./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/shared_mem2.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_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/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_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/shared_mem2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/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_cd42173d-76df-4497-97ff-b60c90c1d076/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 0f2b1437458922f937e4f63e8c97355790d0c2b77a3c021e76d395c8c90c4257 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:45,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:45,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:45,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:45,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:45,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:45,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:45,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:45,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:45,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:45,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:45,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:45,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:45,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:45,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:45,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:45,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:45,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:45,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:45,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:45,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:45,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:45,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:45,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:45,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:45,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:45,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:45,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:45,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:45,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:45,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:45,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:45,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:45,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:45,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:45,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:45,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:45,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:45,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:45,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:45,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:45,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:12:45,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:45,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:45,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:45,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:45,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:45,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:45,944 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:45,944 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:45,944 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:45,944 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:12:45,944 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:45,945 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:45,945 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:12:45,945 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:12:45,945 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:45,945 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:12:45,946 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:12:45,946 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:12:45,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:45,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:12:45,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:12:45,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:12:45,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:45,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:45,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:45,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:45,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:12:45,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:45,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:45,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:45,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:45,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:45,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:45,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:45,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:45,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:45,955 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:12:45,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:12:45,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:45,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:45,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:45,956 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_cd42173d-76df-4497-97ff-b60c90c1d076/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f2b1437458922f937e4f63e8c97355790d0c2b77a3c021e76d395c8c90c4257 [2021-11-20 23:12:46,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:46,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:46,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:46,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:46,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:46,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/heap-data/shared_mem2.i [2021-11-20 23:12:46,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/5a38d2335/a6e5c4b587be449a97a2b1a02b4f8fc8/FLAGfd1509a3f [2021-11-20 23:12:46,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:46,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/sv-benchmarks/c/heap-data/shared_mem2.i [2021-11-20 23:12:46,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/5a38d2335/a6e5c4b587be449a97a2b1a02b4f8fc8/FLAGfd1509a3f [2021-11-20 23:12:47,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/5a38d2335/a6e5c4b587be449a97a2b1a02b4f8fc8 [2021-11-20 23:12:47,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:47,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:47,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:47,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:47,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:47,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec9f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47, skipping insertion in model container [2021-11-20 23:12:47,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:47,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:12:47,623 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_cd42173d-76df-4497-97ff-b60c90c1d076/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-11-20 23:12:47,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:47,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:12:47,676 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_cd42173d-76df-4497-97ff-b60c90c1d076/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-11-20 23:12:47,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:47,708 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:12:47,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47 WrapperNode [2021-11-20 23:12:47,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:47,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:47,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:12:47,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:12:47,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,761 INFO L137 Inliner]: procedures = 121, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-11-20 23:12:47,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:47,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:12:47,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:12:47,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:12:47,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:12:47,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:12:47,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:12:47,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:12:47,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (1/1) ... [2021-11-20 23:12:47,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:47,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:47,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:12:47,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:12:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:12:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:12:47,965 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:12:47,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:12:48,234 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:12:48,318 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:12:48,318 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:12:48,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:48 BoogieIcfgContainer [2021-11-20 23:12:48,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:12:48,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:12:48,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:12:48,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:12:48,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:47" (1/3) ... [2021-11-20 23:12:48,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9db70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:48, skipping insertion in model container [2021-11-20 23:12:48,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:47" (2/3) ... [2021-11-20 23:12:48,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9db70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:48, skipping insertion in model container [2021-11-20 23:12:48,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:48" (3/3) ... [2021-11-20 23:12:48,333 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2021-11-20 23:12:48,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:12:48,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:12:48,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:12:48,396 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:12:48,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:12:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:12:48,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:48,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:48,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1277433734, now seen corresponding path program 1 times [2021-11-20 23:12:48,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:48,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206015036] [2021-11-20 23:12:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:48,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:48,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:48,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206015036] [2021-11-20 23:12:48,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206015036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:48,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:48,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:12:48,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19450898] [2021-11-20 23:12:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:48,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:12:48,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:12:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:12:48,733 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:48,789 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-20 23:12:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:12:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 23:12:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:48,802 INFO L225 Difference]: With dead ends: 21 [2021-11-20 23:12:48,802 INFO L226 Difference]: Without dead ends: 10 [2021-11-20 23:12:48,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:12:48,810 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:48,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:12:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-20 23:12:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-20 23:12:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-20 23:12:48,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-11-20 23:12:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:48,849 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-20 23:12:48,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-20 23:12:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:12:48,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:48,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:48,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:12:48,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1240778891, now seen corresponding path program 1 times [2021-11-20 23:12:48,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:48,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243967616] [2021-11-20 23:12:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:48,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:48,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:48,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243967616] [2021-11-20 23:12:48,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243967616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:48,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:48,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:12:48,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510298365] [2021-11-20 23:12:48,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:48,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:12:48,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:48,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:12:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:12:48,963 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:49,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:49,048 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-20 23:12:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:12:49,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:12:49,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:49,050 INFO L225 Difference]: With dead ends: 19 [2021-11-20 23:12:49,050 INFO L226 Difference]: Without dead ends: 15 [2021-11-20 23:12:49,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:49,056 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:49,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:12:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-20 23:12:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-20 23:12:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-20 23:12:49,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2021-11-20 23:12:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:49,067 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-20 23:12:49,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-20 23:12:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:12:49,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:49,073 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:49,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:12:49,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:49,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash -826033172, now seen corresponding path program 1 times [2021-11-20 23:12:49,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:49,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424408874] [2021-11-20 23:12:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:49,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:49,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:49,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424408874] [2021-11-20 23:12:49,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424408874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:12:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860366165] [2021-11-20 23:12:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:49,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:49,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:49,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:12:49,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:12:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:49,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 23:12:49,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:49,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:49,501 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 23:12:49,502 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 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:12:49,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:49,528 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 23:12:49,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:12:49,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:49,576 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 18 treesize of output 19 [2021-11-20 23:12:49,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:49,588 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 18 treesize of output 19 [2021-11-20 23:12:50,284 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 56 treesize of output 36 [2021-11-20 23:12:50,300 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 44 treesize of output 28 [2021-11-20 23:12:50,417 INFO L354 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2021-11-20 23:12:50,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 68 [2021-11-20 23:12:50,981 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:12:50,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2021-11-20 23:12:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:51,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:12:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:51,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860366165] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:12:51,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1789234797] [2021-11-20 23:12:51,361 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-20 23:12:51,362 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:12:51,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:12:51,371 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:12:51,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:12:51,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,441 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 23:12:51,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-11-20 23:12:51,512 