,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534319864] [2023-11-25 00:04:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:47,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:47,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162094552] [2023-11-25 00:04:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:47,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:47,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:47,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:47,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:04:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:47,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:04:47,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:04:47,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:04:47,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:47,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534319864] [2023-11-25 00:04:47,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162094552] [2023-11-25 00:04:47,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162094552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:47,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:47,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:04:47,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620935646] [2023-11-25 00:04:47,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:47,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:04:47,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:04:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:04:47,714 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:47,792 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-11-25 00:04:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:04:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-25 00:04:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:47,794 INFO L225 Difference]: With dead ends: 24 [2023-11-25 00:04:47,795 INFO L226 Difference]: Without dead ends: 18 [2023-11-25 00:04:47,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:04:47,802 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:47,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:04:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-25 00:04:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2023-11-25 00:04:47,814 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) [2023-11-25 00:04:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-11-25 00:04:47,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2023-11-25 00:04:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:47,816 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-11-25 00:04:47,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-11-25 00:04:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-25 00:04:47,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:47,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:47,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:48,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-25 00:04:48,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:48,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 6351550, now seen corresponding path program 1 times [2023-11-25 00:04:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014809303] [2023-11-25 00:04:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:48,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:48,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448511555] [2023-11-25 00:04:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:48,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:48,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:04:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:48,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-25 00:04:48,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:48,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-25 00:04:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:04:48,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:48,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:04:48,481 INFO L378 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 4 case distinctions, treesize of input 37 treesize of output 51 [2023-11-25 00:04:48,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-25 00:04:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:04:48,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014809303] [2023-11-25 00:04:48,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448511555] [2023-11-25 00:04:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448511555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [685571321] [2023-11-25 00:04:48,564 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-25 00:04:48,565 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:48,569 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:48,575 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:48,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:49,671 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:49,861 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '235#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem17#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (not (= ~N~0 |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:04:49,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:04:49,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:04:49,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-25 00:04:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511497965] [2023-11-25 00:04:49,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:04:49,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:04:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:04:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:04:49,864 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2023-11-25 00:04:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:50,068 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-11-25 00:04:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:04:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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 11 [2023-11-25 00:04:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:50,070 INFO L225 Difference]: With dead ends: 29 [2023-11-25 00:04:50,070 INFO L226 Difference]: Without dead ends: 27 [2023-11-25 00:04:50,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-25 00:04:50,073 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:50,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:04:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-25 00:04:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2023-11-25 00:04:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 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) [2023-11-25 00:04:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-11-25 00:04:50,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2023-11-25 00:04:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:50,080 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-11-25 00:04:50,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2023-11-25 00:04:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-11-25 00:04:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-25 00:04:50,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:50,082 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:50,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:50,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-25 00:04:50,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:50,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 192605285, now seen corresponding path program 2 times [2023-11-25 00:04:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164455042] [2023-11-25 00:04:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:50,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552007525] [2023-11-25 00:04:50,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:04:50,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:50,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:50,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:50,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:04:50,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-25 00:04:50,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:04:50,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:04:50,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:04:50,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:04:50,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164455042] [2023-11-25 