./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P --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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:15:23,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:15:23,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:15:23,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:15:23,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:15:23,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:15:23,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:15:23,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:15:23,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:15:23,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:15:23,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:15:23,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:15:23,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:15:23,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:15:23,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:15:24,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:15:24,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:15:24,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:15:24,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:15:24,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:15:24,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:15:24,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:15:24,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:15:24,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:15:24,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:15:24,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:15:24,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:15:24,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:15:24,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:15:24,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:15:24,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:15:24,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:15:24,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:15:24,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:15:24,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:15:24,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:15:24,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:15:24,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:15:24,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:15:24,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:15:24,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:15:24,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:15:24,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:15:24,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:15:24,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:15:24,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:15:24,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:15:24,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:15:24,113 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:15:24,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:15:24,114 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:15:24,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:15:24,116 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:15:24,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:15:24,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:15:24,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:15:24,117 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:15:24,117 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:15:24,117 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:15:24,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:15:24,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:15:24,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:15:24,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:15:24,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:15:24,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:15:24,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:15:24,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:15:24,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:15:24,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:15:24,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:15:24,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:15:24,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:15:24,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:15:24,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:15:24,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:24,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:15:24,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:15:24,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:15:24,125 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:15:24,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:15:24,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:15:24,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:15:24,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:15:24,127 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-11-20 23:15:24,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:15:24,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:15:24,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:15:24,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:15:24,538 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:15:24,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-20 23:15:24,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/data/20b355999/b4f832c046604633a452e7fc798a4da7/FLAG89d36a08e [2021-11-20 23:15:25,362 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:15:25,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-20 23:15:25,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/data/20b355999/b4f832c046604633a452e7fc798a4da7/FLAG89d36a08e [2021-11-20 23:15:25,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/data/20b355999/b4f832c046604633a452e7fc798a4da7 [2021-11-20 23:15:25,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:15:25,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:15:25,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:25,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:15:25,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:15:25,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:25" (1/1) ... [2021-11-20 23:15:25,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d68818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:25, skipping insertion in model container [2021-11-20 23:15:25,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:25" (1/1) ... [2021-11-20 23:15:25,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:15:25,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:15:26,141 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_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-20 23:15:26,337 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_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-20 23:15:26,338 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_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-20 23:15:26,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:26,380 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:15:26,432 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_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-20 23:15:26,527 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_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-20 23:15:26,529 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_a86650f1-782a-4804-ae02-215de8413fd5/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-20 23:15:26,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:26,600 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:15:26,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26 WrapperNode [2021-11-20 23:15:26,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:26,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:26,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:15:26,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:15:26,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,781 INFO L137 Inliner]: procedures = 176, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-20 23:15:26,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:26,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:15:26,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:15:26,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:15:26,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:26,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:27,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:15:27,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:15:27,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:15:27,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:15:27,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (1/1) ... [2021-11-20 23:15:27,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:27,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:27,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:15:27,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:15:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:15:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:15:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:15:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:15:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:15:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:15:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:15:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:15:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:15:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:15:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:15:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:15:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:15:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:15:27,423 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:15:27,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:15:28,811 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:15:29,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:15:29,210 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-20 23:15:29,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:29 BoogieIcfgContainer [2021-11-20 