INFO L354 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2021-11-20 23:12:51,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 45 [2021-11-20 23:12:51,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,581 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 23:12:51,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-11-20 23:12:51,686 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-20 23:12:51,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 39 treesize of output 61 [2021-11-20 23:12:51,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 54 [2021-11-20 23:12:51,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:51,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-20 23:12:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 55 [2021-11-20 23:12:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,487 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 105 [2021-11-20 23:12:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:52,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 54 [2021-11-20 23:12:53,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:53,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:12:53,378 INFO L354 Elim1Store]: treesize reduction 618, result has 4.8 percent of original size [2021-11-20 23:12:53,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 325 treesize of output 283 [2021-11-20 23:12:53,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:53,724 INFO L354 Elim1Store]: treesize reduction 188, result has 13.0 percent of original size [2021-11-20 23:12:53,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 398 treesize of output 346 [2021-11-20 23:12:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:12:53,788 INFO L354 Elim1Store]: treesize reduction 188, result has 13.0 percent of original size [2021-11-20 23:12:53,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 353 treesize of output 319 [2021-11-20 23:12:54,520 INFO L354 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2021-11-20 23:12:54,521 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 131 [2021-11-20 23:12:54,549 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 23:12:54,550 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 87 [2021-11-20 23:12:54,590 INFO L354 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2021-11-20 23:12:54,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 80 [2021-11-20 23:12:55,831 INFO L354 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2021-11-20 23:12:55,831 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 131 [2021-11-20 23:12:55,859 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 23:12:55,859 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 87 [2021-11-20 23:12:55,900 INFO L354 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2021-11-20 23:12:55,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 80 [2021-11-20 23:12:56,350 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:12:57,040 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:12:57,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:12:57,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2021-11-20 23:12:57,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048752730] [2021-11-20 23:12:57,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:12:57,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:12:57,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:12:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:12:57,043 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:57,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:57,552 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-20 23:12:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:12:57,552 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 23:12:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:57,552 INFO L225 Difference]: With dead ends: 25 [2021-11-20 23:12:57,552 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 23:12:57,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-11-20 23:12:57,554 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:57,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2021-11-20 23:12:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 23:12:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 23:12:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-20 23:12:57,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-11-20 23:12:57,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:57,558 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-20 23:12:57,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:57,558 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-20 23:12:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:12:57,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:57,559 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:57,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:12:57,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:57,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash -315137184, now seen corresponding path program 1 times [2021-11-20 23:12:57,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:57,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729797206] [2021-11-20 23:12:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:57,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:57,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:57,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729797206] [2021-11-20 23:12:57,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729797206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:12:57,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441120561] [2021-11-20 23:12:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:57,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:57,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:57,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:12:57,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:12:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:57,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 23:12:57,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:12:58,013 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:12:58,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 23:12:58,028 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:12:58,033 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 1 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 23:12:58,042 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:12:58,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 23:12:58,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-20 23:12:58,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802896108] [2021-11-20 23:12:58,163 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-20 23:12:58,163 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:12:58,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:12:58,164 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:12:58,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:12:58,183 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6645fcb8 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:388) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:12:58,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:12:58,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-20 23:12:58,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057795285] [2021-11-20 23:12:58,192 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 23:12:58,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:12:58,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:12:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:58,193 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:12:58,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:12:58,198 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:58,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:12:58,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:12:58,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:12:58,416 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6645fcb8 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:12:58,419 INFO L158 Benchmark]: Toolchain (without parser) took 11204.22ms. Allocated memory was 130.0MB in the beginning and 197.1MB in the end (delta: 67.1MB). Free memory was 93.2MB in the beginning and 150.3MB in the end (delta: -57.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-11-20 23:12:58,419 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:58,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.31ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 95.1MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:12:58,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.14ms. Allocated memory is still 130.0MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:58,420 INFO L158 Benchmark]: Boogie Preprocessor took 41.64ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:58,420 INFO L158 Benchmark]: RCFGBuilder took 517.01ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 75.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 23:12:58,421 INFO L158 Benchmark]: TraceAbstraction took 10092.25ms. Allocated memory was 130.0MB in the beginning and 197.1MB in the end (delta: 67.1MB). Free memory was 75.3MB in the beginning and 150.3MB in the end (delta: -75.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:58,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.31ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 95.1MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.14ms. Allocated memory is still 130.0MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.64ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.01ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 75.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10092.25ms. Allocated memory was 130.0MB in the beginning and 197.1MB in the end (delta: 67.1MB). Free memory was 75.3MB in the beginning and 150.3MB in the end (delta: -75.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6645fcb8 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6645fcb8: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-20 23:12:58,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/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_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/shared_mem2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/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 0f2b1437458922f937e4f63e8c97355790d0c2b77a3c021e76d395c8c90c4257 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:13:00,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:13:00,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:13:00,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:13:00,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:13:00,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:13:00,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:13:00,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:13:00,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:13:00,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:13:00,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:13:00,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:13:00,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:13:00,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:13:00,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:13:00,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:13:00,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:13:00,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:13:01,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:13:01,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:13:01,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:13:01,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:13:01,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:13:01,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:13:01,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:13:01,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:13:01,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:13:01,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:13:01,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:13:01,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:13:01,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:13:01,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:13:01,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:13:01,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:13:01,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:13:01,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:13:01,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:13:01,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:13:01,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:13:01,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:13:01,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:13:01,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:13:01,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:13:01,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:13:01,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:13:01,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:13:01,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:13:01,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:13:01,094 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:13:01,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:13:01,095 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:13:01,095 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:13:01,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:13:01,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:13:01,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:13:01,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:13:01,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:13:01,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:13:01,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:13:01,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:13:01,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:13:01,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:13:01,101 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:13:01,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:13:01,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:13:01,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:13:01,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:13:01,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:13:01,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:13:01,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:13:01,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:01,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:13:01,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:13:01,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:13:01,113 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:13:01,113 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:13:01,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:13:01,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:13:01,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:13:01,114 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f2b1437458922f937e4f63e8c97355790d0c2b77a3c021e76d395c8c90c4257 [2021-11-20 23:13:01,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:13:01,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:13:01,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:13:01,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:13:01,546 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:13:01,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/heap-data/shared_mem2.i [2021-11-20 23:13:01,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/7e3bee505/aad317a90a974d0c888dbb2a64313587/FLAG231992c11 [2021-11-20 23:13:02,285 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:02,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/sv-benchmarks/c/heap-data/shared_mem2.i [2021-11-20 23:13:02,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/7e3bee505/aad317a90a974d0c888dbb2a64313587/FLAG231992c11 [2021-11-20 23:13:02,560 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/data/7e3bee505/aad317a90a974d0c888dbb2a64313587 [2021-11-20 23:13:02,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:02,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:02,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:02,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:02,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:02,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:02" (1/1) ... [2021-11-20 23:13:02,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa678dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:02, skipping insertion in model container [2021-11-20 23:13:02,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:02" (1/1) ... [2021-11-20 23:13:02,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:02,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:02,977 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_cd42173d-76df-4497-97ff-b60c90c1d076/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-11-20 23:13:02,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:03,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:03,055 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_cd42173d-76df-4497-97ff-b60c90c1d076/sv-benchmarks/c/heap-data/shared_mem2.i[23827,23840] [2021-11-20 23:13:03,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:03,099 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:03,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03 WrapperNode [2021-11-20 23:13:03,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:03,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:03,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:03,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:03,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,180 INFO L137 Inliner]: procedures = 124, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-20 23:13:03,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:03,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:03,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:03,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:03,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:03,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:03,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:03,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:03,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (1/1) ... [2021-11-20 23:13:03,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:03,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:03,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:03,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:13:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:13:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:13:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:13:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:13:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:13:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:03,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:03,446 