./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur --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 d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:21:09,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:21:09,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:21:09,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:21:09,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:21:09,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:21:09,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:21:09,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:21:09,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:21:09,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:21:09,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:21:09,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:21:09,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:21:09,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:21:09,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:21:09,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:21:09,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:21:09,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:21:09,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:21:09,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:21:09,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:21:09,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:21:09,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:21:09,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:21:09,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:21:09,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:21:09,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:21:09,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:21:09,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:21:09,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:21:09,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:21:09,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:21:09,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:21:09,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:21:09,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:21:09,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:21:09,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:21:09,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:21:09,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:21:09,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:21:09,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:21:09,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:21:09,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:21:09,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:21:09,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:21:09,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:21:09,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:21:09,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:21:09,840 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:21:09,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:21:09,840 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:21:09,841 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:21:09,841 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:21:09,859 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:21:09,859 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:21:09,859 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:21:09,859 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:21:09,860 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:21:09,860 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:21:09,860 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:21:09,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:21:09,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:21:09,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:21:09,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:21:09,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:21:09,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:21:09,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:21:09,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:21:09,862 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:21:09,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:21:09,863 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:21:09,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:21:09,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:21:09,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:21:09,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:21:09,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:21:09,864 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:21:09,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:21:09,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:21:09,864 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:21:09,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:21:09,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:21:09,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:21:09,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2022-11-25 22:21:10,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:21:10,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:21:10,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:21:10,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:21:10,174 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:21:10,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/heap-data/packet_filter.i [2022-11-25 22:21:13,240 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:21:13,601 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:21:13,601 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/sv-benchmarks/c/heap-data/packet_filter.i [2022-11-25 22:21:13,613 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/data/a24a356fd/ec0a0b2d804d41f882bcd1e85660558f/FLAGa203d9b90 [2022-11-25 22:21:13,628 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/data/a24a356fd/ec0a0b2d804d41f882bcd1e85660558f [2022-11-25 22:21:13,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:21:13,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:21:13,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:21:13,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:21:13,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:21:13,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:21:13" (1/1) ... [2022-11-25 22:21:13,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b67ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:13, skipping insertion in model container [2022-11-25 22:21:13,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:21:13" (1/1) ... [2022-11-25 22:21:13,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:21:13,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:21:14,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_charp [2022-11-25 22:21:14,026 WARN L237 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_524c5798-b43b-4fa1-831c-091c2b0752bb/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-25 22:21:14,040 WARN L237 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_524c5798-b43b-4fa1-831c-091c2b0752bb/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-25 22:21:14,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:21:14,067 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:21:14,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_charp [2022-11-25 22:21:14,104 WARN L237 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_524c5798-b43b-4fa1-831c-091c2b0752bb/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-25 22:21:14,106 WARN L237 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_524c5798-b43b-4fa1-831c-091c2b0752bb/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-25 22:21:14,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:21:14,137 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:21:14,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14 WrapperNode [2022-11-25 22:21:14,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:21:14,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:21:14,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:21:14,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:21:14,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,188 INFO L138 Inliner]: procedures = 130, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2022-11-25 22:21:14,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:21:14,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:21:14,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:21:14,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:21:14,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:21:14,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:21:14,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:21:14,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:21:14,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (1/1) ... [2022-11-25 22:21:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:21:14,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:14,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:21:14,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:21:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:21:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:21:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:21:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:21:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2022-11-25 22:21:14,319 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2022-11-25 22:21:14,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:21:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:21:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:21:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2022-11-25 22:21:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure send [2022-11-25 22:21:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2022-11-25 22:21:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:21:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:21:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:21:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:21:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:21:14,452 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:21:14,455 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:21:14,983 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:21:15,095 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:21:15,096 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 22:21:15,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:21:15 