00:04:50,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552007525] [2023-11-25 00:04:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552007525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573475577] [2023-11-25 00:04:50,574 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-25 00:04:50,574 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:50,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:50,575 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:50,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:51,404 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:51,602 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '386#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem17#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (not (= ~N~0 |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:04:51,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:04:51,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:04:51,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-25 00:04:51,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814058078] [2023-11-25 00:04:51,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:04:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:04:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:04:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:04:51,606 INFO L87 Difference]: Start difference. First operand 16 states and 20 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) [2023-11-25 00:04:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:51,805 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-11-25 00:04:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:04:51,807 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 12 [2023-11-25 00:04:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:51,808 INFO L225 Difference]: With dead ends: 45 [2023-11-25 00:04:51,808 INFO L226 Difference]: Without dead ends: 26 [2023-11-25 00:04:51,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:04:51,810 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:51,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:04:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-25 00:04:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2023-11-25 00:04:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-11-25 00:04:51,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2023-11-25 00:04:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:51,822 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-11-25 00:04:51,822 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) [2023-11-25 00:04:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-11-25 00:04:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-25 00:04:51,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:51,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:51,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:52,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:52,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1450073990, now seen corresponding path program 3 times [2023-11-25 00:04:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666222679] [2023-11-25 00:04:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:52,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:52,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249009145] [2023-11-25 00:04:52,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:04:52,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:52,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:52,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:52,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:04:52,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:04:52,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:04:52,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-25 00:04:52,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:52,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-25 00:04:52,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-25 00:04:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:04:52,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:52,901 INFO L378 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 [2023-11-25 00:04:52,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:04:52,995 INFO L378 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 4 case distinctions, treesize of input 37 treesize of output 51 [2023-11-25 00:04:53,014 INFO L378 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 13 treesize of output 1 [2023-11-25 00:04:53,082 INFO L378 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 78 treesize of output 64 [2023-11-25 00:04:53,095 INFO L378 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 [2023-11-25 00:04:53,101 INFO L378 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 34 treesize of output 32 [2023-11-25 00:04:53,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-25 00:04:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-25 00:04:53,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666222679] [2023-11-25 00:04:53,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249009145] [2023-11-25 00:04:53,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249009145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134123183] [2023-11-25 00:04:53,133 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-25 00:04:53,133 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:53,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:53,134 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:53,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:53,862 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:54,052 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '582#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem17#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (not (= ~N~0 |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:04:54,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:04:54,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:04:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-25 00:04:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24321412] [2023-11-25 00:04:54,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:04:54,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-25 00:04:54,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:54,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-25 00:04:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:04:54,056 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:54,465 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2023-11-25 00:04:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-25 00:04:54,466 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-25 00:04:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:54,467 INFO L225 Difference]: With dead ends: 43 [2023-11-25 00:04:54,467 INFO L226 Difference]: Without dead ends: 41 [2023-11-25 00:04:54,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-11-25 00:04:54,469 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:54,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 31 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:04:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-25 00:04:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 20. [2023-11-25 00:04:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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) [2023-11-25 00:04:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-11-25 00:04:54,478 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 14 [2023-11-25 00:04:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:54,478 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-11-25 00:04:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-11-25 00:04:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-25 00:04:54,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:54,480 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:54,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-25 00:04:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:54,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:54,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1814332006, now seen corresponding path program 4 times [2023-11-25 00:04:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:54,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652644423] [2023-11-25 00:04:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:54,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583416417] [2023-11-25 