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:03,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:13:04,087 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:13:04,092 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:13:04,093 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:13:04,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:04 BoogieIcfgContainer [2021-11-20 23:13:04,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:13:04,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:13:04,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:13:04,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:13:04,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:02" (1/3) ... [2021-11-20 23:13:04,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59029a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:04, skipping insertion in model container [2021-11-20 23:13:04,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:03" (2/3) ... [2021-11-20 23:13:04,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59029a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:04, skipping insertion in model container [2021-11-20 23:13:04,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:04" (3/3) ... [2021-11-20 23:13:04,102 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2021-11-20 23:13:04,107 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:13:04,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:13:04,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:13:04,188 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:13:04,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:13:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:13:04,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:04,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:04,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 532134152, now seen corresponding path program 1 times [2021-11-20 23:13:04,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:04,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487841548] [2021-11-20 23:13:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:04,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:04,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:04,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:04,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:13:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:04,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:13:04,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:04,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:04,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487841548] [2021-11-20 23:13:04,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487841548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:04,411 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:04,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:13:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603734150] [2021-11-20 23:13:04,414 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:04,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:13:04,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:04,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:13:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:13:04,446 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-20 23:13:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:04,460 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2021-11-20 23:13:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:13:04,462 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 [2021-11-20 23:13:04,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:04,470 INFO L225 Difference]: With dead ends: 28 [2021-11-20 23:13:04,470 INFO L226 Difference]: Without dead ends: 13 [2021-11-20 23:13:04,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:13:04,476 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:04,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:13:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-20 23:13:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 23:13:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-20 23:13:04,507 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-11-20 23:13:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-20 23:13:04,508 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) [2021-11-20 23:13:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-20 23:13:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:13:04,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:04,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:04,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:04,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:04,723 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -982132135, now seen corresponding path program 1 times [2021-11-20 23:13:04,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:04,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289309365] [2021-11-20 23:13:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:04,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:04,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:04,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:13:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:04,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:13:04,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:05,011 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:13:05,012 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 2 case distinctions, treesize of input 67 treesize of output 43 [2021-11-20 23:13:05,066 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 23:13:05,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 30 [2021-11-20 23:13:05,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-20 23:13:05,327 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:13:05,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-11-20 23:13:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:05,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:05,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:05,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289309365] [2021-11-20 23:13:05,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289309365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:05,457 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:05,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:13:05,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944992578] [2021-11-20 23:13:05,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:05,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:13:05,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:13:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:13:05,461 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:05,741 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-11-20 23:13:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:13:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:13:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:05,743 INFO L225 Difference]: With dead ends: 22 [2021-11-20 23:13:05,743 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 23:13:05,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:13:05,745 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:05,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 6 Unchecked, 0.3s Time] [2021-11-20 23:13:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 23:13:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-20 23:13:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-11-20 23:13:05,751 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2021-11-20 23:13:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:05,752 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-11-20 23:13:05,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-11-20 23:13:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:13:05,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:05,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:05,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 23:13:05,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:05,965 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:05,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:05,966 INFO L85 PathProgramCache]: Analyzing trace with hash -17837994, now seen corresponding path program 1 times [2021-11-20 23:13:05,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:05,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412305793] [2021-11-20 23:13:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:05,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:05,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:05,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:13:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:06,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:13:06,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:06,169 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:13:06,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 23:13:06,208 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:06,209 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 1 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 23:13:06,232 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:06,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 23:13:06,637 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-11-20 23:13:06,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 95 [2021-11-20 23:13:06,787 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-11-20 23:13:06,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 65 [2021-11-20 23:13:06,841 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 23:13:06,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 52 [2021-11-20 23:13:06,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:13:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:06,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:09,092 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_4| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_4| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_4|))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_4| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_4|) |v_ULTIMATE.start_main_~n~0#1.offset_4| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_4|) v_DerPreprocessor_2) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_4|) v_DerPreprocessor_3)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_4))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) is different from false [2021-11-20 23:13:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-20 23:13:09,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:09,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412305793] [2021-11-20 23:13:09,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412305793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:09,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017479310] [2021-11-20 23:13:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:09,215 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:13:09,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:13:09,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:13:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-20 23:13:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:09,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:13:09,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:10,489 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:13:10,489 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:13:12,018 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:13:12,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:13:12,178 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:13:12,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-20 23:13:12,511 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-11-20 23:13:12,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 102 treesize of output 93 [2021-11-20 23:13:12,644 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-11-20 23:13:12,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 63 [2021-11-20 23:13:12,682 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 23:13:12,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-11-20 23:13:12,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:13:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:12,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:14,852 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_6| (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_6| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_6|) |v_ULTIMATE.start_main_~n~0#1.offset_6| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_6|) v_DerPreprocessor_6) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_6|) v_DerPreprocessor_7)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_8))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_6|))))) is different from false [2021-11-20 23:13:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-20 23:13:14,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2017479310] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:14,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834389445] [2021-11-20 23:13:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:14,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:14,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:13:14,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:13:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:15,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:13:15,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:15,794 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:13:15,794 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:13:16,650 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:13:16,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:13:16,830 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:13:16,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-20 23:13:17,103 INFO L354 Elim1Store]: treesize reduction 170, result has 11.5 percent of original size [2021-11-20 23:13:17,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 102 treesize of output 93 [2021-11-20 23:13:17,239 INFO L354 Elim1Store]: treesize reduction 174, result has 14.7 percent of original size [2021-11-20 23:13:17,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 63 [2021-11-20 23:13:17,282 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 23:13:17,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-11-20 23:13:17,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:13:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:17,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:19,431 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_8| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_8| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_8|))))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_8| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_8|) |v_ULTIMATE.start_main_~n~0#1.offset_8| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_8|) v_DerPreprocessor_10) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_8|) v_DerPreprocessor_11)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_12))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) is different from false [2021-11-20 23:13:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-20 23:13:19,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834389445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:19,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:13:19,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-20 23:13:19,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577865778] [2021-11-20 23:13:19,527 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:13:19,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:13:19,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:13:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=30, Unknown=3, NotChecked=36, Total=90 [2021-11-20 23:13:19,529 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:22,417 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-11-20 23:13:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:13:22,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 23:13:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:22,419 INFO L225 Difference]: With dead ends: 31 [2021-11-20 23:13:22,419 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 23:13:22,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=33, Invalid=48, Unknown=3, NotChecked=48, Total=132 [2021-11-20 23:13:22,421 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:22,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 47 Unchecked, 0.7s Time] [2021-11-20 23:13:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 23:13:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-11-20 23:13:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-11-20 23:13:22,430 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2021-11-20 23:13:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:22,431 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-11-20 23:13:22,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-11-20 23:13:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:13:22,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:22,432 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:22,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:22,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:22,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:23,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:23,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:23,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:23,038 INFO L85 PathProgramCache]: Analyzing trace with hash 594646320, now seen corresponding path program 1 times [2021-11-20 23:13:23,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:23,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695254263] [2021-11-20 23:13:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:23,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:23,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:23,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:13:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:23,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:13:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:23,255 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:13:23,256 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:13:23,312 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:13:23,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:13:23,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:23,379 