./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta --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 4fb6aa6206205a747f158782e93b3c9333c1a2cdc4e8dab70046fca960e31961 --- 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-dbf71c6-m [2022-10-17 17:21:43,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:21:43,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:21:43,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:21:43,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:21:43,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:21:43,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:21:43,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:21:43,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:21:43,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:21:43,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:21:43,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:21:43,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:21:43,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:21:43,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:21:43,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:21:43,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:21:43,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:21:43,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:21:43,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:21:43,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:21:43,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:21:43,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:21:43,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:21:43,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:21:43,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:21:43,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:21:43,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:21:43,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:21:43,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:21:43,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:21:43,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:21:43,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:21:43,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:21:43,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:21:43,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:21:43,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:21:43,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:21:43,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:21:43,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:21:43,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:21:43,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:21:43,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:21:43,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:21:43,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:21:43,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:21:43,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:21:43,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:21:43,882 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:21:43,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:21:43,882 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:21:43,883 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:21:43,884 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:21:43,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:21:43,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:21:43,885 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:21:43,885 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:21:43,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:21:43,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:21:43,886 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:21:43,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:21:43,887 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:21:43,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:21:43,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:21:43,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:21:43,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:21:43,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:21:43,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:21:43,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:21:43,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:21:43,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:21:43,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:21:43,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:21:43,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:21:43,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:43,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:21:43,892 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:21:43,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:21:43,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:21:43,893 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:21:43,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:21:43,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:21:43,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:21:43,893 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_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb6aa6206205a747f158782e93b3c9333c1a2cdc4e8dab70046fca960e31961 [2022-10-17 17:21:44,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:21:44,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:21:44,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:21:44,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:21:44,228 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:21:44,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2022-10-17 17:21:44,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/data/e8892962c/1102770618d74a8185c191d268a06e1f/FLAGcfee0b829 [2022-10-17 17:21:44,794 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:21:44,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2022-10-17 17:21:44,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/data/e8892962c/1102770618d74a8185c191d268a06e1f/FLAGcfee0b829 [2022-10-17 17:21:45,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/data/e8892962c/1102770618d74a8185c191d268a06e1f [2022-10-17 17:21:45,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:21:45,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:21:45,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:45,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:21:45,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:21:45,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3596586e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45, skipping insertion in model container [2022-10-17 17:21:45,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:21:45,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:21:45,519 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2022-10-17 17:21:45,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:45,543 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:21:45,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2022-10-17 17:21:45,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:45,625 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:21:45,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45 WrapperNode [2022-10-17 17:21:45,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:45,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:45,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:21:45,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:21:45,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,702 INFO L138 Inliner]: procedures = 122, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-10-17 17:21:45,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:45,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:21:45,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:21:45,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:21:45,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:21:45,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:21:45,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:21:45,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:21:45,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (1/1) ... [2022-10-17 17:21:45,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:45,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:21:45,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:21:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-10-17 17:21:45,863 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-10-17 17:21:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:21:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:21:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:21:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:21:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:21:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:21:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:21:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:21:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:21:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:21:46,047 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:21:46,049 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:21:46,120 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-10-17 17:21:46,325 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:21:46,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:21:46,365 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 17:21:46,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:46 BoogieIcfgContainer [2022-10-17 17:21:46,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:21:46,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:21:46,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:21:46,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:21:46,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:21:45" (1/3) ... [2022-10-17 17:21:46,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6306ba8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:46, skipping insertion in model container [2022-10-17 17:21:46,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:45" (2/3) ... [2022-10-17 17:21:46,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6306ba8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:46, skipping insertion in model container [2022-10-17 17:21:46,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:46" (3/3) ... [2022-10-17 17:21:46,389 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2022-10-17 17:21:46,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:21:46,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:21:46,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:21:46,478 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;@7e094d6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:21:46,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:21:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:21:46,489 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:46,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:46,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1372459767, now seen corresponding path program 1 times [2022-10-17 