00:04:54,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-25 00:04:54,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:54,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:54,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-25 00:04:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:54,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:04:54,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-25 00:04:54,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-25 00:04:55,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652644423] [2023-11-25 00:04:55,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583416417] [2023-11-25 00:04:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583416417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537393138] [2023-11-25 00:04:55,018 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-25 00:04:55,018 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:55,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:55,018 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:55,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:55,600 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:55,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '796#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem17#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (not (= ~N~0 |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:04:55,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:04:55,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:04:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-25 00:04:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268482252] [2023-11-25 00:04:55,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:04:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-25 00:04:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-25 00:04:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:04:55,775 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:55,975 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2023-11-25 00:04:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:04:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-25 00:04:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:55,977 INFO L225 Difference]: With dead ends: 65 [2023-11-25 00:04:55,977 INFO L226 Difference]: Without dead ends: 50 [2023-11-25 00:04:55,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-25 00:04:55,978 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:55,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 27 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:04:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-25 00:04:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2023-11-25 00:04:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-25 00:04:55,988 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2023-11-25 00:04:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:55,989 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-25 00:04:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-25 00:04:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-25 00:04:55,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:55,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:55,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:56,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-25 00:04:56,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:56,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 378375519, now seen corresponding path program 1 times [2023-11-25 00:04:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318611273] [2023-11-25 00:04:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:56,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592173566] [2023-11-25 00:04:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:56,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:56,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:56,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:56,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:04:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:56,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-25 00:04:56,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:56,606 INFO L378 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 26 treesize of output 24 [2023-11-25 00:04:56,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-25 00:04:56,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-25 00:04:56,740 INFO L378 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 [2023-11-25 00:04:56,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2023-11-25 00:04:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:04:56,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:57,646 INFO L378 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 5 [2023-11-25 00:04:58,097 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse4 (* .cse0 8))) (and (or (< 2147483647 .cse0) (forall ((~N~0 Int) (v_DerPreprocessor_9 (Array Int Int))) (or (= (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_9))) (store .cse1 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (= v_DerPreprocessor_9 (let ((.cse3 (+ .cse4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (store .cse2 .cse3 (select v_DerPreprocessor_9 .cse3)))))))) (or (forall ((v_DerPreprocessor_10 (Array Int Int)) (~N~0 Int)) (= 1 (select (select (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_10))) (store .cse5 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0))) (or (forall ((~N~0 Int) (v_DerPreprocessor_9 (Array Int Int))) (or (not (= (let ((.cse6 (+ .cse4 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (store .cse2 .cse6 (select v_DerPreprocessor_9 .cse6))) v_DerPreprocessor_9)) (= (select (select (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_9))) (store .cse7 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (< .cse0 2147483648))))) is different from false [2023-11-25 00:04:58,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:04:58,167 INFO L378 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 4 case distinctions, treesize of input 37 treesize of output 51 [2023-11-25 00:04:58,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:04:58,184 INFO L378 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 1 case distinctions, treesize of input 9 treesize of output 8 [2023-11-25 00:04:58,336 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-11-25 00:04:58,337 INFO L378 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 307 treesize of output 307 [2023-11-25 00:04:58,355 INFO L378 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 198 treesize of output 194 [2023-11-25 00:04:58,404 INFO L378 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 33 treesize of output 29 [2023-11-25 00:04:58,433 INFO L378 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 88 treesize of output 84 [2023-11-25 00:04:58,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:04:58,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 88 [2023-11-25 00:04:58,584 INFO L378 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 33 treesize of output 29 [2023-11-25 00:04:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-11-25 00:04:58,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318611273] [2023-11-25 00:04:58,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592173566] [2023-11-25 00:04:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592173566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:58,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131075043] [2023-11-25 00:04:58,653 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:04:58,654 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:58,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:58,654 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:58,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:59,300 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:59,815 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1082#(and (not (= (+ ~N~0 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368))) |ULTIMATE.start_main_#t~mem17#1|) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:04:59,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:04:59,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:04:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-25 00:04:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191335649] [2023-11-25 00:04:59,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:04:59,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-25 