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 18 treesize of output 19 [2021-11-20 23:13:23,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-20 23:13:23,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:23,424 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 18 treesize of output 19 [2021-11-20 23:13:23,786 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:13:23,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 76 [2021-11-20 23:13:23,794 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:13:23,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2021-11-20 23:13:23,817 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-20 23:13:23,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-20 23:13:23,916 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:13:23,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2021-11-20 23:13:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:23,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:24,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:24,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695254263] [2021-11-20 23:13:24,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695254263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:24,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1978271441] [2021-11-20 23:13:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:24,221 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:13:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:13:24,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:13:24,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-20 23:13:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:24,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 23:13:24,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:24,355 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 18 treesize of output 19 [2021-11-20 23:13:24,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:24,394 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 23:13:24,395 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 1 case distinctions, treesize of input 58 treesize of output 38 [2021-11-20 23:13:24,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:24,404 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:13:24,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2021-11-20 23:13:24,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:24,422 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 18 treesize of output 19 [2021-11-20 23:13:24,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:13:24,957 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 1 case distinctions, treesize of input 88 treesize of output 68 [2021-11-20 23:13:25,047 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-11-20 23:13:25,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 60 [2021-11-20 23:13:25,059 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:13:25,060 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 1 case distinctions, treesize of input 61 treesize of output 45 [2021-11-20 23:13:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:25,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:26,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1978271441] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:26,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68057156] [2021-11-20 23:13:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:26,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:26,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:26,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:13:26,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 23:13:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:26,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 23:13:26,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:26,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:26,637 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 18 treesize of output 19 [2021-11-20 23:13:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:26,738 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 23:13:26,738 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 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:13:26,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:26,774 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 23:13:26,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:13:26,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:13:26,837 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 18 treesize of output 19 [2021-11-20 23:13:26,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-11-20 23:13:27,221 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:13:27,221 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 1 case distinctions, treesize of input 88 treesize of output 68 [2021-11-20 23:13:27,263 INFO L354 Elim1Store]: treesize reduction 104, result has 9.6 percent of original size [2021-11-20 23:13:27,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 48 [2021-11-20 23:13:27,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:13:27,271 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 1 case distinctions, treesize of input 45 treesize of output 29 [2021-11-20 23:13:27,444 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:13:27,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2021-11-20 23:13:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:27,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:27,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68057156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:27,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:13:27,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 10, 6, 6] total 26 [2021-11-20 23:13:27,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433244128] [2021-11-20 23:13:27,549 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:13:27,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 23:13:27,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 23:13:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:13:27,556 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:32,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:35,907 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-11-20 23:13:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:13:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 23:13:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:35,912 INFO L225 Difference]: With dead ends: 43 [2021-11-20 23:13:35,912 INFO L226 Difference]: Without dead ends: 39 [2021-11-20 23:13:35,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:13:35,914 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:35,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 133 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 112 Invalid, 0 Unknown, 43 Unchecked, 7.2s Time] [2021-11-20 23:13:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-20 23:13:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-11-20 23:13:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-11-20 23:13:35,922 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 13 [2021-11-20 23:13:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:35,922 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-11-20 23:13:35,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 26 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-11-20 23:13:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:13:35,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:35,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:35,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:36,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:36,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-20 23:13:36,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:36,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1044104429, now seen corresponding path program 2 times [2021-11-20 23:13:36,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839147576] [2021-11-20 23:13:36,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:13:36,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:36,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:36,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:36,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 23:13:36,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:13:36,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:13:36,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:13:36,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:36,675 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:13:36,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-20 23:13:36,707 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:36,707 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 1 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 23:13:36,727 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:36,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 23:13:37,024 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:13:37,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 95 [2021-11-20 23:13:37,142 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:13:37,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 65 [2021-11-20 23:13:37,216 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:13:37,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-11-20 23:13:37,541 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:13:37,541 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 2 case distinctions, treesize of input 126 treesize of output 114 [2021-11-20 23:13:37,618 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:13:37,618 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 2 case distinctions, treesize of input 105 treesize of output 78 [2021-11-20 23:13:37,656 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-20 23:13:37,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 70 [2021-11-20 23:13:37,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:13:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:37,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:39,860 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_14| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_13| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_14| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_14|) |v_ULTIMATE.start_main_~n~0#1.offset_13| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_13|) v_DerPreprocessor_15) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_13|) v_DerPreprocessor_16)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_17))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_14|))))))) is different from false [2021-11-20 23:13:42,312 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_15| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_14| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_13| (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_15| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_15|) |v_ULTIMATE.start_main_~n~0#1.offset_14| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_14|) v_DerPreprocessor_20) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_14|) v_DerPreprocessor_19)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_18))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_14| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_14|) |v_ULTIMATE.start_main_~n~0#1.offset_13| |v_ULTIMATE.start_main_~x~0#1_16|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_13|) v_DerPreprocessor_15) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_13|) v_DerPreprocessor_16))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_17)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_15| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_14|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_15|))))) is different from false [2021-11-20 23:13:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-20 23:13:42,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:42,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839147576] [2021-11-20 23:13:42,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839147576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:42,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1499153447] [2021-11-20 23:13:42,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:13:42,800 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:13:42,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:13:42,804 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:13:42,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-20 23:13:42,936 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:13:42,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11491344] [2021-11-20 23:13:42,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:13:42,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:42,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:42,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-11-20 23:13:42,944 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:13:42,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 23:13:43,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:13:43,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:13:43,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:13:43,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:43,621 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:13:43,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-20 23:13:43,652 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:43,653 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 1 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 23:13:43,674 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:43,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 23:13:44,022 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:13:44,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 98 [2021-11-20 23:13:44,130 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:13:44,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 68 [2021-11-20 23:13:44,192 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:13:44,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 70 [2021-11-20 23:13:44,502 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:13:44,502 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 2 case distinctions, treesize of input 128 treesize of output 116 [2021-11-20 23:13:44,561 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:13:44,562 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 2 case distinctions, treesize of input 107 treesize of output 80 [2021-11-20 23:13:44,618 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-20 23:13:44,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 72 [2021-11-20 23:13:44,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:13:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:44,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:46,777 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_18| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_16| (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_18| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_18|) |v_ULTIMATE.start_main_~n~0#1.offset_16| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_16|) v_DerPreprocessor_23) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_16|) v_DerPreprocessor_24)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_25))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_18|))))) is different from false [2021-11-20 23:13:49,236 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_19| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_18| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_16| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_20| (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_28 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_19|))))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_19| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_19|) |v_ULTIMATE.start_main_~n~0#1.offset_17| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_17|) v_DerPreprocessor_28) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_17|) v_DerPreprocessor_27)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_26))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_18| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_18|) |v_ULTIMATE.start_main_~n~0#1.offset_16| |v_ULTIMATE.start_main_~x~0#1_20|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_16|) v_DerPreprocessor_23) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_16|) v_DerPreprocessor_24))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_25)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_19| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_18|))))) is different from false [2021-11-20 23:13:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-20 23:13:49,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11491344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:13:49,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-20 23:13:49,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 12 [2021-11-20 23:13:49,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562231183] [2021-11-20 23:13:49,659 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-20 23:13:49,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:13:49,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:13:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=41, Unknown=4, NotChecked=60, Total=132 [2021-11-20 23:13:49,661 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:58,492 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 102 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:13:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:58,582 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2021-11-20 23:13:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:13:58,583 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 23:13:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:58,588 INFO L225 Difference]: With dead ends: 48 [2021-11-20 23:13:58,588 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 23:13:58,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 4 IntricatePredicates, 2 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=45, Invalid=76, Unknown=5, NotChecked=84, Total=210 [2021-11-20 23:13:58,591 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:58,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 124 Unchecked, 0.4s Time] [2021-11-20 23:13:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 23:13:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-11-20 23:13:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:58,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2021-11-20 23:13:58,606 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 13 [2021-11-20 23:13:58,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:58,607 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2021-11-20 