./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:52:00,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:52:00,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:52:00,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:52:00,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:52:00,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:52:00,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:52:00,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:52:00,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:52:00,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:52:00,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:52:00,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:52:00,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:52:00,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:52:00,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:52:00,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:52:00,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:52:00,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:52:00,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:52:00,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:52:00,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:52:00,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:52:00,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:52:00,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:52:00,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:52:00,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:52:00,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:52:00,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:52:00,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:52:00,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:52:00,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:52:00,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:52:00,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:52:00,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:52:00,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:52:00,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:52:00,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:52:00,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:52:00,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:52:00,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:52:00,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:52:00,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:52:00,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:52:00,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:52:00,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:52:00,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:52:00,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:52:00,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:52:00,742 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:52:00,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:52:00,743 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:52:00,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:52:00,743 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:52:00,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:52:00,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:52:00,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:52:00,744 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:52:00,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:52:00,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:52:00,745 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:52:00,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:52:00,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:52:00,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:52:00,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:52:00,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:52:00,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:52:00,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:52:00,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:52:00,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:52:00,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:52:00,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:52:00,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:52:00,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:52:00,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:52:00,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:52:00,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:52:00,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:52:00,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:52:00,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:52:00,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:52:00,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:52:00,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:52:00,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:52:00,750 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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-21 00:52:01,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:52:01,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:52:01,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:52:01,067 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:52:01,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:52:01,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-21 00:52:01,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/data/0385a4e9e/0a983d6d945c44f3b8a13fb3d4358f1c/FLAGa97f345cf [2021-11-21 00:52:01,740 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:52:01,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-21 00:52:01,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/data/0385a4e9e/0a983d6d945c44f3b8a13fb3d4358f1c/FLAGa97f345cf [2021-11-21 00:52:01,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/data/0385a4e9e/0a983d6d945c44f3b8a13fb3d4358f1c [2021-11-21 00:52:01,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:52:01,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:52:01,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:52:01,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:52:01,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:52:01,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:52:01" (1/1) ... [2021-11-21 00:52:01,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8639df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:01, skipping insertion in model container [2021-11-21 00:52:01,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:52:01" (1/1) ... [2021-11-21 00:52:01,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:52:02,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:52:02,443 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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-21 00:52:02,537 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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-21 00:52:02,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:52:02,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:52:02,593 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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-21 00:52:02,665 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_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-21 00:52:02,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:52:02,739 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:52:02,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02 WrapperNode [2021-11-21 00:52:02,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:52:02,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:52:02,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:52:02,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:52:02,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:02,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:02,900 INFO L137 Inliner]: procedures = 177, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1181 [2021-11-21 00:52:02,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:52:02,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:52:02,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:52:02,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:52:02,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:02,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:02,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:02,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:03,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:03,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:03,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:03,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:52:03,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:52:03,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:52:03,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:52:03,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (1/1) ... [2021-11-21 00:52:03,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:52:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:03,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:52:03,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:52:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:52:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:52:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:52:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:52:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:52:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:52:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:52:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:52:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:52:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:52:03,387 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:52:03,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:52:04,596 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:52:05,080 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:52:05,081 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-21 00:52:05,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:52:05 BoogieIcfgContainer [2021-11-21 00:52:05,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:52:05,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:52:05,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:52:05,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:52:05,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:52:01" (1/3) ... [2021-11-21 00:52:05,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29514918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:52:05, skipping insertion in model container [2021-11-21 00:52:05,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:52:02" (2/3) ... [2021-11-21 00:52:05,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29514918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:52:05, skipping insertion in model container [2021-11-21 