00:04:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-25 00:04:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=597, Unknown=1, NotChecked=50, Total=756 [2023-11-25 00:04:59,818 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:00,507 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-11-25 00:05:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-25 00:05:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-25 00:05:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:00,508 INFO L225 Difference]: With dead ends: 45 [2023-11-25 00:05:00,508 INFO L226 Difference]: Without dead ends: 32 [2023-11-25 00:05:00,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=202, Invalid=923, Unknown=1, NotChecked=64, Total=1190 [2023-11-25 00:05:00,509 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:00,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 29 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2023-11-25 00:05:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-25 00:05:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2023-11-25 00:05:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 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) [2023-11-25 00:05:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-25 00:05:00,518 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2023-11-25 00:05:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:00,518 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-25 00:05:00,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-25 00:05:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-25 00:05:00,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:00,519 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:00,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-25 00:05:00,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:00,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1060252827, now seen corresponding path program 5 times [2023-11-25 00:05:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485527798] [2023-11-25 00:05:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:00,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:00,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135867857] [2023-11-25 00:05:00,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:05:00,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:00,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:00,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:00,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-25 00:05:02,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-25 00:05:02,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:05:02,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:05:02,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-25 00:05:02,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-25 00:05:02,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485527798] [2023-11-25 00:05:02,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135867857] [2023-11-25 00:05:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135867857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1686604609] [2023-11-25 00:05:02,265 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-25 00:05:02,265 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:05:02,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:05:02,266 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:05:02,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:05:02,796 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:05:02,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1335#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem17#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (not (= ~N~0 |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:05:02,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:05:02,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:05:02,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-11-25 00:05:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511264521] [2023-11-25 00:05:02,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:05:02,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-25 00:05:02,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-25 00:05:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-25 00:05:02,999 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2023-11-25 00:05:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:03,360 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2023-11-25 00:05:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-25 00:05:03,361 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-25 00:05:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:03,362 INFO L225 Difference]: With dead ends: 89 [2023-11-25 00:05:03,362 INFO L226 Difference]: Without dead ends: 69 [2023-11-25 00:05:03,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-11-25 00:05:03,363 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 86 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:03,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 52 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:05:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-25 00:05:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 40. [2023-11-25 00:05:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-11-25 00:05:03,375 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 18 [2023-11-25 00:05:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:03,376 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-11-25 00:05:03,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2023-11-25 00:05:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-11-25 00:05:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-25 00:05:03,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:03,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:03,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:03,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:03,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:03,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:03,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1460558912, now seen corresponding path program 2 times [2023-11-25 00:05:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:03,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391692250] [2023-11-25 00:05:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:03,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720154904] [2023-11-25 00:05:03,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:05:03,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:03,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:03,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:03,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-25 00:05:04,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-25 00:05:04,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:05:04,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:05:04,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:05:04,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:05:04,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391692250] [2023-11-25 00:05:04,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720154904] [2023-11-25 00:05:04,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720154904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1290133132] [2023-11-25 00:05:04,695 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:05:04,695 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:05:04,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:05:04,696 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:05:04,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:05:05,253 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:05:05,532 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1674#(and (not (= (+ ~N~0 (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|)) |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~N~0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647)) (and (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368))) |ULTIMATE.start_main_#t~mem17#1|) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:05:05,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:05:05,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:05:05,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-25 00:05:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53343853] [2023-11-25 