BoogieIcfgContainer [2022-11-25 22:21:15,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:21:15,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:21:15,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:21:15,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:21:15,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:21:13" (1/3) ... [2022-11-25 22:21:15,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cb955a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:21:15, skipping insertion in model container [2022-11-25 22:21:15,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:21:14" (2/3) ... [2022-11-25 22:21:15,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cb955a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:21:15, skipping insertion in model container [2022-11-25 22:21:15,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:21:15" (3/3) ... [2022-11-25 22:21:15,114 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2022-11-25 22:21:15,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:21:15,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:21:15,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:21:15,192 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dae9e3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:21:15,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:21:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 22:21:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:21:15,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:15,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 22:21:15,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:15,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:15,219 INFO L85 PathProgramCache]: Analyzing trace with hash 297298087, now seen corresponding path program 1 times [2022-11-25 22:21:15,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:15,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299504742] [2022-11-25 22:21:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:15,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:15,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299504742] [2022-11-25 22:21:15,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299504742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:15,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:15,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:21:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383720988] [2022-11-25 22:21:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:15,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:21:15,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:21:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:21:15,511 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:15,604 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-11-25 22:21:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:21:15,607 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 22:21:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:15,614 INFO L225 Difference]: With dead ends: 51 [2022-11-25 22:21:15,614 INFO L226 Difference]: Without dead ends: 32 [2022-11-25 22:21:15,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:21:15,620 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:15,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:21:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-25 22:21:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-25 22:21:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 22:21:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-25 22:21:15,659 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 6 [2022-11-25 22:21:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:15,660 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-25 22:21:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-25 22:21:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:21:15,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:15,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:21:15,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:21:15,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash -350648386, now seen corresponding path program 1 times [2022-11-25 22:21:15,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:15,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759363468] [2022-11-25 22:21:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:15,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:15,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:15,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759363468] [2022-11-25 22:21:15,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759363468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:15,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:15,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:21:15,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602836799] [2022-11-25 22:21:15,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:15,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:21:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:21:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:21:15,914 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:16,090 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-25 22:21:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:21:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 22:21:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:16,093 INFO L225 Difference]: With dead ends: 58 [2022-11-25 22:21:16,093 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 22:21:16,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:21:16,095 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:16,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:21:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 22:21:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-25 22:21:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 22:21:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-25 22:21:16,105 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 7 [2022-11-25 22:21:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:16,105 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-25 22:21:16,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-25 22:21:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:21:16,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:16,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:21:16,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:21:16,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2014810633, now seen corresponding path program 1 times [2022-11-25 22:21:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509281757] [2022-11-25 22:21:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:16,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:16,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509281757] [2022-11-25 22:21:16,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509281757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:16,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:16,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:21:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693850498] [2022-11-25 22:21:16,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:16,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:21:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:16,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:21:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:21:16,227 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:16,367 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-11-25 22:21:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:21:16,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 22:21:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:16,369 INFO L225 Difference]: With dead ends: 46 [2022-11-25 22:21:16,369 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 22:21:16,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:21:16,370 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:16,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:21:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 22:21:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-25 22:21:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 22:21:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-25 22:21:16,377 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2022-11-25 22:21:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:16,378 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-25 22:21:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-25 22:21:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:21:16,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:16,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:21:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:21:16,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 898291988, now seen corresponding path program 1 times [2022-11-25 22:21:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676401649] [2022-11-25 22:21:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:17,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:17,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676401649] [2022-11-25 22:21:17,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676401649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:21:17,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304417402] [2022-11-25 22:21:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:17,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:17,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:17,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:17,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:21:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:17,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-25 22:21:17,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:17,365 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:21:17,366 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:21:17,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:17,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:21:17,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:17,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:21:17,483 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 22:21:17,483 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 22 [2022-11-25 22:21:17,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 22:21:17,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 