./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:13:43,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:13:43,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:13:43,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:13:43,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:13:43,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:13:43,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:13:43,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:13:43,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:13:43,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:13:43,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:13:43,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:13:43,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:13:43,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:13:43,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:13:43,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:13:43,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:13:43,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:13:43,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:13:43,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:13:43,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:13:43,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:13:43,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:13:43,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:13:43,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:13:43,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:13:43,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:13:43,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:13:43,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:13:43,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:13:43,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:13:43,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:13:43,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:13:43,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:13:43,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:13:43,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:13:43,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:13:43,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:13:43,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:13:43,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:13:43,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:13:43,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:13:43,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:13:43,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:13:43,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:13:43,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:13:43,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:13:43,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:13:43,109 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:13:43,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:13:43,110 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:13:43,110 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:13:43,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:13:43,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:13:43,110 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:13:43,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:13:43,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:13:43,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:13:43,112 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:13:43,112 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:13:43,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:13:43,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:13:43,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:13:43,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:13:43,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:13:43,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:13:43,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:13:43,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:13:43,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:13:43,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:13:43,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:13:43,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:13:43,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:13:43,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:13:43,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:43,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:13:43,117 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:13:43,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:13:43,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:13:43,117 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:13:43,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:13:43,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:13:43,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:13:43,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba [2022-11-03 02:13:43,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:13:43,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:13:43,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:13:43,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:13:43,400 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:13:43,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2022-11-03 02:13:43,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/a1e6a8c3d/f92a77fa83134418a9562e157a6de591/FLAG7f8d424fd [2022-11-03 02:13:44,042 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:13:44,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2022-11-03 02:13:44,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/a1e6a8c3d/f92a77fa83134418a9562e157a6de591/FLAG7f8d424fd [2022-11-03 02:13:44,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/a1e6a8c3d/f92a77fa83134418a9562e157a6de591 [2022-11-03 02:13:44,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:13:44,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:13:44,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:44,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:13:44,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:13:44,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26194b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44, skipping insertion in model container [2022-11-03 02:13:44,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:13:44,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:13:44,735 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2022-11-03 02:13:44,739 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2022-11-03 02:13:44,744 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2022-11-03 02:13:44,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:44,763 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:13:44,817 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2022-11-03 02:13:44,819 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2022-11-03 02:13:44,830 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2022-11-03 02:13:44,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:44,871 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:13:44,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44 WrapperNode [2022-11-03 02:13:44,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:44,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:44,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:13:44,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:13:44,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,935 INFO L138 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 136 [2022-11-03 02:13:44,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:44,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:13:44,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:13:44,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:13:44,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,963 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:13:44,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:13:44,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:13:44,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:13:44,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (1/1) ... [2022-11-03 02:13:44,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:44,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:45,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:13:45,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:13:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:13:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:13:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:13:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:13:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:13:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:13:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:13:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:13:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:13:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:13:45,178 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:13:45,196 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:13:45,500 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:13:45,637 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:13:45,638 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-03 02:13:45,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:45 BoogieIcfgContainer [2022-11-03 02:13:45,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:13:45,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:13:45,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:13:45,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:13:45,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:13:44" (1/3) ... [2022-11-03 02:13:45,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67019462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:45, skipping insertion in model container [2022-11-03 02:13:45,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:44" (2/3) ... [2022-11-03 02:13:45,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67019462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:45, skipping insertion in model container [2022-11-03 02:13:45,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:45" (3/3) ... [2022-11-03 02:13:45,653 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2022-11-03 02:13:45,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:13:45,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:13:45,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:13:45,753 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@500bda37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:13:45,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:13:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:13:45,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:45,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:13:45,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 986255260, now seen corresponding path program 1 times [2022-11-03 02:13:45,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:45,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887127081] [2022-11-03 02:13:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:45,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:45,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887127081] [2022-11-03 02:13:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887127081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:45,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:45,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:13:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401788181] [2022-11-03 02:13:46,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:46,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:13:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:13:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:13:46,047 INFO L87 Difference]: Start difference. First operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:46,172 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-03 02:13:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:13:46,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-03 02:13:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:46,182 INFO L225 Difference]: With dead ends: 47 [2022-11-03 02:13:46,183 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 02:13:46,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:13:46,189 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:46,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:13:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 02:13:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-03 02:13:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-03 02:13:46,231 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2022-11-03 02:13:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:46,232 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-03 02:13:46,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-03 02:13:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:13:46,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:46,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:46,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 778217614, now seen corresponding path program 1 times [2022-11-03 02:13:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:46,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894054510] [2022-11-03 02:13:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:46,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:46,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894054510] [2022-11-03 02:13:46,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894054510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:46,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:46,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:13:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654371779] [2022-11-03 02:13:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:13:46,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:46,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:13:46,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:13:46,703 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:46,994 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-11-03 02:13:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:13:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:13:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:46,996 INFO L225 Difference]: With dead ends: 52 [2022-11-03 02:13:46,996 INFO L226 Difference]: Without dead ends: 33 [2022-11-03 02:13:46,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:13:46,997 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:46,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 55 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:13:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-03 02:13:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2022-11-03 02:13:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-03 02:13:47,004 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2022-11-03 02:13:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:47,005 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-03 02:13:47,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-03 02:13:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:13:47,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:47,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:13:47,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash 778216364, now seen corresponding path program 1 times [2022-11-03 02:13:47,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:47,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352630044] [2022-11-03 02:13:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:47,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:47,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352630044] [2022-11-03 02:13:47,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352630044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:47,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:47,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:47,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576965361] [2022-11-03 02:13:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:13:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:13:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:13:47,056 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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) [2022-11-03 02:13:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:47,179 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-11-03 02:13:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:13:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 [2022-11-03 02:13:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:47,181 INFO L225 Difference]: With dead ends: 47 [2022-11-03 02:13:47,181 INFO L226 Difference]: Without dead ends: 37 [2022-11-03 02:13:47,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:13:47,183 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:47,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:13:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-03 02:13:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-03 02:13:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-03 02:13:47,190 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2022-11-03 02:13:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:47,191 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-03 02:13:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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) [2022-11-03 02:13:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-03 02:13:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:13:47,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:47,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:47,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:13:47,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1431075233, now seen corresponding path program 1 times [2022-11-03 02:13:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267060319] [2022-11-03 02:13:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:47,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:47,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267060319] [2022-11-03 02:13:47,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267060319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:13:47,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333704548] [2022-11-03 02:13:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:47,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:13:47,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:47,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:13:47,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:13:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:47,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:13:47,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:48,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-11-03 02:13:48,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:48,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 17 [2022-11-03 02:13:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:48,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 17 [2022-11-03 02:13:48,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 02:13:48,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:48,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 02:13:48,318 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:13:48,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-03 02:13:48,329 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 02:13:48,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 02:13:48,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2022-11-03 02:13:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:48,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:48,565 INFO L356 Elim1Store]: treesize reduction 14, result has 69.6 percent of original size [2022-11-03 02:13:48,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 258 [2022-11-03 02:13:48,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 35 [2022-11-03 02:13:48,999 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|))) (let ((.cse4 (select .cse2 |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse0 (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (.cse1 (= .cse4 0)) (.cse3 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (and (or (and .cse0 .cse1) (forall ((v_ArrVal_164 (Array Int Int)) (v_ArrVal_171 Int)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse2 .cse3 v_ArrVal_171)) .cse4 v_ArrVal_164) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)))) (or (not .cse0) (not .cse1) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_74| Int) (v_ArrVal_171 Int) (v_ArrVal_158 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store (store .cse2 .cse3 v_ArrVal_171) |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.base_74|)) |v_ULTIMATE.start_main_~x~0#1.base_74| v_ArrVal_158) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_74|))) (= |v_ULTIMATE.start_main_~x~0#1.base_74| 0)))))))) is different from false [2022-11-03 02:13:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:49,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333704548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1261052684] [2022-11-03 02:13:49,090 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 02:13:49,090 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:13:49,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:13:49,099 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:13:49,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:13:49,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 7 [2022-11-03 02:13:49,174 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:13:49,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:13:49,227 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:13:49,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:13:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 02:13:49,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 37 [2022-11-03 02:13:49,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 362 treesize of output 384 [2022-11-03 02:13:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:13:49,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:13:49,849 INFO L356 Elim1Store]: treesize reduction 162, result has 13.8 percent of original size [2022-11-03 02:13:49,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:13:50,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:13:50,051 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_56| input size 141 context size 141 output size 141 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:13:50,054 INFO L158 Benchmark]: Toolchain (without parser) took 5729.02ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 62.3MB in the beginning and 74.6MB in the end (delta: -12.4MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2022-11-03 02:13:50,054 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:13:50,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.08ms. Allocated memory is still 107.0MB. Free memory was 62.0MB in the beginning and 74.3MB in the end (delta: -12.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:13:50,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.42ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:13:50,055 INFO L158 Benchmark]: Boogie Preprocessor took 27.91ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:13:50,056 INFO L158 Benchmark]: RCFGBuilder took 672.63ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 46.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 02:13:50,056 INFO L158 Benchmark]: TraceAbstraction took 4411.26ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 46.1MB in the beginning and 74.6MB in the end (delta: -28.