23:13:58,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2021-11-20 23:13:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:13:58,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:58,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:58,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:58,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:59,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:59,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:59,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash 556329616, now seen corresponding path program 3 times [2021-11-20 23:13:59,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:59,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106238430] [2021-11-20 23:13:59,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:13:59,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:59,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:59,018 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:59,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 23:13:59,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 23:13:59,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:13:59,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:13:59,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:59,243 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:13:59,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-20 23:13:59,274 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:59,274 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 1 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 23:13:59,299 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:13:59,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 23:13:59,566 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:13:59,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 96 [2021-11-20 23:13:59,652 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:13:59,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 66 [2021-11-20 23:13:59,707 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:13:59,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 68 [2021-11-20 23:14:00,045 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:14:00,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 125 [2021-11-20 23:14:00,101 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-20 23:14:00,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 89 [2021-11-20 23:14:00,177 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-20 23:14:00,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 77 treesize of output 104 [2021-11-20 23:14:00,871 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:14:00,872 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 2 case distinctions, treesize of input 191 treesize of output 179 [2021-11-20 23:14:00,966 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:14:00,966 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 2 case distinctions, treesize of input 170 treesize of output 143 [2021-11-20 23:14:01,038 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 23:14:01,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 137 [2021-11-20 23:14:01,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:14:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:01,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:03,246 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_19| (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_23| (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_23| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_23|) |v_ULTIMATE.start_main_~n~0#1.offset_19| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_32) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_33)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_34))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_23|))))) is different from false [2021-11-20 23:14:05,740 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_19| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_23| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_20| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_24| (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_24| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_23|)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_24|))))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_24| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_24|) |v_ULTIMATE.start_main_~n~0#1.offset_20| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_20|) v_DerPreprocessor_37) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_20|) v_DerPreprocessor_36)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_35))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_23| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_23|) |v_ULTIMATE.start_main_~n~0#1.offset_19| |v_ULTIMATE.start_main_~x~0#1_24|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_32) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_33))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_34)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) is different from false [2021-11-20 23:14:09,600 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_19| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_25| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_26| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_23| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_20| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_24| (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_25| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~n~0#1.base_24| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_23|))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_25|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~n~0#1.base_24|)))))) (bvslt (select (select (let ((.cse2 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_25| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_25|) |v_ULTIMATE.start_main_~n~0#1.offset_21| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_21|) v_DerPreprocessor_40) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_21|) v_DerPreprocessor_39)))) (store .cse6 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_38))))) (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_24| (store (store (store (select .cse5 |v_ULTIMATE.start_main_~n~0#1.base_24|) |v_ULTIMATE.start_main_~n~0#1.offset_20| |v_ULTIMATE.start_main_~x~0#1_26|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_20|) v_DerPreprocessor_37) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_20|) v_DerPreprocessor_36))))) (store .cse4 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_35))))) (store .cse3 |v_ULTIMATE.start_main_~n~0#1.base_23| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~n~0#1.base_23|) |v_ULTIMATE.start_main_~n~0#1.offset_19| |v_ULTIMATE.start_main_~x~0#1_24|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_32) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_33))))) (store .cse1 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_34)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32))))) is different from false [2021-11-20 23:14:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-20 23:14:11,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:11,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106238430] [2021-11-20 23:14:11,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106238430] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1324209216] [2021-11-20 23:14:11,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:14:11,487 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:14:11,493 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:14:11,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-20 23:14:11,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:11,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722682464] [2021-11-20 23:14:11,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:14:11,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:11,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 1 [2021-11-20 23:14:11,653 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:11,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 23:14:15,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 23:14:15,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:14:15,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:14:15,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:15,449 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:14:15,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-20 23:14:15,477 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:14:15,478 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 1 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 23:14:15,494 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 23:14:15,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 23:14:15,722 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:14:15,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 95 [2021-11-20 23:14:15,811 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:14:15,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 65 [2021-11-20 23:14:15,868 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:14:15,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-11-20 23:14:16,181 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:14:16,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 138 treesize of output 126 [2021-11-20 23:14:16,249 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-20 23:14:16,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 90 [2021-11-20 23:14:16,365 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-20 23:14:16,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 105 [2021-11-20 23:14:16,921 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:14:16,921 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 2 case distinctions, treesize of input 189 treesize of output 177 [2021-11-20 23:14:17,020 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:14:17,020 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 2 case distinctions, treesize of input 168 treesize of output 141 [2021-11-20 23:14:17,085 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 23:14:17,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 135 [2021-11-20 23:14:17,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:14:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:17,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:19,202 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_29| (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_23| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_29|))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_29| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_29|) |v_ULTIMATE.start_main_~n~0#1.offset_23| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_44) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_45)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_46))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) is different from false [2021-11-20 23:14:21,583 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_30| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_23| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_30| (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_30|))))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_30| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_30|) |v_ULTIMATE.start_main_~n~0#1.offset_24| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_24|) v_DerPreprocessor_49) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_24|) v_DerPreprocessor_48)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_47))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_29| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_29|) |v_ULTIMATE.start_main_~n~0#1.offset_23| |v_ULTIMATE.start_main_~x~0#1_30|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_44) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_45))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_46)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_30| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_29|)))))) is different from false [2021-11-20 23:14:25,735 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_31| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_25| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_30| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_23| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_30| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_32| (_ BitVec 32)) (v_DerPreprocessor_51 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (let ((.cse6 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_31| (_ bv1 1)))) (or (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_31| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_31|) |v_ULTIMATE.start_main_~n~0#1.offset_25| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_25|) v_DerPreprocessor_52) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_25|) v_DerPreprocessor_51)))) (store .cse5 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_50))))) (store .cse4 |v_ULTIMATE.start_main_~n~0#1.base_30| (store (store (store (select .cse4 |v_ULTIMATE.start_main_~n~0#1.base_30|) |v_ULTIMATE.start_main_~n~0#1.offset_24| |v_ULTIMATE.start_main_~x~0#1_32|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_24|) v_DerPreprocessor_49) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_24|) v_DerPreprocessor_48))))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_47))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_29| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_29|) |v_ULTIMATE.start_main_~n~0#1.offset_23| |v_ULTIMATE.start_main_~x~0#1_30|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_44) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_45))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_46)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse6 |v_ULTIMATE.start_main_~n~0#1.base_30| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_29|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_31|))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse6 |v_ULTIMATE.start_main_~n~0#1.base_30|)))))))) is different from false [2021-11-20 23:14:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-20 23:14:27,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722682464] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:27,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-20 23:14:27,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 15 [2021-11-20 23:14:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141126286] [2021-11-20 23:14:27,807 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-20 23:14:27,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:14:27,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:14:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:14:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=6, NotChecked=114, Total=210 [2021-11-20 23:14:27,808 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:30,044 WARN L860 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~m~0#1.base|)) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~head~0#1.offset| (_ BitVec 32))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) (_ bv1 32))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_19| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_25| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_26| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_23| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_20| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_24| (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (v_DerPreprocessor_38 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_25| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~n~0#1.base_24| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_23|))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_25|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~n~0#1.base_24|)))))) (bvslt (select (select (let ((.cse2 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_25| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_25|) |v_ULTIMATE.start_main_~n~0#1.offset_21| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_21|) v_DerPreprocessor_40) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_21|) v_DerPreprocessor_39)))) (store .cse6 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_38))))) (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_24| (store (store (store (select .cse5 |v_ULTIMATE.start_main_~n~0#1.base_24|) |v_ULTIMATE.start_main_~n~0#1.offset_20| |v_ULTIMATE.start_main_~x~0#1_26|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_20|) v_DerPreprocessor_37) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_20|) v_DerPreprocessor_36))))) (store .cse4 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_35))))) (store .cse3 |v_ULTIMATE.start_main_~n~0#1.base_23| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~n~0#1.base_23|) |v_ULTIMATE.start_main_~n~0#1.offset_19| |v_ULTIMATE.start_main_~x~0#1_24|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_32) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_19|) v_DerPreprocessor_33))))) (store .cse1 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_34)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32))))) (= (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|)))))) (_ bv0 1)) (forall ((|v_ULTIMATE.start_main_~n~0#1.