00:05:05,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:05:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-25 00:05:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-25 00:05:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-25 00:05:05,534 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:05,867 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-11-25 00:05:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-25 00:05:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-25 00:05:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:05,868 INFO L225 Difference]: With dead ends: 60 [2023-11-25 00:05:05,868 INFO L226 Difference]: Without dead ends: 53 [2023-11-25 00:05:05,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-11-25 00:05:05,869 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 68 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:05,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 33 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:05:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-25 00:05:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2023-11-25 00:05:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-11-25 00:05:05,881 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2023-11-25 00:05:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:05,881 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-11-25 00:05:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-11-25 00:05:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-25 00:05:05,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:05,883 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:05,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:06,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:06,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash -967092730, now seen corresponding path program 6 times [2023-11-25 00:05:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:06,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796717830] [2023-11-25 00:05:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:06,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:06,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373316666] [2023-11-25 00:05:06,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:05:06,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:06,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:06,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:06,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-25 00:05:08,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:05:08,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:05:08,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-25 00:05:08,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:08,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-25 00:05:08,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-25 00:05:08,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-25 00:05:08,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-25 00:05:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:05:08,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:08,698 INFO L378 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 [2023-11-25 00:05:08,938 INFO L378 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 [2023-11-25 00:05:09,282 INFO L378 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 [2023-11-25 00:05:10,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:05:10,081 INFO L378 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 4 case distinctions, treesize of input 37 treesize of output 51 [2023-11-25 00:05:10,107 INFO L378 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 13 treesize of output 1 [2023-11-25 00:05:10,350 INFO L378 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 34 treesize of output 32 [2023-11-25 00:05:10,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-25 00:05:10,382 INFO L378 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 [2023-11-25 00:05:10,388 INFO L378 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 186 treesize of output 182 [2023-11-25 00:05:10,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2023-11-25 00:05:10,431 INFO L378 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 34 treesize of output 32 [2023-11-25 00:05:10,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-25 00:05:10,446 INFO L378 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 184 treesize of output 182 [2023-11-25 00:05:10,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 150 [2023-11-25 00:05:10,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2023-11-25 00:05:10,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2023-11-25 00:05:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-25 00:05:10,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796717830] [2023-11-25 00:05:10,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373316666] [2023-11-25 00:05:10,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373316666] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [190277935] [2023-11-25 00:05:10,615 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-25 00:05:10,615 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:05:10,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:05:10,615 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:05:10,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:05:11,173 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:05:11,389 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1981#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 ~N~0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_#t~mem17#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (not (= ~N~0 |ULTIMATE.start_main_#t~mem17#1|)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-25 00:05:11,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:05:11,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:05:11,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-25 00:05:11,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927930285] [2023-11-25 00:05:11,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-25 00:05:11,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-25 00:05:11,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:11,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-25 00:05:11,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-11-25 00:05:11,392 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2023-11-25 00:05:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:13,492 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2023-11-25 00:05:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-25 00:05:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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 [2023-11-25 00:05:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:13,495 INFO L225 Difference]: With dead ends: 97 [2023-11-25 00:05:13,495 INFO L226 Difference]: Without dead ends: 95 [2023-11-25 00:05:13,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=285, Invalid=1275, Unknown=0, NotChecked=0, Total=1560 [2023-11-25 00:05:13,497 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 125 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:13,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 114 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:05:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-25 00:05:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 44. [2023-11-25 00:05:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-25 00:05:13,514 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 20 [2023-11-25 00:05:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:13,515 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-25 00:05:13,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2023-11-25 00:05:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-25 00:05:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-25 00:05:13,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:13,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:13,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:13,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-25 00:05:13,725 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:13,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1160135129, now seen corresponding path program 3 times [2023-11-25 00:05:13,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:13,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606572495] [2023-11-25 