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-03 02:13:50,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.08ms. Allocated memory is still 107.0MB. Free memory was 62.0MB in the beginning and 74.3MB in the end (delta: -12.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.42ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.91ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 672.63ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 46.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4411.26ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 46.1MB in the beginning and 74.6MB in the end (delta: -28.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_56| input size 141 context size 141 output size 141 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_56| input size 141 context size 141 output size 141: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:13:50,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:13:52,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:13:52,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:13:52,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:13:52,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:13:52,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:13:52,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:13:52,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:13:52,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:13:52,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:13:52,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:13:52,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:13:52,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:13:52,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:13:52,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:13:52,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:13:52,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:13:52,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:13:52,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:13:52,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:13:52,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:13:52,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:13:52,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:13:52,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:13:52,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:13:52,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:13:52,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:13:52,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:13:52,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:13:52,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:13:52,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:13:52,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:13:52,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:13:52,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:13:52,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:13:52,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:13:52,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:13:52,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:13:52,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:13:52,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:13:52,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:13:52,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:13:52,588 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:13:52,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:13:52,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:13:52,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:13:52,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:13:52,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:13:52,593 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:13:52,593 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:13:52,593 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:13:52,594 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:13:52,595 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:13:52,595 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:13:52,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:13:52,597 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:13:52,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:13:52,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:13:52,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:13:52,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:13:52,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:13:52,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:13:52,598 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:13:52,598 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:13:52,599 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:13:52,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:13:52,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:13:52,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:13:52,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:13:52,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:13:52,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:13:52,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:52,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:13:52,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:13:52,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:13:52,601 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:13:52,602 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:13:52,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:13:52,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:13:52,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:13:52,603 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba [2022-11-03 02:13:52,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:13:52,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:13:52,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:13:52,962 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:13:52,963 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:13:52,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2022-11-03 02:13:53,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/616daac35/ebfd46e6992b4f4980022ab8dc81aa8c/FLAG2caa647e4 [2022-11-03 02:13:53,598 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:13:53,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2022-11-03 02:13:53,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/616daac35/ebfd46e6992b4f4980022ab8dc81aa8c/FLAG2caa647e4 [2022-11-03 02:13:53,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/data/616daac35/ebfd46e6992b4f4980022ab8dc81aa8c [2022-11-03 02:13:53,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:13:53,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:13:53,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:53,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:13:53,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:13:53,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:53" (1/1) ... [2022-11-03 02:13:53,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4bfb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:53, skipping insertion in model container [2022-11-03 02:13:53,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:13:53" (1/1) ... [2022-11-03 02:13:53,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:13:53,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:13:54,346 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2022-11-03 02:13:54,353 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2022-11-03 02:13:54,359 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2022-11-03 02:13:54,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:54,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:13:54,439 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22251,22264] [2022-11-03 02:13:54,444 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22336,22349] [2022-11-03 02:13:54,452 WARN L230 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_b8bcbb74-89af-472e-b645-1ca3dfa51f67/sv-benchmarks/c/forester-heap/sll-reverse_simple.i[22829,22842] [2022-11-03 02:13:54,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:13:54,493 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:13:54,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54 WrapperNode [2022-11-03 02:13:54,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:13:54,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:54,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:13:54,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:13:54,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,575 INFO L138 Inliner]: procedures = 122, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2022-11-03 02:13:54,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:13:54,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:13:54,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:13:54,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:13:54,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,637 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:13:54,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:13:54,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:13:54,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:13:54,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (1/1) ... [2022-11-03 02:13:54,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:13:54,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:54,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:13:54,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:13:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:13:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:13:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:13:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:13:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:13:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:13:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:13:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:13:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:13:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:13:54,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:13:54,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:13:55,248 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:13:55,254 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:13:55,255 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-03 02:13:55,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:55 BoogieIcfgContainer [2022-11-03 02:13:55,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:13:55,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:13:55,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:13:55,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:13:55,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:13:53" (1/3) ... [2022-11-03 02:13:55,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184290d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:55, skipping insertion in model container [2022-11-03 02:13:55,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:13:54" (2/3) ... [2022-11-03 02:13:55,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184290d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:13:55, skipping insertion in model container [2022-11-03 02:13:55,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:13:55" (3/3) ... [2022-11-03 02:13:55,265 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2022-11-03 02:13:55,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:13:55,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:13:55,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:13:55,337 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@639b8894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:13:55,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:13:55,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:13:55,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:55,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:55,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:55,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1808873062, now