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_31| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_25| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_30| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_23| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_30| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_32| (_ BitVec 32)) (v_DerPreprocessor_51 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (let ((.cse13 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_31| (_ bv1 1)))) (or (bvslt (select (select (let ((.cse8 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse7 (let ((.cse9 (let ((.cse10 (let ((.cse11 (let ((.cse12 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_31| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_31|) |v_ULTIMATE.start_main_~n~0#1.offset_25| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_25|) v_DerPreprocessor_52) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_25|) v_DerPreprocessor_51)))) (store .cse12 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse12 |c_ULTIMATE.start_main_~list~0#1.base|) .cse8 v_DerPreprocessor_50))))) (store .cse11 |v_ULTIMATE.start_main_~n~0#1.base_30| (store (store (store (select .cse11 |v_ULTIMATE.start_main_~n~0#1.base_30|) |v_ULTIMATE.start_main_~n~0#1.offset_24| |v_ULTIMATE.start_main_~x~0#1_32|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_24|) v_DerPreprocessor_49) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_24|) v_DerPreprocessor_48))))) (store .cse10 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~list~0#1.base|) .cse8 v_DerPreprocessor_47))))) (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_29| (store (store (store (select .cse9 |v_ULTIMATE.start_main_~n~0#1.base_29|) |v_ULTIMATE.start_main_~n~0#1.offset_23| |v_ULTIMATE.start_main_~x~0#1_30|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_44) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_23|) v_DerPreprocessor_45))))) (store .cse7 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse8 v_DerPreprocessor_46)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse13 |v_ULTIMATE.start_main_~n~0#1.base_30| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_29|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_31|))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse13 |v_ULTIMATE.start_main_~n~0#1.base_30|))))))))) is different from true [2021-11-20 23:14:41,014 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 134 DAG size of output: 82 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:14:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:41,031 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2021-11-20 23:14:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:14:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:14:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:41,033 INFO L225 Difference]: With dead ends: 61 [2021-11-20 23:14:41,033 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:14:41,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=53, Invalid=77, Unknown=8, NotChecked=168, Total=306 [2021-11-20 23:14:41,034 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:41,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 82 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 157 Unchecked, 0.2s Time] [2021-11-20 23:14:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:14:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-11-20 23:14:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2021-11-20 23:14:41,044 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 15 [2021-11-20 23:14:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:41,045 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2021-11-20 23:14:41,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2021-11-20 23:14:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:14:41,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:41,046 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:41,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:41,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:41,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:14:41,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1423314055, now seen corresponding path program 2 times [2021-11-20 23:14:41,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:14:41,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039516989] [2021-11-20 23:14:41,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:14:41,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:14:41,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:14:41,472 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:14:41,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 23:14:41,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:14:41,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:14:41,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 23:14:41,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:41,706 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:14:41,707 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:14:41,773 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:14:41,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:14:41,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:41,823 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 18 treesize of output 19 [2021-11-20 23:14:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:41,843 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 18 treesize of output 19 [2021-11-20 23:14:41,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-20 23:14:42,206 INFO L354 Elim1Store]: treesize reduction 116, result has 14.1 percent of original size [2021-11-20 23:14:42,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 143 [2021-11-20 23:14:42,228 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 23:14:42,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 92 [2021-11-20 23:14:42,257 INFO L354 Elim1Store]: treesize reduction 49, result has 5.8 percent of original size [2021-11-20 23:14:42,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 68 [2021-11-20 23:14:44,878 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-20 23:14:44,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 106 [2021-11-20 23:14:44,915 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 23:14:44,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 54 [2021-11-20 23:14:44,948 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-20 23:14:44,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 29 [2021-11-20 23:14:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:45,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:59,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:14:59,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039516989] [2021-11-20 23:14:59,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039516989] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:59,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1859705657] [2021-11-20 23:14:59,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:14:59,643 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:14:59,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:14:59,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:14:59,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-20 23:14:59,762 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:59,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008811080] [2021-11-20 23:14:59,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:14:59,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:59,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:59,763 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:59,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 1 [2021-11-20 23:14:59,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 23:15:00,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:15:00,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:15:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 23:15:00,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:00,423 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 18 treesize of output 19 [2021-11-20 23:15:00,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:00,435 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 18 treesize of output 19 [2021-11-20 23:15:00,839 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:00,840 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 1 case distinctions, treesize of input 70 treesize of output 50 [2021-11-20 23:15:00,921 INFO L354 Elim1Store]: treesize reduction 22, result has 62.1 percent of original size [2021-11-20 23:15:00,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 63 [2021-11-20 23:15:00,928 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:00,928 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 1 case distinctions, treesize of input 74 treesize of output 50 [2021-11-20 23:15:01,312 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 84 treesize of output 60 [2021-11-20 23:15:01,314 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 60 treesize of output 42 [2021-11-20 23:15:01,503 INFO L354 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2021-11-20 23:15:01,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 72 [2021-11-20 23:15:32,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:15:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:32,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:35,054 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 137 treesize of output 95 [2021-11-20 23:15:35,058 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 95 treesize of output 65 [2021-11-20 23:15:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:15:37,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008811080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:15:37,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-20 23:15:37,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10, 8] total 24 [2021-11-20 23:15:37,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448967351] [2021-11-20 23:15:37,635 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-20 23:15:37,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 23:15:37,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:15:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 23:15:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=446, Unknown=16, NotChecked=0, Total=552 [2021-11-20 23:15:37,636 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:48,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:16:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:02,744 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2021-11-20 23:16:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 23:16:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:16:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:02,746 INFO L225 Difference]: With dead ends: 74 [2021-11-20 23:16:02,746 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:16:02,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 65.7s TimeCoverageRelationStatistics Valid=248, Invalid=1066, Unknown=18, NotChecked=0, Total=1332 [2021-11-20 23:16:02,748 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:02,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 81 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 110 Invalid, 0 Unknown, 90 Unchecked, 5.7s Time] [2021-11-20 23:16:02,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:16:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2021-11-20 23:16:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2021-11-20 23:16:02,759 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 17 [2021-11-20 23:16:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:02,760 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2021-11-20 23:16:02,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2021-11-20 23:16:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:02,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:02,761 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:02,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-20 23:16:02,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:03,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:16:03,173 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1096645879, now seen corresponding path program 1 times [2021-11-20 23:16:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:16:03,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490533379] [2021-11-20 23:16:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:03,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:16:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:16:03,175 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:16:03,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 23:16:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:03,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:16:03,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:03,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:16:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:16:03,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:16:03,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:16:03,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490533379] [2021-11-20 23:16:03,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490533379] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:03,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030183121] [2021-11-20 23:16:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:03,402 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:16:03,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:16:03,416 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:16:03,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-20 23:16:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:03,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:16:03,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:03,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:16:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:16:03,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:16:03,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1030183121] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657941933] [2021-11-20 23:16:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:03,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:03,657 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:16:03,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 23:16:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:03,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:16:03,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:03,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:16:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:16:03,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:16:03,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657941933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:03,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:16:03,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 6 [2021-11-20 23:16:03,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293041688] [2021-11-20 23:16:03,833 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:16:03,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:16:03,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:16:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:16:03,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:16:03,839 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:04,819 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2021-11-20 23:16:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:16:04,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:16:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:04,821 INFO L225 Difference]: With dead ends: 48 [2021-11-20 23:16:04,821 INFO L226 Difference]: Without dead ends: 19 [2021-11-20 23:16:04,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:16:04,822 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:04,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:16:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-20 23:16:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-20 23:16:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-20 23:16:04,828 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 17 [2021-11-20 23:16:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:04,828 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-20 23:16:04,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-20 23:16:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:04,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:04,830 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:04,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:05,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:05,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:05,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:16:05,441 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash -35962357, now seen corresponding path program 1 times [2021-11-20 23:16:05,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:16:05,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040698094] [2021-11-20 23:16:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:05,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:16:05,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:16:05,442 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:16:05,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 23:16:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:05,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:16:05,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:06,965 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:16:06,965 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:16:08,636 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:16:08,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:16:08,824 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:16:08,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 23:16:09,207 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:16:09,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 95 [2021-11-20 23:16:09,336 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:16:09,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 65 [2021-11-20 23:16:09,418 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:16:09,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2021-11-20 23:16:09,772 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:16:09,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 121 [2021-11-20 23:16:09,846 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-20 23:16:09,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 85 [2021-11-20 23:16:09,960 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-20 23:16:09,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 73 treesize of output 100 [2021-11-20 23:16:10,894 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:16:10,894 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 2 case distinctions, treesize of input 184 treesize of output 172 [2021-11-20 23:16:11,025 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:16:11,025 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 2 case distinctions, treesize of input 163 treesize of output 136 [2021-11-20 23:16:11,154 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 23:16:11,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 124 treesize of output 130 [2021-11-20 23:16:11,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:16:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:16:11,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:13,460 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_60 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_28| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_36| (_ BitVec 32)) (v_DerPreprocessor_58 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_59 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_36| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_36|) |v_ULTIMATE.start_main_~n~0#1.offset_28| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_28|) v_DerPreprocessor_58) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_28|) v_DerPreprocessor_59)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_60))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_36|))))) is different from false [2021-11-20 23:16:15,873 