23:15:29,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:15:29,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:15:29,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:15:29,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:15:29,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:15:25" (1/3) ... [2021-11-20 23:15:29,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c695c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:29, skipping insertion in model container [2021-11-20 23:15:29,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:26" (2/3) ... [2021-11-20 23:15:29,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c695c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:29, skipping insertion in model container [2021-11-20 23:15:29,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:29" (3/3) ... [2021-11-20 23:15:29,224 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2021-11-20 23:15:29,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:15:29,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:15:29,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:15:29,366 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:15:29,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:15:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 115 states have (on average 1.808695652173913) internal successors, (208), 117 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:15:29,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:29,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:29,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2062520436, now seen corresponding path program 1 times [2021-11-20 23:15:29,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:29,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989875657] [2021-11-20 23:15:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:29,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:29,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:29,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989875657] [2021-11-20 23:15:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989875657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:29,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:15:29,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15578303] [2021-11-20 23:15:29,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:29,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:15:29,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:29,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:15:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:15:29,710 INFO L87 Difference]: Start difference. First operand has 122 states, 115 states have (on average 1.808695652173913) internal successors, (208), 117 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2021-11-20 23:15:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:30,695 INFO L93 Difference]: Finished difference Result 243 states and 427 transitions. [2021-11-20 23:15:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:15:30,712 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 [2021-11-20 23:15:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:30,722 INFO L225 Difference]: With dead ends: 243 [2021-11-20 23:15:30,722 INFO L226 Difference]: Without dead ends: 107 [2021-11-20 23:15:30,726 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:15:30,730 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:30,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:15:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-20 23:15:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-20 23:15:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2021-11-20 23:15:30,779 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 7 [2021-11-20 23:15:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:30,780 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2021-11-20 23:15:30,780 INFO L471 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) [2021-11-20 23:15:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2021-11-20 23:15:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:15:30,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:30,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:30,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:15:30,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -75086937, now seen corresponding path program 1 times [2021-11-20 23:15:30,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167073123] [2021-11-20 23:15:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:30,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:30,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:30,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167073123] [2021-11-20 23:15:30,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167073123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:30,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:30,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:15:30,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831792674] [2021-11-20 23:15:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:30,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:15:30,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:15:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:15:30,852 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:32,581 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2021-11-20 23:15:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:15:32,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:15:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:32,591 INFO L225 Difference]: With dead ends: 219 [2021-11-20 23:15:32,592 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 23:15:32,593 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:15:32,595 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 63 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:32,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 285 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:15:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 23:15:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 109. [2021-11-20 23:15:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2021-11-20 23:15:32,612 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 9 [2021-11-20 23:15:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:32,612 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2021-11-20 23:15:32,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2021-11-20 23:15:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 23:15:32,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:32,615 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:32,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:15:32,616 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -135765108, now seen corresponding path program 1 times [2021-11-20 23:15:32,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:32,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415521322] [2021-11-20 23:15:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:32,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:32,640 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:32,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551354861] [2021-11-20 23:15:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:32,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:32,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:32,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:32,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:15:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:32,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:15:32,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:33,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:15:33,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:33,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415521322] [2021-11-20 23:15:33,097 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:33,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551354861] [2021-11-20 23:15:33,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551354861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:33,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:33,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:15:33,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502488437] [2021-11-20 23:15:33,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:33,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:15:33,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:15:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:33,100 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:35,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:35,321 INFO L93 Difference]: Finished difference Result 265 states and 307 transitions. [2021-11-20 23:15:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:15:35,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-20 23:15:35,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:35,340 INFO L225 Difference]: With dead ends: 265 [2021-11-20 23:15:35,341 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 23:15:35,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:35,343 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 48 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:35,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 208 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:15:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 23:15:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-11-20 23:15:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 147 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2021-11-20 23:15:35,366 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 33 [2021-11-20 23:15:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:35,367 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2021-11-20 23:15:35,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2021-11-20 23:15:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 23:15:35,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:35,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:35,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:15:35,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:35,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2033909546, now seen corresponding path program 1 times [2021-11-20 23:15:35,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:35,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252704310] [2021-11-20 