seen corresponding path program 1 times [2022-11-03 02:13:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:13:55,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520682426] [2022-11-03 02:13:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:55,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:13:55,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:13:55,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:13:55,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:13:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:13:55,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:13:55,528 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:13:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520682426] [2022-11-03 02:13:55,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520682426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:55,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:55,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:13:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675025150] [2022-11-03 02:13:55,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:13:55,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:13:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:13:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:13:55,569 INFO L87 Difference]: Start difference. First operand has 35 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:55,594 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2022-11-03 02:13:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:13:55,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:13:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:55,605 INFO L225 Difference]: With dead ends: 67 [2022-11-03 02:13:55,605 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:13:55,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:13:55,614 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:55,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:13:55,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:13:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-03 02:13:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-03 02:13:55,654 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2022-11-03 02:13:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:55,655 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-03 02:13:55,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-03 02:13:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:13:55,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:55,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:55,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:13:55,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:13:55,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash 239687661, now seen corresponding path program 1 times [2022-11-03 02:13:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:13:55,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780929338] [2022-11-03 02:13:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:55,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:13:55,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:13:55,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:13:55,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:13:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:55,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:13:55,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:56,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:13:56,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:13:56,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780929338] [2022-11-03 02:13:56,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780929338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:56,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:56,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:13:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978160814] [2022-11-03 02:13:56,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:56,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:13:56,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:13:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:13:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:13:56,044 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:56,205 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2022-11-03 02:13:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:13:56,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:13:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:56,207 INFO L225 Difference]: With dead ends: 54 [2022-11-03 02:13:56,207 INFO L226 Difference]: Without dead ends: 40 [2022-11-03 02:13:56,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:13:56,209 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:56,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 49 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:13:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-03 02:13:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-11-03 02:13:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-03 02:13:56,219 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 8 [2022-11-03 02:13:56,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:56,220 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-03 02:13:56,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-03 02:13:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:13:56,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:56,221 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:56,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 02:13:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:13:56,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1200905122, now seen corresponding path program 1 times [2022-11-03 02:13:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:13:56,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952914259] [2022-11-03 02:13:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:56,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:13:56,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:13:56,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:13:56,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:13:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:56,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:13:56,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:56,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 17 [2022-11-03 02:13:56,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2022-11-03 02:13:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:56,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:56,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:13:56,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952914259] [2022-11-03 02:13:56,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952914259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1545696821] [2022-11-03 02:13:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:56,939 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:13:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:13:56,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:13:56,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 02:13:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:57,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:13:57,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:57,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 17 [2022-11-03 02:13:57,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2022-11-03 02:13:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:57,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:57,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1545696821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:57,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989474583] [2022-11-03 02:13:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:57,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:13:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:57,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:13:57,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:13:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:57,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:13:57,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:57,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 17 [2022-11-03 02:13:57,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2022-11-03 02:13:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:57,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:57,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989474583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:57,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:13:57,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 6 [2022-11-03 02:13:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313710356] [2022-11-03 02:13:57,448 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:13:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:13:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:13:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:13:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:13:57,451 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:58,027 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-11-03 02:13:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:13:58,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:13:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:58,031 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:13:58,031 INFO L226 Difference]: Without dead ends: 31 [2022-11-03 02:13:58,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:13:58,032 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:58,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 49 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:13:58,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-03 02:13:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-03 02:13:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-03 02:13:58,043 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 13 [2022-11-03 02:13:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:58,044 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-03 02:13:58,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:13:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-03 02:13:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:13:58,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:58,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:58,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:13:58,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:13:58,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:13:58,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:13:58,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:58,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash 825424614, now seen corresponding path program 1 times [2022-11-03 02:13:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:13:58,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996920863] [2022-11-03 02:13:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:58,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:13:58,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:13:58,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:13:58,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:13:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:58,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:13:58,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:58,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:13:58,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 02:13:58,967 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:13:58,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-03 02:13:58,985 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:13:58,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-03 