00:52:05,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:52:05" (3/3) ... [2021-11-21 00:52:05,120 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2021-11-21 00:52:05,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:52:05,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:52:05,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:52:05,207 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 [2021-11-21 00:52:05,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:52:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 131 states have internal predecessors, (223), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:52:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:52:05,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:05,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:05,235 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2145808350, now seen corresponding path program 1 times [2021-11-21 00:52:05,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:05,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414041071] [2021-11-21 00:52:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:05,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:05,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:05,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414041071] [2021-11-21 00:52:05,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414041071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:05,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:05,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:52:05,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839654301] [2021-11-21 00:52:05,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:05,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:52:05,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:05,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:52:05,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:52:05,469 INFO L87 Difference]: Start difference. First operand has 137 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 131 states have internal predecessors, (223), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:06,090 INFO L93 Difference]: Finished difference Result 273 states and 482 transitions. [2021-11-21 00:52:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:52:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:52:06,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:06,108 INFO L225 Difference]: With dead ends: 273 [2021-11-21 00:52:06,108 INFO L226 Difference]: Without dead ends: 122 [2021-11-21 00:52:06,113 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 [2021-11-21 00:52:06,116 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:06,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:52:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-21 00:52:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-21 00:52:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:52:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2021-11-21 00:52:06,175 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2021-11-21 00:52:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:06,176 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2021-11-21 00:52:06,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2021-11-21 00:52:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:52:06,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:06,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:52:06,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:52:06,179 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash 131240621, now seen corresponding path program 1 times [2021-11-21 00:52:06,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:06,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626496874] [2021-11-21 00:52:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:06,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:06,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:06,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626496874] [2021-11-21 00:52:06,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626496874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:06,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:06,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:52:06,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948583823] [2021-11-21 00:52:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:06,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:52:06,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:52:06,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:52:06,297 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:07,991 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2021-11-21 00:52:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:52:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:52:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:08,002 INFO L225 Difference]: With dead ends: 258 [2021-11-21 00:52:08,003 INFO L226 Difference]: Without dead ends: 189 [2021-11-21 00:52:08,004 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 [2021-11-21 00:52:08,005 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:08,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 359 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 00:52:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-21 00:52:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2021-11-21 00:52:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:52:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2021-11-21 00:52:08,026 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2021-11-21 00:52:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:08,026 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2021-11-21 00:52:08,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2021-11-21 00:52:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 00:52:08,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:08,029 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, 1, 1, 1, 1] [2021-11-21 00:52:08,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:52:08,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:08,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash 993801336, now seen corresponding path program 1 times [2021-11-21 00:52:08,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:08,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607512699] [2021-11-21 00:52:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:08,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:08,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:52:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107556047] [2021-11-21 00:52:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:08,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:08,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:08,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:52:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:08,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:52:08,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:52:08,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:52:08,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:08,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607512699] [2021-11-21 00:52:08,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:52:08,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107556047] [2021-11-21 00:52:08,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107556047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:08,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:52:08,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606638990] [2021-11-21 00:52:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:08,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:52:08,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:08,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:52:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:08,656 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:09,542 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2021-11-21 00:52:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:52:09,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-21 00:52:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:09,553 INFO L225 Difference]: With dead ends: 304 [2021-11-21 00:52:09,553 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 00:52:09,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:52:09,556 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:09,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 280 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:52:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 00:52:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2021-11-21 00:52:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:52:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2021-11-21 00:52:09,588 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2021-11-21 00:52:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:09,588 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2021-11-21 00:52:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:52:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2021-11-21 00:52:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 00:52:09,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:09,592 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] [2021-11-21 00:52:09,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:09,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-21 00:52:09,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 237821332, now seen corresponding path program 1 times [2021-11-21 00:52:09,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:09,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422857832] [2021-11-21 00:52:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:09,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:09,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:52:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340393133] [2021-11-21 00:52:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:09,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:09,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:09,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:09,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:52:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:10,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:52:10,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:10,421 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 [2021-11-21 00:52:10,460 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 [2021-11-21 00:52:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:52:10,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:52:10,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422857832] [2021-11-21 00:52:10,497 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:52:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340393133] [2021-11-21 