23:15:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:35,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:35,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316089460] [2021-11-20 23:15:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:35,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:35,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:35,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:35,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:15:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:35,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:15:35,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:36,009 INFO L388 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 [2021-11-20 23:15:36,043 INFO L388 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 [2021-11-20 23:15:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:15:36,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:15:36,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:36,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252704310] [2021-11-20 23:15:36,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:36,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316089460] [2021-11-20 23:15:36,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316089460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:36,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:36,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:15:36,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932814199] [2021-11-20 23:15:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:36,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:15:36,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:15:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:15:36,063 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:37,478 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2021-11-20 23:15:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:15:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2021-11-20 23:15:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:37,494 INFO L225 Difference]: With dead ends: 201 [2021-11-20 23:15:37,495 INFO L226 Difference]: Without dead ends: 197 [2021-11-20 23:15:37,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:37,496 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 58 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:37,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 283 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:15:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-20 23:15:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 154. [2021-11-20 23:15:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.162162162162162) internal successors, (172), 149 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2021-11-20 23:15:37,518 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 46 [2021-11-20 23:15:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:37,519 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2021-11-20 23:15:37,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2021-11-20 23:15:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 23:15:37,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:37,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:37,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:37,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:37,737 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash 340221349, now seen corresponding path program 1 times [2021-11-20 23:15:37,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:37,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922239079] [2021-11-20 23:15:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:37,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:37,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:37,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587645123] [2021-11-20 23:15:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:37,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:37,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:37,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:37,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:15:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:38,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:15:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:15:38,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:15:38,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:38,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922239079] [2021-11-20 23:15:38,203 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:38,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587645123] [2021-11-20 23:15:38,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587645123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:38,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:38,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:15:38,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115706672] [2021-11-20 23:15:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:38,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:15:38,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:15:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:15:38,206 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:38,911 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2021-11-20 23:15:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:15:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-20 23:15:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:38,919 INFO L225 Difference]: With dead ends: 344 [2021-11-20 23:15:38,919 INFO L226 Difference]: Without dead ends: 206 [2021-11-20 23:15:38,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:38,921 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 227 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:38,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 175 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:15:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-20 23:15:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 199. [2021-11-20 23:15:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.1709844559585492) internal successors, (226), 194 states have internal predecessors, (226), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:15:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 232 transitions. [2021-11-20 23:15:38,941 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 232 transitions. Word has length 57 [2021-11-20 23:15:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:38,941 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 232 transitions. [2021-11-20 23:15:38,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 232 transitions. [2021-11-20 23:15:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:15:38,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:38,945 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:38,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:39,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:39,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash -105684312, now seen corresponding path program 1 times [2021-11-20 23:15:39,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:39,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210339094] [2021-11-20 23:15:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:39,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:39,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:39,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836340647] [2021-11-20 23:15:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:39,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:39,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:39,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:39,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:15:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:40,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:15:40,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:15:41,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:15:41,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210339094] [2021-11-20 23:15:41,065 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836340647] [2021-11-20 23:15:41,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836340647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:41,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:41,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:15:41,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485703523] [2021-11-20 23:15:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:41,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:15:41,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:15:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:15:41,068 INFO L87 Difference]: Start difference. First operand 199 states and 232 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:44,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:44,453 INFO L93 Difference]: Finished difference Result 381 states and 448 transitions. [2021-11-20 23:15:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:15:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-20 23:15:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:44,476 INFO L225 Difference]: With dead ends: 381 [2021-11-20 23:15:44,476 INFO L226 Difference]: Without dead ends: 201 [2021-11-20 23:15:44,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:44,478 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:44,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 317 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 23:15:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-20 23:15:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-20 23:15:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 194 states have (on average 1.175257731958763) internal successors, (228), 196 states have internal predecessors, (228), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 23:15:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2021-11-20 23:15:44,495 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 64 [2021-11-20 23:15:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:44,496 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2021-11-20 23:15:44,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:15:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2021-11-20 