02:13:59,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2022-11-03 02:13:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:59,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:13:59,116 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:13:59,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-11-03 02:13:59,133 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:13:59,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 41 [2022-11-03 02:13:59,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 18 [2022-11-03 02:13:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:59,524 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:13:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996920863] [2022-11-03 02:13:59,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996920863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:13:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37985192] [2022-11-03 02:13:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:59,525 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:13:59,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:13:59,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:13:59,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-03 02:13:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:59,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:13:59,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:59,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:13:59,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 02:13:59,956 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:13:59,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-03 02:13:59,972 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:13:59,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-03 02:14:00,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2022-11-03 02:14:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:00,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:00,107 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:00,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-11-03 02:14:00,123 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:00,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 41 [2022-11-03 02:14:00,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 18 [2022-11-03 02:14:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:00,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [37985192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511272215] [2022-11-03 02:14:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:00,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:00,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:00,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:00,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:14:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:00,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:14:00,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:00,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:14:00,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 02:14:00,651 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:14:00,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-03 02:14:00,664 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:14:00,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-03 02:14:00,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2022-11-03 02:14:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:00,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:00,713 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:00,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-11-03 02:14:00,727 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:00,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 41 [2022-11-03 02:14:00,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 18 [2022-11-03 02:14:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:01,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511272215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:01,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:14:01,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 15 [2022-11-03 02:14:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459143467] [2022-11-03 02:14:01,009 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:14:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:14:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:14:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:14:01,011 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:02,482 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2022-11-03 02:14:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:14:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:14:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:02,489 INFO L225 Difference]: With dead ends: 81 [2022-11-03 02:14:02,489 INFO L226 Difference]: Without dead ends: 71 [2022-11-03 02:14:02,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:14:02,491 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 169 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:02,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 133 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 171 Invalid, 0 Unknown, 17 Unchecked, 1.2s Time] [2022-11-03 02:14:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-03 02:14:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2022-11-03 02:14:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2022-11-03 02:14:02,503 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2022-11-03 02:14:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:02,504 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2022-11-03 02:14:02,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2022-11-03 02:14:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:14:02,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:02,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:02,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:02,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:02,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:03,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:03,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1505482984, now seen corresponding path program 1 times [2022-11-03 02:14:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:03,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882521068] [2022-11-03 02:14:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:03,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:03,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:03,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:14:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:03,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:14:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:03,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:03,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 17 [2022-11-03 02:14:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:03,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-03 02:14:03,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 18 treesize of output 10 [2022-11-03 02:14:03,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 17 [2022-11-03 02:14:03,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-03 02:14:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:03,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:03,704 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:03,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 51 [2022-11-03 02:14:03,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 26 [2022-11-03 02:14:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:03,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882521068] [2022-11-03 02:14:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882521068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [371480963] [2022-11-03 02:14:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:03,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:14:03,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:14:03,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:14:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:04,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:14:04,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:04,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:04,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 17 [2022-11-03 02:14:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:04,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 17 [2022-11-03 02:14:04,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:04,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:14:04,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:14:04,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [371480963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:04,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:14:04,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 02:14:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307951831] [2022-11-03 02:14:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:04,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:14:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:14:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:14:04,330 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:04,786 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2022-11-03 02:14:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:14:04,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:14:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:04,787 INFO L225 Difference]: With dead ends: 68 [2022-11-03 02:14:04,787 INFO L226 Difference]: Without dead ends: 55 [2022-11-03 02:14:04,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:14:04,788 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:04,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:14:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-03 02:14:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2022-11-03 02:14:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-11-03 02:14:04,800 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 18 [2022-11-03 02:14:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:04,801 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-11-03 02:14:04,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-11-03 02:14:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:14:04,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:04,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:04,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:05,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:05,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:05,206 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:05,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1413183039, now seen corresponding path program 2 times [2022-11-03 02:14:05,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:05,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504906926] [2022-11-03 02:14:05,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:14:05,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:05,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:05,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:05,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:14:05,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:14:05,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:14:05,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:14:05,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:05,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:14:05,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:14:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:05,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 02:14:05,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 02:14:05,613 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:14:05,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-03 