00:52:10,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340393133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:10,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:10,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:52:10,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073516331] [2021-11-21 00:52:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:10,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:52:10,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:10,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:52:10,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:52:10,504 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:52:13,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:52:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:13,274 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2021-11-21 00:52:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:52:13,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-11-21 00:52:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:13,296 INFO L225 Difference]: With dead ends: 231 [2021-11-21 00:52:13,296 INFO L226 Difference]: Without dead ends: 212 [2021-11-21 00:52:13,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:52:13,298 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 58 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:13,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 354 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:52:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-21 00:52:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2021-11-21 00:52:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:52:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2021-11-21 00:52:13,316 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2021-11-21 00:52:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:13,317 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2021-11-21 00:52:13,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:52:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2021-11-21 00:52:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 00:52:13,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:13,320 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] [2021-11-21 00:52:13,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:13,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:13,533 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 375836451, now seen corresponding path program 1 times [2021-11-21 00:52:13,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:13,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324521294] [2021-11-21 00:52:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:13,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:13,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:52:13,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804484401] [2021-11-21 00:52:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:13,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:13,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:13,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:52:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:13,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:52:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:52:13,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:52:13,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:13,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324521294] [2021-11-21 00:52:13,981 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:52:13,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804484401] [2021-11-21 00:52:13,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804484401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:13,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:13,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:52:13,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527224431] [2021-11-21 00:52:13,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:13,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:52:13,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:13,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:52:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:52:13,983 INFO L87 Difference]: Start difference. First operand 169 states and 203 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) [2021-11-21 00:52:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:14,947 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2021-11-21 00:52:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:52:14,948 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 [2021-11-21 00:52:14,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:14,950 INFO L225 Difference]: With dead ends: 395 [2021-11-21 00:52:14,950 INFO L226 Difference]: Without dead ends: 242 [2021-11-21 00:52:14,953 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 [2021-11-21 00:52:14,956 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 257 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:14,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:52:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-21 00:52:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2021-11-21 00:52:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 00:52:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2021-11-21 00:52:14,987 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2021-11-21 00:52:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:14,988 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2021-11-21 00:52:14,988 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) [2021-11-21 00:52:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2021-11-21 00:52:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:52:14,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:14,991 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] [2021-11-21 00:52:15,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:15,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:15,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1459918940, now seen corresponding path program 1 times [2021-11-21 00:52:15,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:15,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739496271] [2021-11-21 00:52:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:15,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:15,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:52:15,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067361363] [2021-11-21 00:52:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:15,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:15,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:15,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:52:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:15,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:52:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:52:16,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:52:16,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739496271] [2021-11-21 00:52:16,045 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:52:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067361363] [2021-11-21 00:52:16,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067361363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:52:16,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:52:16,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:52:16,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449345486] [2021-11-21 00:52:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:52:16,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:52:16,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:52:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:52:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:52:16,048 INFO L87 Difference]: Start difference. First operand 214 states and 257 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) [2021-11-21 00:52:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:52:18,001 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2021-11-21 00:52:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:52:18,008 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 [2021-11-21 00:52:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:52:18,010 INFO L225 Difference]: With dead ends: 411 [2021-11-21 00:52:18,011 INFO L226 Difference]: Without dead ends: 216 [2021-11-21 00:52:18,012 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 [2021-11-21 00:52:18,013 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:52:18,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 00:52:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-21 00:52:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-21 00:52:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-21 00:52:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2021-11-21 00:52:18,036 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2021-11-21 00:52:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:52:18,037 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2021-11-21 00:52:18,037 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) [2021-11-21 00:52:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2021-11-21 00:52:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:52:18,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:52:18,041 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] [2021-11-21 00:52:18,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:52:18,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:18,273 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:52:18,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:52:18,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1243076896, now seen corresponding path program 1 times [2021-11-21 00:52:18,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:52:18,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827787388] [2021-11-21 00:52:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:18,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:52:18,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:52:18,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000245695] [2021-11-21 00:52:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:52:18,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:52:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:52:18,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:52:18,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9ebb11-dcb7-4f90-aa7d-b240707af4c5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:52:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:52:25,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:52:25,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:52:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:52:25,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:52:26,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:52:26,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827787388] [2021-11-21 