22:21:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:17,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:17,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304417402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1924858430] [2022-11-25 22:21:17,858 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-25 22:21:17,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:21:17,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:21:17,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:21:17,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:21:17,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:17,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:17,965 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 22:21:17,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-25 22:21:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:17,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-25 22:21:18,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-25 22:21:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,559 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-25 22:21:18,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-25 22:21:18,671 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-25 22:21:18,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 50 [2022-11-25 22:21:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:18,761 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 22:21:18,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 55 [2022-11-25 22:21:19,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-25 22:21:19,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-25 22:21:19,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:19,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:19,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-25 22:21:19,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:19,700 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-25 22:21:19,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 65 [2022-11-25 22:21:19,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:21:21,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1924858430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:21,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:21:21,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 10 [2022-11-25 22:21:21,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977837198] [2022-11-25 22:21:21,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:21,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:21:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:21:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:21:21,166 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:21,574 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-25 22:21:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:21:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 [2022-11-25 22:21:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:21,575 INFO L225 Difference]: With dead ends: 67 [2022-11-25 22:21:21,576 INFO L226 Difference]: Without dead ends: 51 [2022-11-25 22:21:21,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:21:21,577 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:21,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:21:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-25 22:21:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2022-11-25 22:21:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 22:21:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-25 22:21:21,589 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 11 [2022-11-25 22:21:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:21,589 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-25 22:21:21,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:21:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-25 22:21:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 22:21:21,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:21,590 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:21:21,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 22:21:21,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:21,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2077256563, now seen corresponding path program 1 times [2022-11-25 22:21:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:21,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354270938] [2022-11-25 22:21:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:22,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:22,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354270938] [2022-11-25 22:21:22,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354270938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:21:22,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361831959] [2022-11-25 22:21:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:22,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:22,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:22,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:22,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:21:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:22,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 22:21:22,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:22,313 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:21:22,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:21:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:21:22,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:21:22,371 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 22:21:22,371 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 22 [2022-11-25 22:21:22,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 22:21:22,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 22:21:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:22,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:22,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361831959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:22,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439719727] [2022-11-25 22:21:22,622 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-25 22:21:22,622 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:21:22,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:21:22,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:21:22,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:21:22,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,690 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 22:21:22,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-25 22:21:22,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-25 22:21:22,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-25 22:21:22,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:22,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,080 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-25 22:21:23,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-25 22:21:23,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:23,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-25 22:21:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-25 22:21:23,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-25 22:21:23,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,848 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-25 22:21:23,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-25 22:21:23,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,932 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:21:23,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-25 22:21:23,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:23,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:24,025 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:21:24,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 47 [2022-11-25 22:21:24,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:24,081 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:21:24,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-25 22:21:24,298 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:21:25,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1439719727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:25,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:21:25,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 11 [2022-11-25 22:21:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983350320] [2022-11-25 22:21:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:25,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:21:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:21:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:21:25,834 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2022-11-25 22:21:26,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:26,684 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-11-25 22:21:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:21:26,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) Word has length 12 [2022-11-25 22:21:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:26,689 INFO L225 Difference]: With dead ends: 55 [2022-11-25 22:21:26,689 INFO L226 Difference]: Without dead ends: 43 [2022-11-25 22:21:26,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:21:26,690 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:26,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 81 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:21:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-25 22:21:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-11-25 22:21:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 22:21:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-25 22:21:26,698 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 12 [2022-11-25 22:21:26,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:26,699 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-25 22:21:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2022-11-25 22:21:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-25 22:21:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 22:21:26,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:26,701 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:21:26,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:26,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:26,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -279614113, now seen corresponding path program 1 times [2022-11-25 22:21:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:26,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594545710] [2022-11-25 22:21:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:28,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:28,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594545710] [2022-11-25 