02:14:05,637 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 02:14:05,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2022-11-03 02:14:05,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 02:14:05,664 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:14:05,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2022-11-03 02:14:05,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 02:14:05,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-03 02:14:05,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:14:05,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 02:14:05,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:14:05,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 25 [2022-11-03 02:14:05,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:14:05,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:05,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:06,007 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_357) |c_ULTIMATE.start_main_~prev~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~prev~0#1.offset|)))) is different from false [2022-11-03 02:14:06,019 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_352 (_ BitVec 32))) (= (_ bv1 32) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_352)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_357) |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)))) is different from false [2022-11-03 02:14:06,032 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_352 (_ BitVec 32))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_352)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))) (_ bv1 32))) is different from false [2022-11-03 02:14:06,052 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 58 [2022-11-03 02:14:06,105 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 134 treesize of output 113 [2022-11-03 02:14:06,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 46 [2022-11-03 02:14:06,412 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:06,494 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:06,539 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:06,568 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse1 (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (let ((.cse2 (not (= (_ bv0 1) (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)))) (.cse6 (forall ((v_arrayElimCell_50 (_ BitVec 32))) (or (forall ((v_arrayElimCell_49 (_ BitVec 32)) (v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_ArrVal_352 (_ BitVec 32))) (= (select (select (store (let ((.cse10 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) v_arrayElimCell_50 v_ArrVal_351))) (store .cse10 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_352))) v_arrayElimCell_49 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))) (= |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimCell_50) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_50)))))) (.cse7 (forall ((v_arrayElimCell_50 (_ BitVec 32))) (or (forall ((v_arrayElimCell_49 (_ BitVec 32)) (v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_arrayElimCell_51 (_ BitVec 32)) (v_ArrVal_352 (_ BitVec 32))) (let ((.cse8 (let ((.cse9 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) v_arrayElimCell_50 v_ArrVal_351))) (store .cse9 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_352))))) (or (= (select (select (store .cse8 v_arrayElimCell_51 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32)) (= (select (select (store .cse8 v_arrayElimCell_49 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))))) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_50))))))) (and (or (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_arrayElimCell_51 (_ BitVec 32)) (v_arrayElimArr_12 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_12) v_arrayElimCell_51 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1))) .cse2) (forall ((v_arrayElimCell_50 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimCell_50) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_50))) (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_ArrVal_352 (_ BitVec 32))) (= (select (select (store (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) v_arrayElimCell_50 v_ArrVal_351))) (store .cse3 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_352))) v_arrayElimCell_50 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))))) (forall ((v_arrayElimCell_50 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_50))) (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_arrayElimCell_51 (_ BitVec 32)) (v_ArrVal_352 (_ BitVec 32))) (let ((.cse4 (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) v_arrayElimCell_50 v_ArrVal_351))) (store .cse5 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_352))))) (or (= (select (select (store .cse4 v_arrayElimCell_50 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32)) (= (select (select (store .cse4 v_arrayElimCell_51 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))))))) (or (and .cse6 .cse7 (or .cse2 (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_arrayElimCell_51 (_ BitVec 32)) (v_arrayElimArr_11 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_11) v_arrayElimCell_51 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))))) (= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.offset|)) (or (and (or .cse2 (forall ((v_ArrVal_357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_347 (_ BitVec 32)) (v_arrayElimCell_51 (_ BitVec 32)) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_10) v_arrayElimCell_51 v_ArrVal_357) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1)))) .cse6 .cse7) (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~x~0#1.base|))))) is different from false [2022-11-03 02:14:06,716 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:06,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:06,740 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-03 02:14:06,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2022-11-03 02:14:06,776 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:06,798 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 129 treesize of output 122 [2022-11-03 02:14:06,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 107 treesize of output 91 [2022-11-03 02:14:06,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 49 treesize of output 41 [2022-11-03 02:14:06,923 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:06,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:06,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 43 [2022-11-03 02:14:06,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:14:06,981 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:06,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:06,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:06,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2022-11-03 02:14:06,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:07,041 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:07,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:07,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:07,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:07,057 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:07,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 43 [2022-11-03 02:14:07,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:14:07,105 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:07,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:07,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:07,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:07,119 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:07,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 02:14:07,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-03 02:14:07,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:07,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504906926] [2022-11-03 02:14:07,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504906926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:07,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1228978697] [2022-11-03 02:14:07,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:14:07,515 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:14:07,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:14:07,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:14:07,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 02:14:07,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:14:07,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:14:07,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:14:07,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:07,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:14:07,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:14:08,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:08,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 02:14:08,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 02:14:08,045 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:14:08,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-03 02:14:08,067 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 02:14:08,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2022-11-03 02:14:08,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 02:14:08,091 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:14:08,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2022-11-03 02:14:08,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 02:14:08,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-03 02:14:08,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-11-03 02:14:08,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:14:08,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:14:08,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 02:14:08,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 25 [2022-11-03 02:14:08,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:14:08,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:08,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:08,255 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_427) |c_ULTIMATE.start_main_~prev~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~prev~0#1.offset|)) (_ bv1 32))) is different from false [2022-11-03 02:14:08,269 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 (_ BitVec 32)) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_423)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_427) |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)))) is different from false [2022-11-03 02:14:08,281 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_423 (_ BitVec 32)) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_423)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))) (_ bv1 32))) is different from false [2022-11-03 02:14:08,298 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:08,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 58 [2022-11-03 02:14:08,342 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:08,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 134 treesize of output 113 [2022-11-03 02:14:08,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 46 [2022-11-03 02:14:08,585 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:08,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:08,693 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:08,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:08,774 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:08,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:08,904 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse3 (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (let ((.cse0 (forall ((v_arrayElimCell_84 (_ BitVec 32))) (or (not (= (select |c_#valid| v_arrayElimCell_84) (_ bv0 1))) (= |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimCell_84) (forall ((v_ArrVal_417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_423 (_ BitVec 32)) (v_arrayElimCell_83 (_ BitVec 32)) (v_ArrVal_421 (_ BitVec 32)) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (let ((.cse10 