23:15:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:15:44,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:44,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:44,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:44,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 23:15:44,712 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1390713772, now seen corresponding path program 1 times [2021-11-20 23:15:44,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:44,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274198491] [2021-11-20 23:15:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:44,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:44,733 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756001683] [2021-11-20 23:15:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:44,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:44,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:44,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:44,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86650f1-782a-4804-ae02-215de8413fd5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:16:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:11,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:16:11,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:16:11,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:16:12,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:12,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274198491] [2021-11-20 23:16:12,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:16:12,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756001683] [2021-11-20 23:16:12,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756001683] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [699286548] [2021-11-20 23:16:12,193 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-20 23:16:12,193 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:16:12,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:16:12,203 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:16:12,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:16:12,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:16:12,373 INFO L388 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 15 treesize of output 1 [2021-11-20 23:16:12,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,398 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:16:12,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:16:12,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:16:12,447 INFO L388 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 15 treesize of output 1 [2021-11-20 23:16:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,597 INFO L388 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 [2021-11-20 23:16:12,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,615 INFO L388 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 [2021-11-20 23:16:12,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,669 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-20 23:16:12,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-11-20 23:16:12,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,715 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:16:12,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 30 [2021-11-20 23:16:12,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:12,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2021-11-20 23:16:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-20 23:16:14,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-20 23:16:14,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-20 23:16:14,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-20 23:16:14,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-20 23:16:14,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-20 23:16:14,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-20 23:16:14,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-20 23:16:14,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,802 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:16:14,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 77 [2021-11-20 23:16:14,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-20 23:16:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,966 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-20 23:16:14,966 INFO L388 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 6 case distinctions, treesize of input 127 treesize of output 138 [2021-11-20 23:16:14,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:14,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,095 INFO L354 Elim1Store]: treesize reduction 224, result has 10.4 percent of original size [2021-11-20 23:16:15,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 126 treesize of output 132 [2021-11-20 23:16:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:15,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-20 23:16:15,760 INFO L388 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 14 treesize of output 10 [2021-11-20 23:16:15,770 INFO L388 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 16 treesize of output 12 [2021-11-20 23:16:15,783 INFO L388 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 14 treesize of output 10 [2021-11-20 23:16:15,844 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-20 23:16:15,844 INFO L388 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 98 treesize of output 97 [2021-11-20 23:16:15,869 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:16:15,870 INFO L388 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 94 treesize of output 93 [2021-11-20 23:16:15,898 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:16:15,899 INFO L388 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 90 treesize of output 89 [2021-11-20 23:16:15,962 INFO L388 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 14 treesize of output 10 [2021-11-20 23:16:15,974 INFO L388 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 16 treesize of output 12 [2021-11-20 23:16:15,982 INFO L388 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 14 treesize of output 10 [2021-11-20 23:16:16,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-20 23:16:16,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-20 23:16:16,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-20 23:16:16,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-20 23:16:16,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-20 23:16:16,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:16,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-20 23:16:25,029 WARN L227 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:16:25,030 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-20 23:16:25,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-20 23:16:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:39,934 WARN L227 SmtUtils]: Spent 14.86s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:16:39,935 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-20 23:16:39,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-20 23:16:52,535 WARN L227 SmtUtils]: Spent 12.46s on a formula simplification. DAG size of input: 251 DAG size of output: 142 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:16:52,536 INFO L354 Elim1Store]: treesize reduction 2750, result has 29.6 percent of original size [2021-11-20 23:16:52,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2916 treesize of output 2686 [2021-11-20 23:16:53,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:53,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:53,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:54,110 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-20 23:16:54,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25954 treesize of output 25985 [2021-11-20 23:16:54,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:54,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:54,806 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-20 23:16:54,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25964 treesize of output 25978 [2021-11-20 23:16:57,332 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:16:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:57,636 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 23:16:57,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 32 [2021-11-20 23:16:58,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:58,257 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-11-20 23:16:58,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 46 [2021-11-20 23:16:58,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:58,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:58,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:59,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:59,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:59,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:59,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:59,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:59,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:59,080 INFO L244 Elim1Store]: Index analysis took 131 ms [2021-11-20 23:16:59,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1229 treesize of output 775 [2021-11-20 23:16:59,799 INFO L244 Elim1Store]: Index analysis took 258 ms [2021-11-20 23:16:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:02,029 INFO L354 Elim1Store]: treesize reduction 114, result has 93.8 percent of original size [2021-11-20 23:17:02,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2568 treesize of output 3842 [2021-11-20 23:17:10,108 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-20 23:17:10,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 840 treesize of output 848 [2021-11-20 23:17:10,639 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:17:11,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:11,082 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:17:11,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 42 [2021-11-20 23:17:11,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:11,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:11,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:11,700 INFO L354 Elim1Store]: treesize reduction 20, result has 53.5 percent of original size [2021-11-20 23:17:11,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 67 [2021-11-20 23:17:12,789 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:17:16,659 INFO L190 IndexEqualityManager]: detected not equals via solver