17:21:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:46,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925812227] [2022-10-17 17:21:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:46,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:46,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925812227] [2022-10-17 17:21:46,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925812227] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:46,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:46,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:21:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46263146] [2022-10-17 17:21:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:46,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:46,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:46,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:46,979 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:47,030 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2022-10-17 17:21:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:21:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:47,039 INFO L225 Difference]: With dead ends: 38 [2022-10-17 17:21:47,040 INFO L226 Difference]: Without dead ends: 18 [2022-10-17 17:21:47,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:47,047 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:21:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-17 17:21:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-10-17 17:21:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-10-17 17:21:47,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2022-10-17 17:21:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:47,085 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-10-17 17:21:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-10-17 17:21:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:21:47,086 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:47,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:21:47,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1451408273, now seen corresponding path program 1 times [2022-10-17 17:21:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062379029] [2022-10-17 17:21:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:47,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062379029] [2022-10-17 17:21:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062379029] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:21:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548507304] [2022-10-17 17:21:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:47,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:47,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:21:47,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:21:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:47,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:21:47,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:21:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:47,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:21:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548507304] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:21:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [490154968] [2022-10-17 17:21:47,703 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-10-17 17:21:47,703 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:21:47,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:21:47,713 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:21:47,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:21:47,896 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:21:47,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-10-17 17:21:47,994 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:21:47,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:21:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 19 [2022-10-17 17:21:48,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 19 [2022-10-17 17:21:48,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2022-10-17 17:21:48,232 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-10-17 17:21:48,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2022-10-17 17:21:48,320 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-10-17 17:21:48,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-10-17 17:21:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-10-17 17:21:48,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-10-17 17:21:48,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-10-17 17:21:48,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-10-17 17:21:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:48,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2022-10-17 17:21:48,658 INFO L356 Elim1Store]: treesize reduction 48, result has 37.7 percent of original size [2022-10-17 17:21:48,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 46 [2022-10-17 17:21:48,772 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-10-17 17:21:48,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 65 [2022-10-17 17:21:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,104 INFO L356 Elim1Store]: treesize reduction 115, result has 10.2 percent of original size [2022-10-17 17:21:49,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 462 treesize of output 443 [2022-10-17 17:21:49,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,277 INFO L356 Elim1Store]: treesize reduction 108, result has 13.6 percent of original size [2022-10-17 17:21:49,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 463 treesize of output 428 [2022-10-17 17:21:49,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,456 INFO L356 Elim1Store]: treesize reduction 156, result has 18.3 percent of original size [2022-10-17 17:21:49,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 540 treesize of output 488 [2022-10-17 17:21:49,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,747 INFO L356 Elim1Store]: treesize reduction 450, result has 8.5 percent of original size [2022-10-17 17:21:49,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 502 treesize of output 462 [2022-10-17 17:21:49,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,872 INFO L356 Elim1Store]: treesize reduction 166, result has 13.1 percent of original size [2022-10-17 17:21:49,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 475 treesize of output 461 [2022-10-17 17:21:49,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:49,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:49,991 INFO L356 Elim1Store]: treesize reduction 234, result has 16.7 percent of original size [2022-10-17 17:21:49,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 585 treesize of output 498 [2022-10-17 17:21:50,379 INFO L356 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-10-17 17:21:50,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 524 treesize of output 530 [2022-10-17 17:21:50,568 INFO L356 Elim1Store]: treesize reduction 242, result has 17.1 percent of original size [2022-10-17 17:21:50,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 529 treesize of output 552 [2022-10-17 17:21:50,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:50,907 INFO L356 Elim1Store]: treesize reduction 50, result has 42.5 percent of original size [2022-10-17 17:21:50,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 37 [2022-10-17 17:21:50,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:50,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-10-17 17:21:50,957 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-10-17 17:21:50,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 71 [2022-10-17 17:21:50,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:50,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-10-17 17:21:51,008 INFO L356 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-10-17 17:21:51,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 107 [2022-10-17 17:21:51,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:21:51,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:21:51,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:51,213 INFO L356 Elim1Store]: treesize reduction 50, result has 42.5 percent of original size [2022-10-17 17:21:51,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 37 [2022-10-17 17:21:51,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:51,281 INFO L356 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-10-17 17:21:51,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 36 [2022-10-17 17:21:51,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:51,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-10-17 17:21:51,336 INFO L356 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-10-17 17:21:51,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 130 [2022-10-17 17:21:51,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:51,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:51,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-10-17 17:21:51,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:51,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-10-17 17:21:51,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:51,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2022-10-17 17:21:51,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:21:51,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:21:51,563 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:21:52,507 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '162#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (= |ULTIMATE.start_main_~data_new~0#1| 1) (<= 0 |#NULL.base|) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_main_~head~1#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_main_~ptr~0#1.offset|) (not (= |ULTIMATE.start_main_~data_init~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (<= |#NULL.base| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|))' at error location [2022-10-17 17:21:52,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:21:52,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:21:52,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-17 17:21:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503762766] [2022-10-17 17:21:52,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:21:52,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:21:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:21:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:21:52,511 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:52,559 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2022-10-17 17:21:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:21:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:21:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:52,561 INFO L225 Difference]: With dead ends: 34 [2022-10-17 17:21:52,561 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 17:21:52,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:21:52,563 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:52,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:21:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 17:21:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-10-17 17:21:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-10-17 17:21:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-10-17 