00:52:26,133 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:52:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000245695] [2021-11-21 00:52:26,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000245695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:52:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [138091205] [2021-11-21 00:52:26,155 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-21 00:52:26,156 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:52:26,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:52:26,166 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:52:26,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:52:26,284 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 [2021-11-21 00:52:26,298 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 15 treesize of output 1 [2021-11-21 00:52:26,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 00:52:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,333 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:52:26,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:52:26,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,372 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:52:26,372 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 [2021-11-21 00:52:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,524 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 [2021-11-21 00:52:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,566 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-21 00:52:26,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 00:52:26,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,627 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:52:26,628 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 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-21 00:52:26,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,703 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 00:52:26,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 00:52:26,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:26,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 00:52:28,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,096 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 [2021-11-21 00:52:28,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,127 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 [2021-11-21 00:52:28,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,181 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 [2021-11-21 00:52:28,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,227 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 [2021-11-21 00:52:28,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,371 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 [2021-11-21 00:52:28,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,415 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 [2021-11-21 00:52:28,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,466 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 [2021-11-21 00:52:28,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,494 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 89 treesize of output 79 [2021-11-21 00:52:28,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,654 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:52:28,654 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 89 treesize of output 79 [2021-11-21 00:52:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,714 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 [2021-11-21 00:52:28,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,750 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 [2021-11-21 00:52:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,857 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-21 00:52:28,857 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 127 treesize of output 163 [2021-11-21 00:52:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:28,919 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-21 00:52:28,919 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 145 treesize of output 156 [2021-11-21 00:52:29,548 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 [2021-11-21 00:52:29,556 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 [2021-11-21 00:52:29,564 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 [2021-11-21 00:52:29,620 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-21 00:52:29,621 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 [2021-11-21 00:52:29,644 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 00:52:29,645 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 [2021-11-21 00:52:29,672 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 00:52:29,672 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 [2021-11-21 00:52:29,767 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 [2021-11-21 00:52:29,774 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 [2021-11-21 00:52:29,782 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 [2021-11-21 00:52:29,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,878 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 [2021-11-21 00:52:29,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,922 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 [2021-11-21 00:52:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:29,972 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 [2021-11-21 00:52:30,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,265 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 [2021-11-21 00:52:30,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,331 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 [2021-11-21 00:52:30,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:30,385 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 [2021-11-21 00:52:37,748 WARN L227 SmtUtils]: Spent 7.27s 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) [2021-11-21 00:52:37,749 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 00:52:37,750 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 [2021-11-21 00:52:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:46,612 WARN L227 SmtUtils]: Spent 8.82s 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) [2021-11-21 00:52:46,613 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 00:52:46,614 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 [2021-11-21 00:52:59,021 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:52:59,022 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 00:52:59,023 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 2852 treesize of output 2682 [2021-11-21 00:52:59,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:59,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:52:59,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:00,864 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 00:53:00,865 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 25950 treesize of output 25981 [2021-11-21 00:53:01,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:01,820 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 00:53:01,821 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 25960 treesize of output 25974 [2021-11-21 00:53:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:04,087 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 00:53:04,087 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 36 treesize of output 20 [2021-11-21 00:53:05,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:05,345 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-21 00:53:05,345 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 46 treesize of output 44 [2021-11-21 00:53:06,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:06,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:07,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:07,305 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:07,819 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:08,018 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:08,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:08,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:10,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:10,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:11,033 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:11,256 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:11,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:11,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:12,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:12,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:13,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:53:13,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:13,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:53:13,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:13,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:53:13,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:53:13,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:13,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:13,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1252 treesize of output 798 [2021-11-21 00:53:14,582 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:15,779 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:16,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:16,753 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:17,099 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:17,877 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:18,180 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:20,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:20,608 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:20,795 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:20,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:21,236 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:21,533 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:21,782 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:22,009 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:22,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:30,719 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-21 00:53:30,720 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 4286 treesize of output 4294 [2021-11-21 00:53:31,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:31,746 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 00:53:31,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:31,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2021-11-21 00:53:32,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:53:33,077 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-21 00:53:33,077 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 38 treesize of output 32 [2021-11-21 00:53:33,486 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:53:44,224 INFO L190 IndexEqualityManager]: detected not equals via solver