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_29| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_28| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_37| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_60 (_ BitVec 32)) (v_DerPreprocessor_61 (_ BitVec 32)) (v_DerPreprocessor_62 (_ BitVec 32)) (v_DerPreprocessor_63 (_ BitVec 32)) (v_DerPreprocessor_58 (_ BitVec 32)) (v_DerPreprocessor_59 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_37| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_37|) |v_ULTIMATE.start_main_~n~0#1.offset_29| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_29|) v_DerPreprocessor_63) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_29|) v_DerPreprocessor_62)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_61))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_36| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_36|) |v_ULTIMATE.start_main_~n~0#1.offset_28| |v_ULTIMATE.start_main_~x~0#1_37|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_28|) v_DerPreprocessor_58) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_28|) v_DerPreprocessor_59))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_60)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_37| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_36|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_37|)))))) is different from false [2021-11-20 23:16:19,792 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_29| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_28| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_30| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (v_DerPreprocessor_60 (_ BitVec 32)) (v_DerPreprocessor_61 (_ BitVec 32)) (v_DerPreprocessor_64 (_ BitVec 32)) (v_DerPreprocessor_65 (_ BitVec 32)) (v_DerPreprocessor_62 (_ BitVec 32)) (v_DerPreprocessor_63 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_58 (_ BitVec 32)) (v_DerPreprocessor_66 (_ BitVec 32)) (v_DerPreprocessor_59 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_38| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~n~0#1.base_37| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_36|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_38|)))) (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~n~0#1.base_37|)))) (bvslt (select (select (let ((.cse2 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_38| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_38|) |v_ULTIMATE.start_main_~n~0#1.offset_30| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_30|) v_DerPreprocessor_66) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_30|) v_DerPreprocessor_65)))) (store .cse6 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_64))))) (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_37| (store (store (store (select .cse5 |v_ULTIMATE.start_main_~n~0#1.base_37|) |v_ULTIMATE.start_main_~n~0#1.offset_29| |v_ULTIMATE.start_main_~x~0#1_39|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_29|) v_DerPreprocessor_63) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_29|) v_DerPreprocessor_62))))) (store .cse4 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_61))))) (store .cse3 |v_ULTIMATE.start_main_~n~0#1.base_36| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~n~0#1.base_36|) |v_ULTIMATE.start_main_~n~0#1.offset_28| |v_ULTIMATE.start_main_~x~0#1_37|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_28|) v_DerPreprocessor_58) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_28|) v_DerPreprocessor_59))))) (store .cse1 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_60)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32))))) is different from false [2021-11-20 23:16:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 14 not checked. [2021-11-20 23:16:24,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:16:24,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040698094] [2021-11-20 23:16:24,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040698094] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:24,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1802441262] [2021-11-20 23:16:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:24,690 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:16:24,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:16:24,691 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:16:24,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-20 23:16:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:25,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:16:25,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:26,682 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:16:26,682 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:16:27,751 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:16:27,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:16:27,925 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:16:27,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 23:16:28,278 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:16:28,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 97 [2021-11-20 23:16:28,410 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:16:28,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 67 [2021-11-20 23:16:28,512 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:16:28,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 69 [2021-11-20 23:16:28,852 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:16:28,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 121 [2021-11-20 23:16:28,957 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-20 23:16:28,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 85 [2021-11-20 23:16:29,123 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-20 23:16:29,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 73 treesize of output 100 [2021-11-20 23:16:30,032 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:16:30,032 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 2 case distinctions, treesize of input 183 treesize of output 171 [2021-11-20 23:16:30,130 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:16:30,131 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 2 case distinctions, treesize of input 162 treesize of output 135 [2021-11-20 23:16:30,218 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 23:16:30,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 129 [2021-11-20 23:16:30,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:16:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:16:30,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:32,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_71 (_ BitVec 32)) (v_DerPreprocessor_72 (_ BitVec 32)) (v_DerPreprocessor_70 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_32| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_42| (_ BitVec 32))) (or (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_42| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_42|) |v_ULTIMATE.start_main_~n~0#1.offset_32| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_32|) v_DerPreprocessor_70) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_32|) v_DerPreprocessor_71)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_72))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_42|)))))) is different from false [2021-11-20 23:16:34,806 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_33| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_32| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_43| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_42| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_44| (_ BitVec 32)) (v_DerPreprocessor_71 (_ BitVec 32)) (v_DerPreprocessor_72 (_ BitVec 32)) (v_DerPreprocessor_70 (_ BitVec 32)) (v_DerPreprocessor_75 (_ BitVec 32)) (v_DerPreprocessor_73 (_ BitVec 32)) (v_DerPreprocessor_74 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_43|)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_42|))))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_43| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_43|) |v_ULTIMATE.start_main_~n~0#1.offset_33| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_33|) v_DerPreprocessor_75) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_33|) v_DerPreprocessor_74)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_73))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_42| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_42|) |v_ULTIMATE.start_main_~n~0#1.offset_32| |v_ULTIMATE.start_main_~x~0#1_44|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_32|) v_DerPreprocessor_70) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_32|) v_DerPreprocessor_71))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_72)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) is different from false [2021-11-20 23:16:39,073 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_33| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_32| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_44| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_43| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_42| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_44| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_46| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_34| (_ BitVec 32)) (v_DerPreprocessor_71 (_ BitVec 32)) (v_DerPreprocessor_72 (_ BitVec 32)) (v_DerPreprocessor_70 (_ BitVec 32)) (v_DerPreprocessor_75 (_ BitVec 32)) (v_DerPreprocessor_76 (_ BitVec 32)) (v_DerPreprocessor_73 (_ BitVec 32)) (v_DerPreprocessor_74 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32))) (let ((.cse6 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_44| (_ bv1 1)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_44|))) (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_44| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_44|) |v_ULTIMATE.start_main_~n~0#1.offset_34| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_34|) v_DerPreprocessor_78) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_34|) v_DerPreprocessor_77)))) (store .cse5 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_76))))) (store .cse4 |v_ULTIMATE.start_main_~n~0#1.base_43| (store (store (store (select .cse4 |v_ULTIMATE.start_main_~n~0#1.base_43|) |v_ULTIMATE.start_main_~n~0#1.offset_33| |v_ULTIMATE.start_main_~x~0#1_46|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_33|) v_DerPreprocessor_75) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_33|) v_DerPreprocessor_74))))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_73))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_42| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_42|) |v_ULTIMATE.start_main_~n~0#1.offset_32| |v_ULTIMATE.start_main_~x~0#1_44|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_32|) v_DerPreprocessor_70) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_32|) v_DerPreprocessor_71))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_72)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse6 |v_ULTIMATE.start_main_~n~0#1.base_43|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse6 |v_ULTIMATE.start_main_~n~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_42|))))))))))) is different from false [2021-11-20 23:16:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 14 not checked. [2021-11-20 23:16:45,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1802441262] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341852665] [2021-11-20 23:16:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:45,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:45,175 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:16:45,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 23:16:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:45,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 23:16:45,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:46,191 INFO L354 Elim1Store]: treesize reduction 75, result has 29.9 percent of original size [2021-11-20 23:16:46,192 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 2 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 23:16:51,528 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 34 DAG size of output: 20 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:16:51,528 INFO L354 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2021-11-20 23:16:51,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 23:16:51,699 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 23:16:51,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 23:16:52,099 INFO L354 Elim1Store]: treesize reduction 158, result has 12.2 percent of original size [2021-11-20 23:16:52,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 96 [2021-11-20 23:16:52,226 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-20 23:16:52,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 66 [2021-11-20 23:16:52,319 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 23:16:52,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 68 [2021-11-20 23:16:52,631 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:16:52,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 119 [2021-11-20 23:16:52,704 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-20 23:16:52,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 83 [2021-11-20 23:16:52,822 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-20 23:16:52,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 71 treesize of output 98 [2021-11-20 23:16:53,654 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-20 23:16:53,654 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 2 case distinctions, treesize of input 183 treesize of output 171 [2021-11-20 23:16:53,793 INFO L354 Elim1Store]: treesize reduction 110, result has 13.4 percent of original size [2021-11-20 23:16:53,794 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 2 case distinctions, treesize of input 162 treesize of output 135 [2021-11-20 23:16:53,912 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 23:16:53,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 129 [2021-11-20 23:16:53,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:16:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:16:53,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:56,091 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_82 (_ BitVec 32)) (v_DerPreprocessor_83 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_48| (_ BitVec 32)) (v_DerPreprocessor_84 (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_36| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_48|)))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_48| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_48|) |v_ULTIMATE.start_main_~n~0#1.offset_36| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_36|) v_DerPreprocessor_82) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_36|) v_DerPreprocessor_83)))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|) v_DerPreprocessor_84))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) is different from false [2021-11-20 23:16:58,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_48| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_51| (_ BitVec 32)) (v_DerPreprocessor_82 (_ BitVec 32)) (v_DerPreprocessor_83 (_ BitVec 32)) (v_DerPreprocessor_86 (_ BitVec 32)) (v_DerPreprocessor_87 (_ BitVec 32)) (v_DerPreprocessor_84 (_ BitVec 32)) (v_DerPreprocessor_85 (_ BitVec 32))) (or (bvslt (select (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_49| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_49|) |v_ULTIMATE.start_main_~n~0#1.offset_37| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_37|) v_DerPreprocessor_87) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_37|) v_DerPreprocessor_86)))) (store .cse3 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_85))))) (store .cse2 |v_ULTIMATE.start_main_~n~0#1.base_48| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~n~0#1.base_48|) |v_ULTIMATE.start_main_~n~0#1.offset_36| |v_ULTIMATE.start_main_~x~0#1_51|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_36|) v_DerPreprocessor_82) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_36|) v_DerPreprocessor_83))))) (store .cse0 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_DerPreprocessor_84)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_49| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_48|))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_49|)))))) is different from false [2021-11-20 23:17:02,637 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~n~0#1.offset_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_48| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_37| (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.offset_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~n~0#1.base_50| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_51| (_ BitVec 32)) (v_DerPreprocessor_82 (_ BitVec 32)) (v_DerPreprocessor_83 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_53| (_ BitVec 32)) (v_DerPreprocessor_86 (_ BitVec 32)) (v_DerPreprocessor_87 (_ BitVec 32)) (v_DerPreprocessor_84 (_ BitVec 32)) (v_DerPreprocessor_85 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_88 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_50| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_50|))))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~n~0#1.base_49|))))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~n~0#1.base_49| (_ bv1 1)) |v_ULTIMATE.start_main_~n~0#1.base_48|))))) (bvslt (select (select (let ((.cse2 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_50| (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_50|) |v_ULTIMATE.start_main_~n~0#1.offset_38| |ULTIMATE.start_main_~x~0#1|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_38|) v_DerPreprocessor_90) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_38|) v_DerPreprocessor_89)))) (store .cse6 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_88))))) (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_49| (store (store (store (select .cse5 |v_ULTIMATE.start_main_~n~0#1.base_49|) |v_ULTIMATE.start_main_~n~0#1.offset_37| |v_ULTIMATE.start_main_~x~0#1_53|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_37|) v_DerPreprocessor_87) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_37|) v_DerPreprocessor_86))))) (store .cse4 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_85))))) (store .cse3 |v_ULTIMATE.start_main_~n~0#1.base_48| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~n~0#1.base_48|) |v_ULTIMATE.start_main_~n~0#1.offset_36| |v_ULTIMATE.start_main_~x~0#1_51|) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~n~0#1.offset_36|) v_DerPreprocessor_82) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1.offset_36|) v_DerPreprocessor_83))))) (store .cse1 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) .cse2 v_DerPreprocessor_84)))) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32))))) is different from false [2021-11-20 23:17:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 14 not checked. [2021-11-20 