00:05:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:13,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:13,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392718914] [2023-11-25 00:05:13,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:05:13,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:13,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:13,754 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:13,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07d4f2a3-5b8b-42b2-bd5f-2d7493ad24ba/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-25 00:05:14,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:05:14,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:05:14,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-25 00:05:14,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:14,809 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-25 00:05:14,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-11-25 00:05:14,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-25 00:05:14,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-11-25 00:05:14,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2023-11-25 00:05:15,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2023-11-25 00:05:15,230 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2023-11-25 00:05:15,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 54 [2023-11-25 00:05:15,364 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-25 00:05:15,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 86 treesize of output 66 [2023-11-25 00:05:15,587 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-25 00:05:15,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 82 treesize of output 76 [2023-11-25 00:05:15,728 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-25 00:05:15,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 95 treesize of output 88 [2023-11-25 00:05:15,898 INFO L349 Elim1Store]: treesize reduction 96, result has 13.5 percent of original size [2023-11-25 00:05:15,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 104 treesize of output 93 [2023-11-25 00:05:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:16,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:16,763 INFO L378 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 5 [2023-11-25 00:05:25,120 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse16 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse34 (mod .cse16 4294967296)) (.cse31 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse23 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse32 (* .cse31 8)) (.cse33 (* .cse34 8))) (let ((.cse0 (< 2147483647 .cse31)) (.cse4 (+ .cse33 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse19 (< 2147483647 .cse34)) (.cse6 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ .cse32 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (< .cse34 2147483648)) (.cse11 (+ .cse33 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (+ .cse32 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse20 (< .cse31 2147483648)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse21 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse22 (* 8 .cse23))) (and (or (let ((.cse5 (+ (select .cse21 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse22)) (select .cse7 (+ (- 34359738368) .cse22 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse0 (and (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_DerPreprocessor_57 (Array Int Int))) (or (< v_ArrVal_714 (+ (select v_DerPreprocessor_57 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (= (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store v_DerPreprocessor_57 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_714)))) (store .cse1 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0))) (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse3 (store .cse7 .cse8 v_ArrVal_712))) (or (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse3 .cse4 v_ArrVal_714)))) (store .cse2 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_712 .cse5) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) (or (and (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse10 (store .cse7 .cse13 v_ArrVal_712))) (or (= (select (select (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse10 .cse11 v_ArrVal_714)))) (store .cse9 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_712 .cse5) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12)))))) .cse14) (or (and (or (forall ((~N~0 Int) (v_DerPreprocessor_56 (Array Int Int))) (= (select (select (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56))) (store .cse15 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse15 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (not (= .cse16 0))) (forall ((v_ArrVal_712 Int)) (or (forall ((v_ArrVal_714 Int)) (let ((.cse18 (store .cse7 .cse13 v_ArrVal_712))) (or (forall ((~N~0 Int)) (= (select (select (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse18 .cse4 v_ArrVal_714)))) (store .cse17 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12)))))) (< v_ArrVal_712 .cse5)))) .cse19)) .cse20))) (< .cse23 2147483648)) (or (< 2147483647 .cse23) (let ((.cse26 (+ (select .cse7 (+ .cse22 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse21 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse22))))) (and (or .cse0 (and (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse25 (store .cse7 .cse8 v_ArrVal_712))) (or (= (select (select (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse25 .cse4 v_ArrVal_714)))) (store .cse24 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse24 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_712 .cse26) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))) .cse19) (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse28 (store .cse7 .cse8 v_ArrVal_712))) (or (= (select (select (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse28 .cse11 v_ArrVal_714)))) (store .cse27 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse27 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_712 .cse26) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse28) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))) .cse14))) (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse30 (store .cse7 .cse13 v_ArrVal_712))) (or (= (select (select (let ((.cse29 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse30 .cse11 v_ArrVal_714)))) (store .cse29 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse29 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_712 .cse26) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse30) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12)))))) .cse20))))))))) is different from false [2023-11-25 00:05:29,640 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse57 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse58 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse56 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse55 (mod .cse58 4294967296)) (.cse51 (mod .cse57 4294967296))) (let ((.cse52 (* .cse51 8)) (.cse53 (* 8 .cse55)) (.cse54 (* .cse56 8)) (.cse6 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse23 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse6) |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse13 (not (= .cse58 0))) (.cse24 (+ .cse54 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse25 (+ .cse54 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (not (= .cse57 0))) (.cse26 (< .cse56 2147483648)) (.cse27 (< 2147483647 .cse56)) (.cse0 (< 2147483647 .cse51)) (.cse18 (< 2147483647 .cse55)) (.cse4 (+ .cse53 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse19 (< .cse55 2147483648)) (.cse5 (+ .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ .cse52 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse52 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse36 (+ .