22:21:28,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594545710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:21:28,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305066591] [2022-11-25 22:21:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:28,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:28,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:28,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_524c5798-b43b-4fa1-831c-091c2b0752bb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:21:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:28,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-25 22:21:28,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:28,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-25 22:21:28,573 INFO L321 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2022-11-25 22:21:28,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2022-11-25 22:21:28,613 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-25 22:21:28,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-25 22:21:28,651 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-25 22:21:28,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-25 22:21:28,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 22:21:28,717 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-25 22:21:28,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 60 [2022-11-25 22:21:28,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 22:21:28,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 22:21:28,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 22:21:28,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:21:28,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:21:28,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 5 [2022-11-25 22:21:28,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:21:29,000 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-25 22:21:29,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 96 [2022-11-25 22:21:29,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2022-11-25 22:21:29,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 39 [2022-11-25 22:21:29,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:29,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:29,304 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 14 [2022-11-25 22:21:29,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:21:29,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:21:29,399 INFO L350 Elim1Store]: Elim1 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 71 treesize of output 55 [2022-11-25 22:21:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:29,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:29,943 INFO L321 Elim1Store]: treesize reduction 41, result has 62.0 percent of original size [2022-11-25 22:21:29,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 91 [2022-11-25 22:21:29,967 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-25 22:21:29,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 93 treesize of output 77 [2022-11-25 22:21:29,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-11-25 22:21:30,168 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2022-11-25 22:21:30,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 1 [2022-11-25 22:21:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:21:30,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305066591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:30,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1195191979] [2022-11-25 22:21:30,287 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-25 22:21:30,287 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:21:30,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:21:30,288 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:21:30,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:21:30,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,351 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 22:21:30,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-25 22:21:30,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-25 22:21:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-25 22:21:30,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-25 22:21:30,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-25 22:21:30,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:30,836 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-25 22:21:30,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-25 22:21:31,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:31,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:31,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:31,666 INFO L217 Elim1Store]: Index analysis took 102 ms [2022-11-25 22:22:02,125 WARN L233 SmtUtils]: Spent 30.29s on a formula simplification. DAG size of input: 272 DAG size of output: 179 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 22:22:02,126 INFO L321 Elim1Store]: treesize reduction 744, result has 48.6 percent of original size [2022-11-25 22:22:02,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 42 case distinctions, treesize of input 17346246 treesize of output 2913182 [2022-11-25 22:22:14,187 WARN L233 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 1409 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:22:26,090 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification that was a NOOP. DAG size: 1404 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:22:26,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:26,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:26,937 INFO L217 Elim1Store]: Index analysis took 113 ms [2022-11-25 22:22:27,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2022-11-25 22:22:38,596 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification that was a NOOP. DAG size: 1402 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:22:49,925 WARN L233 SmtUtils]: Spent 11.32s on a formula simplification that was a NOOP. DAG size: 1399 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:22:50,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:50,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:50,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:50,582 INFO L217 Elim1Store]: Index analysis took 103 ms [2022-11-25 22:22:50,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-25 22:23:02,128 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification that was a NOOP. DAG size: 1401 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:23:13,427 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification that was a NOOP. DAG size: 1393 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:23:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:23:14,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:23:14,018 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 17 [2022-11-25 22:23:25,272 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification that was a NOOP. DAG size: 1392 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:23:50,360 WARN L233 SmtUtils]: Spent 13.42s on a formula simplification that was a NOOP. DAG size: 1381 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:23:50,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:23:51,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:23:51,092 INFO L217 Elim1Store]: Index analysis took 183 ms [2022-11-25 22:23:53,252 INFO L321 Elim1Store]: treesize reduction 84, result has 43.6 percent of original size [2022-11-25 22:23:53,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 77 [2022-11-25 22:24:06,271 WARN L233 SmtUtils]: Spent 13.02s on a formula simplification that was a NOOP. DAG size: 1386 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:24:30,142 WARN L233 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:24:30,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:24:30,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 22:24:42,756 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:25:07,365 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification that was a NOOP. DAG size: 1364 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:25:19,941 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 1360 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:25:20,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:20,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2022-11-25 22:25:33,323 WARN L233 SmtUtils]: Spent 12.70s on a formula simplification that was a NOOP. DAG size: 1356 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:25:45,543 WARN L233 SmtUtils]: Spent 12.21s on a formula simplification that was a NOOP. DAG size: 1350 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:25:46,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:25:47,301 INFO L321 Elim1Store]: treesize reduction 228, result has 50.1 percent of original size [2022-11-25 22:25:47,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 286 treesize of output 400 [2022-11-25 22:25:59,422 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:26:12,265 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification that was a NOOP. DAG size: 1417 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:26:13,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:13,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:13,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:13,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-25 22:26:13,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:13,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-25 22:26:13,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:13,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:13,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:26:13,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-25 22:26:13,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:13,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:13,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-25 22:26:38,968 WARN L233 SmtUtils]: Spent 12.31s on a formula simplification that was a NOOP. DAG size: 1200 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:26:58,106 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 933 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 22:29:23,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:23,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:29:23,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 121 [2022-11-25 22:29:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:23,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:23,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30