23:17:08,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341852665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:08,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:17:08,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-11-20 23:17:08,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995965998] [2021-11-20 23:17:08,418 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:08,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:17:08,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:17:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:17:08,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=57, Unknown=9, NotChecked=198, Total=306 [2021-11-20 23:17:08,420 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:19,826 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-11-20 23:17:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:17:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:17:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:19,827 INFO L225 Difference]: With dead ends: 19 [2021-11-20 23:17:19,827 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:17:19,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 23 SemanticMatches, 17 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=48, Invalid=67, Unknown=11, NotChecked=216, Total=342 [2021-11-20 23:17:19,828 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:19,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 81 Unchecked, 0.6s Time] [2021-11-20 23:17:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:17:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:17:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:17:19,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-20 23:17:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:19,831 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:17:19,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:17:19,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:17:19,834 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:17:19,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:20,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:20,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:20,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:20,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:17:32,799 WARN L227 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 414 DAG size of output: 185 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 23:17:32,801 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point L576(lines 576 602) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point L601(line 601) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point L595-1(lines 595 599) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L854 garLoopResultBuilder]: At program point L595-3(lines 595 599) the Hoare annotation is: (or (exists ((v_arrayElimCell_178 (_ BitVec 32)) (v_arrayElimCell_180 (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.base| (_ BitVec 32)) (|ULTIMATE.start_main_~list~0#1.offset| (_ BitVec 32)) (v_arrayElimCell_177 (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| v_arrayElimCell_177) v_arrayElimCell_178)) (.cse1 (= v_arrayElimCell_178 |ULTIMATE.start_main_~list~0#1.offset|)) (.cse2 (= v_arrayElimCell_177 |ULTIMATE.start_main_~list~0#1.base|))) (and (bvsle .cse0 (_ bv100 32)) (or (not .cse1) (not .cse2) (= .cse0 (bvmul (_ bv2 32) v_arrayElimCell_180))) (let ((.cse4 (= v_arrayElimCell_177 |ULTIMATE.start_main_~m~0#1.base|)) (.cse5 (= v_arrayElimCell_178 |ULTIMATE.start_main_~m~0#1.offset|)) (.cse3 (bvslt (select (select |#memory_int| |ULTIMATE.start_main_~m~0#1.base|) |ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)))) (or (and .cse3 (not .cse4)) (and .cse4 .cse5 (bvslt (bvadd (bvmul v_arrayElimCell_180 (_ bv4294967295 32)) .cse0) (_ bv100 32))) (and (not .cse5) .cse3))) (or (and .cse1 .cse2) (= v_arrayElimCell_180 (select (select |#memory_int| |ULTIMATE.start_main_~list~0#1.base|) |ULTIMATE.start_main_~list~0#1.offset|)))))) (bvslt (select (select |#memory_int| |ULTIMATE.start_main_~m~0#1.base|) |ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32))) [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point L595-4(lines 595 599) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:17:32,802 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 23:17:32,803 INFO L858 garLoopResultBuilder]: For program point L600(lines 600 601) no Hoare annotation was computed. [2021-11-20 23:17:32,803 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 601) no Hoare annotation was computed. [2021-11-20 23:17:32,803 INFO L858 garLoopResultBuilder]: For program point L596(lines 596 597) no Hoare annotation was computed. [2021-11-20 23:17:32,803 INFO L858 garLoopResultBuilder]: For program point L596-2(lines 596 597) no Hoare annotation was computed. [2021-11-20 23:17:32,803 INFO L858 garLoopResultBuilder]: For program point L586(lines 586 592) no Hoare annotation was computed. [2021-11-20 23:17:32,804 INFO L854 garLoopResultBuilder]: At program point L586-2(lines 584 593) the Hoare annotation is: (let ((.cse26 (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|)) (.cse12 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~list~0#1.base|)) (.cse28 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|)) (.cse29 (bvadd (_ bv4 32) |ULTIMATE.start_main_~head~0#1.offset|)) (.cse10 (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~list~0#1.base|)) (.cse30 (bvadd (_ bv8 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse1 (not (= |ULTIMATE.start_main_~list~0#1.base| |ULTIMATE.start_main_~m~0#1.base|))) (.cse24 (select .cse10 .cse30)) (.cse17 (select (select |#memory_int| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (.cse2 (= (select (select |#memory_int| |ULTIMATE.start_main_~m~0#1.base|) |ULTIMATE.start_main_~m~0#1.offset|) (_ bv0 32))) (.cse14 (select .cse28 .cse29)) (.cse23 (select .cse12 .cse30)) (.cse9 (select |#memory_int| |ULTIMATE.start_main_~list~0#1.base|)) (.cse16 (select .cse26 .cse29))) (or (and (exists ((v_arrayElimCell_112 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg v_arrayElimCell_112)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse0)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |#valid| |ULTIMATE.start_main_~list~0#1.base|)))))) .cse1 .cse2 (exists ((v_arrayElimCell_113 (_ BitVec 1)) (v_arrayElimCell_118 (_ BitVec 1))) (let ((.cse3 (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_113))))))) (.cse4 (bvneg v_arrayElimCell_118))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg .cse3)))) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg .cse4)))) .cse3)) (= (_ bv0 1) (bvadd .cse4 (select |#valid| |ULTIMATE.start_main_~m~0#1.base|)))))) (exists ((|v_ULTIMATE.start_main_~n~0#1.base_21| (_ BitVec 32)) (v_arrayElimCell_119 (_ BitVec 1)) (|ULTIMATE.start_main_~n~0#1.base| (_ BitVec 32))) (let ((.cse5 (bvneg v_arrayElimCell_119))) (and (not (= |ULTIMATE.start_main_~n~0#1.base| |v_ULTIMATE.start_main_~n~0#1.base_21|)) (not (= |ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_~n~0#1.base_21|)) (not (= |ULTIMATE.start_main_~list~0#1.base| |ULTIMATE.start_main_~n~0#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |#valid| |ULTIMATE.start_main_~n~0#1.base|))))) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg .cse5)) (_ bv1 1))) (not (= |ULTIMATE.start_main_~m~0#1.base| |ULTIMATE.start_main_~n~0#1.base|)) (not (= |ULTIMATE.start_main_~m~0#1.base| |v_ULTIMATE.start_main_~n~0#1.base_21|)) (= (_ bv0 1) (bvadd (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_21|) .cse5)))))) (and (exists ((|ULTIMATE.start_main_~n~0#1.base| (_ BitVec 32))) (and (not (= |ULTIMATE.start_main_~list~0#1.base| |ULTIMATE.start_main_~n~0#1.base|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |#valid| |ULTIMATE.start_main_~n~0#1.base|))))) (_ bv1 1))) (not (= |ULTIMATE.start_main_~m~0#1.base| |ULTIMATE.start_main_~n~0#1.base|)))) (bvslt (select (select (let ((.cse11 (bvadd (_ bv4 32) |ULTIMATE.start_main_~list~0#1.offset|))) (let ((.cse6 (select .cse12 .cse11))) (store |#memory_int| .cse6 (let ((.cse7 (select |#memory_int| .cse6)) (.cse8 (select .cse10 .cse11))) (store .cse7 .cse8 (bvadd (select .cse7 .cse8) (select .cse9 |ULTIMATE.start_main_~list~0#1.offset|))))))) |ULTIMATE.start_main_~m~0#1.base|) |ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) .cse1 (exists ((v_arrayElimCell_113 (_ BitVec 1))) (let ((.cse13 (bvneg (bvneg v_arrayElimCell_113)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg .cse13)))))))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse13 (bvneg (select |#valid| |ULTIMATE.start_main_~m~0#1.base|))))))) .cse2 (bvslt (select (select (store |#memory_int| .cse14 (let ((.cse15 (select |#memory_int| .cse14))) (store .cse15 .cse16 (bvadd (select .cse15 .cse16) .cse17)))) |ULTIMATE.start_main_~m~0#1.base|) |ULTIMATE.start_main_~m~0#1.offset|) (_ bv100 32)) (exists ((v_arrayElimCell_112 (_ BitVec 1))) (let ((.cse18 (bvneg v_arrayElimCell_112))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg .cse18))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse18 (select |#valid| |ULTIMATE.start_main_~list~0#1.base|)))))) (let ((.cse19 (select (select (let ((.cse25 (bvadd .cse24 (_ bv4 32)))) (let ((.cse20 (select (select |#memory_$Pointer$.base| .cse23) .cse25))) (store |#memory_int| .cse20 (let ((.cse21 (select |#memory_int| .cse20)) (.cse22 (select (select |#memory_$Pointer$.offset| .cse23) .cse25))) (store .cse21 .cse22 (bvadd (select .cse21 .cse22) (select (select |#memory_int| .cse23) .cse24))))))) |ULTIMATE.start_main_~m~0#1.base|) |ULTIMATE.start_main_~m~0#1.offset|))) (or (bvslt .cse19 (_ bv100 32)) (= (_ bv100 32) .cse19)))) (let ((.cse27 (bvadd (_ bv8 32) |ULTIMATE.start_main_~head~0#1.offset|))) (and (= |ULTIMATE.start_main_~m~0#1.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (select |#valid| |ULTIMATE.start_main_~m~0#1.base|)) (_ bv1 1))) (= (_ bv0 32) |ULTIMATE.start_main_~head~0#1.offset|) (= (select .cse26 .cse27) |ULTIMATE.start_main_~head~0#1.offset|) (= (select .cse12 (_ bv4 32)) |ULTIMATE.start_main_~m~0#1.base|) (= .cse24 |ULTIMATE.start_main_~list~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.base| (select .cse28 .cse27)) (= .cse17 (_ bv1 32)) .cse2 (= .cse14 |ULTIMATE.start_main_~m~0#1.base|) (= |ULTIMATE.start_main_~m~0#1.offset| (select .cse10 (_ bv4 32))) (= |ULTIMATE.start_main_~list~0#1.base| .cse23) (= |ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |#valid| |ULTIMATE.start_main_~list~0#1.base|)))))))) (_ bv1 1))) (= (select .cse9 (_ bv0 32)) (_ bv1 32)) (= |ULTIMATE.start_main_~m~0#1.offset| .cse16)))))) [2021-11-20 23:17:32,804 INFO L858 garLoopResultBuilder]: For program point L584-2(lines 584 593) no Hoare annotation was computed. [2021-11-20 23:17:32,807 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2021-11-20 23:17:32,809 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:17:32,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,821 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,821 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,821 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,821 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,831 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,831 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,831 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,832 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,832 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,832 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,832 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,832 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,833 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,833 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,833 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,833 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,838 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:456) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:17:32,841 INFO L158 Benchmark]: Toolchain (without parser) took 270277.13ms. Allocated memory was 50.3MB in the beginning and 79.7MB in the end (delta: 29.4MB). Free memory was 24.6MB in the beginning and 26.2MB in the end (delta: -1.5MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,842 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 50.3MB. Free memory was 29.6MB in the beginning and 29.6MB in the end (delta: 51.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.30ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 24.4MB in the beginning and 39.3MB in the end (delta: -14.9MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.70ms. Allocated memory is still 65.0MB. Free memory was 39.1MB in the beginning and 37.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,842 INFO L158 Benchmark]: Boogie Preprocessor took 33.33ms. Allocated memory is still 65.0MB. Free memory was 37.2MB in the beginning and 35.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,843 INFO L158 Benchmark]: RCFGBuilder took 879.24ms. Allocated memory is still 65.0MB. Free memory was 35.5MB in the beginning and 35.4MB in the end (delta: 165.1kB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,843 INFO L158 Benchmark]: TraceAbstraction took 268744.54ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.1MB in the beginning and 26.2MB in the end (delta: 8.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2021-11-20 23:17:32,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 50.3MB. Free memory was 29.6MB in the beginning and 29.6MB in the end (delta: 51.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.30ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 24.4MB in the beginning and 39.3MB in the end (delta: -14.9MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.70ms. Allocated memory is still 65.0MB. Free memory was 39.1MB in the beginning and 37.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.33ms. Allocated memory is still 65.0MB. Free memory was 37.2MB in the beginning and 35.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 879.24ms. Allocated memory is still 65.0MB. Free memory was 35.5MB in the beginning and 35.4MB in the end (delta: 165.1kB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 268744.54ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.1MB in the beginning and 26.2MB in the end (delta: 8.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 601]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 268.6s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 71.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 564 SdHoareTripleChecker+Invalid, 15.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 548 IncrementalHoareTripleChecker+Unchecked, 439 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 125 mSDtfsCounter, 296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 563 GetRequests, 389 SyntacticMatches, 43 SemanticMatches, 131 ConstructedPredicates, 23 IntricatePredicates, 6 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 149.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=6, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 781 HoareAnnotationTreeSize, 2 FomulaSimplifications, 1016 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3449 FormulaSimplificationTreeSizeReductionInter, 12.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 172.9s InterpolantComputationTime, 281 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 522 ConstructedInterpolants, 125 QuantifiedInterpolants, 37084 SizeOfPredicates, 258 NumberOfNonLiveVariables, 1349 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 40 InterpolantComputations, 4 PerfectInterpolantSequences, 74/246 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 595]: Loop Invariant [2021-11-20 23:17:32,857 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,858 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,858 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,858 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,858 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,858 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,859 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,859 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,859 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,859 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,859 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,860 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,860 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,860 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,860 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,860 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,861 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,861 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,861 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,861 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,861 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,862 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,862 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,865 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_178,QUANTIFIED] [2021-11-20 23:17:32,866 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] [2021-11-20 23:17:32,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_177,QUANTIFIED] [2021-11-20 23:17:32,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_arrayElimCell_180,QUANTIFIED] [2021-11-20 23:17:32,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.base,QUANTIFIED] [2021-11-20 23:17:32,867 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~list~0#1.offset,QUANTIFIED] Derived loop invariant: (\exists v_arrayElimCell_178 : bv32, v_arrayElimCell_180 : bv32, ULTIMATE.start_main_~list~0#1.base : bv32, ULTIMATE.start_main_~list~0#1.offset : bv32, v_arrayElimCell_177 : bv32 :: ((~bvsle32(unknown-#memory_int-unknown[v_arrayElimCell_177][v_arrayElimCell_178], 100bv32) && ((!(v_arrayElimCell_178 == ULTIMATE.start_main_~list~0#1.offset) || !(v_arrayElimCell_177 == ULTIMATE.start_main_~list~0#1.base)) || unknown-#memory_int-unknown[v_arrayElimCell_177][v_arrayElimCell_178] == ~bvmul32(2bv32, v_arrayElimCell_180))) && (((~bvslt32(unknown-#memory_int-unknown[m][m], 100bv32) && !(v_arrayElimCell_177 == m)) || ((v_arrayElimCell_177 == m && v_arrayElimCell_178 == m) && ~bvslt32(~bvadd64(~bvmul32(v_arrayElimCell_180, 4294967295bv32), unknown-#memory_int-unknown[v_arrayElimCell_177][v_arrayElimCell_178]), 100bv32))) || (!(v_arrayElimCell_178 == m) && ~bvslt32(unknown-#memory_int-unknown[m][m], 100bv32)))) && ((v_arrayElimCell_178 == ULTIMATE.start_main_~list~0#1.offset && v_arrayElimCell_177 == ULTIMATE.start_main_~list~0#1.base) || v_arrayElimCell_180 == unknown-#memory_int-unknown[ULTIMATE.start_main_~list~0#1.base][ULTIMATE.start_main_~list~0#1.offset])) || ~bvslt32(unknown-#memory_int-unknown[m][m], 100bv32) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-20 23:17:33,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd42173d-76df-4497-97ff-b60c90c1d076/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 1) (_ BitVec 1)) not yet implemented, please contact Matthias