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) v_arrayElimCell_84 v_ArrVal_417))) (store .cse10 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_423))) v_arrayElimCell_83 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32)))))) (.cse1 (not (= (_ bv0 1) (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)))) (.cse4 (forall ((v_arrayElimCell_84 (_ BitVec 32))) (or (forall ((v_arrayElimCell_83 (_ BitVec 32)) (v_ArrVal_417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_423 (_ BitVec 32)) (v_ArrVal_421 (_ BitVec 32)) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (let ((.cse9 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) v_arrayElimCell_84 v_ArrVal_417))) (store .cse9 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_423))))) (or (= (select (select (store .cse8 v_arrayElimCell_83 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32)) (forall ((v_arrayElimCell_85 (_ BitVec 32))) (= (_ bv1 32) (select (select (store .cse8 v_arrayElimCell_85 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3)))))) (not (= (select |c_#valid| v_arrayElimCell_84) (_ bv0 1))))))) (and (or (and .cse0 (or .cse1 (forall ((v_ArrVal_421 (_ BitVec 32)) (v_arrayElimCell_85 (_ BitVec 32)) (v_arrayElimArr_24 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_24) v_arrayElimCell_85 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32)))) .cse4) (= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.offset|)) (or (forall ((v_ArrVal_421 (_ BitVec 32)) (v_arrayElimCell_85 (_ BitVec 32)) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_22) v_arrayElimCell_85 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32))) .cse1) (or (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) (and .cse0 (or (forall ((v_ArrVal_421 (_ BitVec 32)) (v_arrayElimCell_85 (_ BitVec 32)) (v_arrayElimArr_23 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_23) v_arrayElimCell_85 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32))) .cse1) .cse4)) (forall ((v_arrayElimCell_84 (_ BitVec 32))) (or (not (= (select |c_#valid| v_arrayElimCell_84) (_ bv0 1))) (= |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimCell_84) (forall ((v_ArrVal_417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_423 (_ BitVec 32)) (v_ArrVal_421 (_ BitVec 32)) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) v_arrayElimCell_84 v_ArrVal_417))) (store .cse5 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_423))) v_arrayElimCell_84 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32))))) (forall ((v_arrayElimCell_84 (_ BitVec 32))) (or (not (= (select |c_#valid| v_arrayElimCell_84) (_ bv0 1))) (forall ((v_ArrVal_417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_423 (_ BitVec 32)) (v_ArrVal_421 (_ BitVec 32)) (v_ArrVal_427 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_421)) v_arrayElimCell_84 v_ArrVal_417))) (store .cse7 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_423))))) (or (forall ((v_arrayElimCell_85 (_ BitVec 32))) (= (_ bv1 32) (select (select (store .cse6 v_arrayElimCell_85 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3))) (= (select (select (store .cse6 v_arrayElimCell_84 v_ArrVal_427) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3) (_ bv1 32)))))))))) is different from false [2022-11-03 02:14:09,039 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-03 02:14:09,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-03 02:14:09,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:09,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-03 02:14:09,080 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:09,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2022-11-03 02:14:09,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:09,132 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:09,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 43 [2022-11-03 02:14:09,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:14:09,178 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-03 02:14:09,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 28 [2022-11-03 02:14:09,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-03 02:14:09,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:09,217 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:09,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,241 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-03 02:14:09,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2022-11-03 02:14:09,291 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:09,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,307 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 02:14:09,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:09,352 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:09,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,370 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 43 [2022-11-03 02:14:09,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:14:09,435 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:09,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:09,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:09,477 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-03 02:14:09,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 34 [2022-11-03 02:14:09,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 02:14:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-03 02:14:09,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1228978697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:09,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436450150] [2022-11-03 02:14:09,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:14:09,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:09,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:09,767 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:09,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:14:10,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:14:10,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:14:10,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:14:10,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:10,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:14:10,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:14:10,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:10,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 02:14:10,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 02:14:10,549 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:14:10,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-03 02:14:10,584 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 02:14:10,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2022-11-03 02:14:10,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 02:14:10,609 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:14:10,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2022-11-03 02:14:10,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 02:14:10,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 02:14:10,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:14:10,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:14:10,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 02:14:10,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 25 [2022-11-03 02:14:10,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:14:10,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:10,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:10,747 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_493) |c_ULTIMATE.start_main_~prev~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~prev~0#1.offset|)) (_ bv1 32))) is different from false [2022-11-03 02:14:10,759 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_491 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_491)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_493) |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)))) is different from false [2022-11-03 02:14:10,773 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_491 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_491)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))) (_ bv1 32))) is different from false [2022-11-03 02:14:10,796 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:10,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 58 [2022-11-03 02:14:10,861 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:10,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 134 treesize of output 113 [2022-11-03 02:14:10,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 46 [2022-11-03 02:14:11,179 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:11,275 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:11,294 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 02:14:11,318 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse1 (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (let ((.cse2 (not (= (_ bv0 1) (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)))) (.cse3 (forall ((v_arrayElimCell_122 (_ BitVec 32))) (or (not (= (select |c_#valid| v_arrayElimCell_122) (_ bv0 1))) (forall ((v_ArrVal_491 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32)) (v_arrayElimCell_121 (_ BitVec 32))) (= (select (select (store (let ((.cse10 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) v_arrayElimCell_122 v_ArrVal_485))) (store .cse10 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_491))) v_arrayElimCell_121 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))) (= |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimCell_122)))) (.cse4 (forall ((v_arrayElimCell_122 (_ BitVec 32))) (or (forall ((v_ArrVal_491 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32)) (v_arrayElimCell_121 (_ BitVec 32))) (let ((.cse8 (let ((.cse9 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) v_arrayElimCell_122 v_ArrVal_485))) (store .cse9 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_491))))) (or (forall ((v_arrayElimCell_123 (_ BitVec 32))) (= (select (select (store .cse8 v_arrayElimCell_123 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))) (= (select (select (store .cse8 v_arrayElimCell_121 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))))) (not (= (select |c_#valid| v_arrayElimCell_122) (_ bv0 1))))))) (and (or (and (or (forall ((v_arrayElimCell_123 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_36 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_36) v_arrayElimCell_123 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))) .cse2) .cse3 .cse4) (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (or (forall ((v_arrayElimCell_123 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_38 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_38) v_arrayElimCell_123 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))) .cse2) (forall ((v_arrayElimCell_122 (_ BitVec 32))) (or (forall ((v_ArrVal_491 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32))) (let ((.cse5 (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) v_arrayElimCell_122 v_ArrVal_485))) (store .cse6 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_491))))) (or (= (select (select (store .cse5 v_arrayElimCell_122 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32)) (forall ((v_arrayElimCell_123 (_ BitVec 32))) (= (select (select (store .cse5 v_arrayElimCell_123 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32)))))) (not (= (select |c_#valid| v_arrayElimCell_122) (_ bv0 1))))) (or (and (or .cse2 (forall ((v_arrayElimCell_123 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimArr_37) v_arrayElimCell_123 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32)))) .cse3 .cse4) (= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_arrayElimCell_122 (_ BitVec 32))) (or (forall ((v_ArrVal_491 (_ BitVec 32)) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_486 (_ BitVec 32))) (= (select (select (store (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_486)) v_arrayElimCell_122 v_ArrVal_485))) (store .cse7 |c_ULTIMATE.start_main_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_491))) v_arrayElimCell_122 