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse35 (+ .cse54 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse22 (+ .cse53 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse17 (+ .cse52 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (< .cse51 2147483648))) (and (or (let ((.cse1 (+ (select .cse23 .cse24) (select .cse6 .cse25)))) (and (or .cse0 (and (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse3 (store .cse6 .cse7 v_ArrVal_712))) (or (< v_ArrVal_712 .cse1) (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse3 .cse4 v_ArrVal_714)))) (store .cse2 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) (or .cse8 (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_DerPreprocessor_57 (Array Int Int))) (or (< v_ArrVal_714 (+ (select v_DerPreprocessor_57 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (= (select (select (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store v_DerPreprocessor_57 .cse10 v_ArrVal_714)))) (store .cse9 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))))) (or .cse11 (and (or (and (or (forall ((~N~0 Int) (v_DerPreprocessor_56 (Array Int Int))) (= (select (select (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56))) (store .cse12 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse12 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) .cse13) (forall ((v_ArrVal_712 Int)) (or (< v_ArrVal_712 .cse1) (forall ((v_ArrVal_714 Int)) (let ((.cse14 (store .cse6 .cse17 v_ArrVal_712))) (or (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse14) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (forall ((~N~0 Int)) (= (select (select (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse14 .cse4 v_ArrVal_714)))) (store .cse16 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))))))) .cse18) (or .cse19 (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse20 (store .cse6 .cse17 v_ArrVal_712))) (or (< v_ArrVal_712 .cse1) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse20) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (= (select (select (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse20 .cse22 v_ArrVal_714)))) (store .cse21 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse21 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))))) .cse26) (or .cse27 (let ((.cse29 (+ (select .cse6 .cse35) (select .cse23 .cse36)))) (and (or .cse11 (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse28 (store .cse6 .cse17 v_ArrVal_712))) (or (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse28) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (< v_ArrVal_712 .cse29) (= (select (select (let ((.cse30 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse28 .cse22 v_ArrVal_714)))) (store .cse30 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse30 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))) (or .cse0 (and (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse32 (store .cse6 .cse7 v_ArrVal_712))) (or (= (select (select (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse32 .cse4 v_ArrVal_714)))) (store .cse31 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse31 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse32) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (< v_ArrVal_712 .cse29)))) .cse18) (or (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int)) (let ((.cse33 (store .cse6 .cse7 v_ArrVal_712))) (or (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse33) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (= (select (select (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse33 .cse22 v_ArrVal_714)))) (store .cse34 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse34 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_ArrVal_712 .cse29)))) .cse19)))))) (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (and (or (and (or .cse11 (and (or (and (or (forall ((v_prenex_121 Int) (v_DerPreprocessor_56 (Array Int Int))) (= (select (select (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_56))) (store .cse37 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse37 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_121))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) .cse13) (forall ((~N~0 Int) (v_ArrVal_714 Int) (v_ArrVal_712 Int) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse38 (store v_DerPreprocessor_58 .cse17 v_ArrVal_712))) (or (< v_ArrVal_712 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24) (select v_DerPreprocessor_58 .cse25))) (< v_ArrVal_714 (+ v_ArrVal_712 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse38) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (= (select (select (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse38 .cse4 v_ArrVal_714)))) (store .cse39 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse39 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| ~N~0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))) .cse18) (or .cse19 (forall ((v_prenex_123 Int) (v_prenex_124 Int) (v_prenex_122 Int) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse41 (store v_DerPreprocessor_58 .cse17 v_prenex_124))) (or (< v_prenex_124 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24) (select v_DerPreprocessor_58 .cse25))) (= (select (select (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse41 .cse22 v_prenex_123)))) (store .cse40 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse40 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_122))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_prenex_123 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse41) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15) v_prenex_124)))))))) (or (and (forall ((v_prenex_127 Int) (v_prenex_128 Int) (v_prenex_129 Int) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse43 (store v_DerPreprocessor_58 .cse7 v_prenex_129))) (or (= (select (select (let ((.cse42 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse43 .cse4 v_prenex_128)))) (store .cse42 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse42 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_127))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_prenex_129 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24) (select v_DerPreprocessor_58 .cse25))) (< v_prenex_128 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse43) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) v_prenex_129))))) (or (forall ((v_prenex_125 Int) (v_prenex_126 Int) (v_DerPreprocessor_57 (Array Int Int))) (or (= (select (select (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store v_DerPreprocessor_57 .cse10 v_prenex_126)))) (store .cse44 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse44 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_125))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_prenex_126 (+ (select v_DerPreprocessor_57 |c_ULTIMATE.start_main_~b~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_57) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) .cse8)) .cse0)) .cse26) (or .cse27 (and (or .cse0 (and (or .cse18 (forall ((v_prenex_134 Int) (v_prenex_135 Int) (v_prenex_133 Int) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse46 (store v_DerPreprocessor_58 .cse7 v_prenex_135))) (or (< v_prenex_135 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~a~0#1.base|) .cse36) (select v_DerPreprocessor_58 .cse35))) (= (select (select (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse46 .cse4 v_prenex_134)))) (store .cse45 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse45 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_133))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< v_prenex_134 (+ v_prenex_135 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse46) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))) (or .cse19 (forall ((v_prenex_132 Int) (v_prenex_130 Int) (v_prenex_131 Int) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse47 (store v_DerPreprocessor_58 .cse7 v_prenex_132))) (or (< v_prenex_132 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~a~0#1.base|) .cse36) (select v_DerPreprocessor_58 .cse35))) (< v_prenex_131 (+ v_prenex_132 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse47) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (= (select (select (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse47 .cse22 v_prenex_131)))) (store .cse48 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse48 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_130))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))) (or (forall ((v_prenex_138 Int) (v_prenex_136 Int) (v_prenex_137 Int) (v_DerPreprocessor_58 (Array Int Int))) (let ((.cse49 (store v_DerPreprocessor_58 .cse17 v_prenex_138))) (or (< v_prenex_137 (+ v_prenex_138 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (< v_prenex_138 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_58) |c_ULTIMATE.start_main_~a~0#1.base|) .cse36) (select v_DerPreprocessor_58 .cse35))) (= (select (select (let ((.cse50 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse49 .cse22 v_prenex_137)))) (store .cse50 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse50 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_prenex_136))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) .cse11)))))))))) is different from true