v_ArrVal_493) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) (_ bv1 32))) (not (= (select |c_#valid| v_arrayElimCell_122) (_ bv0 1))) (= |c_ULTIMATE.start_main_~head~0#1.base| v_arrayElimCell_122)))))) is different from false [2022-11-03 02:14:11,432 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-03 02:14:11,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 28 [2022-11-03 02:14:11,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-03 02:14:11,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:11,471 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:11,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,484 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 02:14:11,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:11,530 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:11,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,545 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 43 [2022-11-03 02:14:11,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:14:11,592 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:11,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2022-11-03 02:14:11,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:11,644 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:11,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 43 [2022-11-03 02:14:11,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:14:11,689 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-03 02:14:11,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,710 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-03 02:14:11,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2022-11-03 02:14:11,749 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:11,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 71 [2022-11-03 02:14:11,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:14:11,777 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-03 02:14:11,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 34 [2022-11-03 02:14:11,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-11-03 02:14:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-03 02:14:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436450150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:12,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:14:12,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 27 [2022-11-03 02:14:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510786260] [2022-11-03 02:14:12,063 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:14:12,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:14:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:14:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=184, Unknown=12, NotChecked=444, Total=702 [2022-11-03 02:14:12,065 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:13,974 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2022-11-03 02:14:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:14:13,976 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 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) Word has length 19 [2022-11-03 02:14:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:13,977 INFO L225 Difference]: With dead ends: 80 [2022-11-03 02:14:13,977 INFO L226 Difference]: Without dead ends: 78 [2022-11-03 02:14:13,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 31 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=354, Unknown=12, NotChecked=588, Total=1056 [2022-11-03 02:14:13,978 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 66 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 892 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:13,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 229 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 278 Invalid, 0 Unknown, 892 Unchecked, 1.4s Time] [2022-11-03 02:14:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-03 02:14:13,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2022-11-03 02:14:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2022-11-03 02:14:13,992 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 19 [2022-11-03 02:14:13,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:13,992 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2022-11-03 02:14:13,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2022-11-03 02:14:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:14:13,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:13,994 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:14,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:14,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:14:14,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-03 02:14:14,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:14,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1413184961, now seen corresponding path program 1 times [2022-11-03 02:14:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:14,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544896887] [2022-11-03 02:14:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:14,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:14,605 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:14,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:14:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:14,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:14:14,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:14:14,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:14:14,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:14:14,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544896887] [2022-11-03 02:14:14,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544896887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:14,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:14,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259467226] [2022-11-03 02:14:14,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:14,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:14,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:14:14,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:14,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:14,755 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:14,790 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-03 02:14:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:14:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:14,791 INFO L225 Difference]: With dead ends: 58 [2022-11-03 02:14:14,792 INFO L226 Difference]: Without dead ends: 56 [2022-11-03 02:14:14,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:14,793 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:14,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 62 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:14:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-03 02:14:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2022-11-03 02:14:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2022-11-03 02:14:14,805 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 19 [2022-11-03 02:14:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:14,805 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2022-11-03 02:14:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:14:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2022-11-03 02:14:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:14:14,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:14,807 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:14,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-03 02:14:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:14:15,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1841142266, now seen corresponding path program 3 times [2022-11-03 02:14:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:14:15,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712170718] [2022-11-03 02:14:15,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:14:15,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:14:15,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:14:15,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:14:15,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bcbb74-89af-472e-b645-1ca3dfa51f67/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:14:15,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:14:15,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:14:15,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:14:15,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:15,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 02:14:15,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:15,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:15,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-03 02:14:15,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:15,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 22 [2022-11-03 02:14:15,401 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:14:15,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2022-11-03 02:14:15,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-11-03 02:14:15,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 23 [2022-11-03 02:14:15,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:14:15,522 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 02:14:15,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2022-11-03 02:14:15,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-03 02:14:15,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 18 [2022-11-03 02:14:15,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 02:14:15,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:15,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:14:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:15,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:15,650 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_623) .cse0) .cse1) (_ bv0 32))) (forall ((v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_624) .cse0) .cse1) (_ bv0 32))))) is different from false [2022-11-03 02:14:15,665 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (forall ((v_ArrVal_623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_623) .cse0) .cse1) (_ bv0 32))) (forall ((v_ArrVal_624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_624) .cse0) .cse1) (_ bv0 32))))) is different from false [2022-11-03 02:14:16,361 INFO L356 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2022-11-03 02:14:16,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 363 treesize of output 338 [2022-11-03 02:14:17,343 INFO L356 Elim1Store]: treesize reduction 111, result has 41.9 percent of original size [2022-11-03 02:14:17,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 7565 treesize of output 5853 [2022-11-03 02:14:17,483 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:17,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 6029 treesize of output 5466 [2022-11-03 02:14:18,122 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:18,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 18738 treesize of output 17642 [2022-11-03 02:14:18,772 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:18,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 17492 treesize of output 16494 [2022-11-03 02:14:19,345 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:19,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16405 treesize of output 14978 [2022-11-03 02:14:19,707 INFO L244 Elim1Store]: Index analysis took 110 ms [2022-11-03 02:14:27,118 WARN L234 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 426 DAG size of output: 257 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:14:27,123 INFO L356 Elim1Store]: treesize reduction 924, result has 45.1 percent of original size [2022-11-03 02:14:27,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 1 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 119 case distinctions, treesize of input 17500 treesize of output 15029 [2022-11-03 02:14:28,069 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:14:28,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14165 treesize of output 13570