17:21:52,568 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2022-10-17 17:21:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:52,568 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-10-17 17:21:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-10-17 17:21:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:21:52,570 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:52,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:52,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:21:52,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-17 17:21:52,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2044865783, now seen corresponding path program 2 times [2022-10-17 17:21:52,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:52,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855792333] [2022-10-17 17:21:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:52,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:21:53,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:53,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855792333] [2022-10-17 17:21:53,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855792333] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:21:53,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367509025] [2022-10-17 17:21:53,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:21:53,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:53,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:21:53,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:21:55,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-17 17:21:55,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:21:55,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-17 17:21:55,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:21:55,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:21:55,253 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 17:21:55,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 17:21:55,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-10-17 17:21:55,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2022-10-17 17:21:55,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:21:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:21:55,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:21:56,951 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_371 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_ArrVal_371)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|)) is different from false [2022-10-17 17:21:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 4 not checked. [2022-10-17 17:21:57,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367509025] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:21:57,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [293662277] [2022-10-17 17:21:57,300 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-10-17 17:21:57,300 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:21:57,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:21:57,301 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:21:57,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:21:57,351 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:21:57,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:21:57,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-10-17 17:21:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 19 [2022-10-17 17:21:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 19 [2022-10-17 17:21:57,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2022-10-17 17:21:57,510 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-10-17 17:21:57,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2022-10-17 17:21:57,595 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-10-17 17:21:57,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-10-17 17:21:57,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2022-10-17 17:21:57,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-10-17 17:21:57,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-10-17 17:21:57,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:57,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-10-17 17:21:57,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-10-17 17:21:57,870 INFO L356 Elim1Store]: treesize reduction 90, result has 35.3 percent of original size [2022-10-17 17:21:57,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 43 treesize of output 77 [2022-10-17 17:21:57,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 44 [2022-10-17 17:21:58,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,167 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-10-17 17:21:58,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 504 treesize of output 485 [2022-10-17 17:21:58,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,308 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-10-17 17:21:58,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 505 treesize of output 428 [2022-10-17 17:21:58,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,434 INFO L356 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-10-17 17:21:58,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 550 treesize of output 504 [2022-10-17 17:21:58,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,526 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-10-17 17:21:58,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 547 treesize of output 457 [2022-10-17 17:21:58,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:58,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,614 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-10-17 17:21:58,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 439 treesize of output 425 [2022-10-17 17:21:58,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:58,724 INFO L356 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2022-10-17 17:21:58,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 525 treesize of output 467 [2022-10-17 17:21:59,137 INFO L356 Elim1Store]: treesize reduction 234, result has 19.9 percent of original size [2022-10-17 17:21:59,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 529 treesize of output 560 [2022-10-17 17:21:59,193 INFO L356 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-10-17 17:21:59,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 524 treesize of output 530 [2022-10-17 17:21:59,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-10-17 17:21:59,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 17 [2022-10-17 17:21:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-10-17 17:21:59,539 INFO L356 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-10-17 17:21:59,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 91 [2022-10-17 17:21:59,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:21:59,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:21:59,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-10-17 17:21:59,719 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-10-17 17:21:59,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 118 [2022-10-17 17:21:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 17 [2022-10-17 17:21:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-10-17 17:21:59,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:21:59,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-10-17 17:21:59,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 9 [2022-10-17 17:21:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:21:59,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2022-10-17 17:21:59,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:21:59,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:21:59,968 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:22:01,167 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '376#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (= |ULTIMATE.start_main_~data_new~0#1| 1) (<= 0 |#NULL.base|) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_main_~head~1#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_main_~ptr~0#1.offset|) (not (= |ULTIMATE.start_main_~data_init~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (<= |#NULL.base| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|))' at error location [2022-10-17 17:22:01,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:22:01,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:22:01,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-10-17 17:22:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489428451] [2022-10-17 17:22:01,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:22:01,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 17:22:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 17:22:01,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=584, Unknown=1, NotChecked=50, Total=756 [2022-10-17 17:22:01,170 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:22:01,786 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (and (= |c_ULTIMATE.start_main_~data_init~0#1| |c_ULTIMATE.start_dll_circular_create_~data#1|) (= |c_ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (or (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| (+ 8 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))) (= 0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (not (= .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|)) (= |c_ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= (select |c_#valid| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|)) (forall ((v_ArrVal_371 Int) (|ULTIMATE.start_dll_circular_create_~last~0#1.base| Int)) (= (select (select (store |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) .cse0 v_ArrVal_371)) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_main_~data_init~0#1|)))) is different from false [2022-10-17 17:22:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:01,919 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-10-17 17:22:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:22:01,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 17:22:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:01,921 INFO L225 Difference]: With dead ends: 29 [2022-10-17 17:22:01,921 INFO L226 Difference]: Without dead ends: 27 [2022-10-17 17:22:01,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=162, Invalid=774, Unknown=2, NotChecked=118, Total=1056 [2022-10-17 17:22:01,923 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:01,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 101 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-10-17 17:22:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-17 17:22:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-10-17 17:22:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:22:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-10-17 17:22:01,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2022-10-17 17:22:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:01,934 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-10-17 17:22:01,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:22:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-10-17 17:22:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:22:01,935 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:01,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:01,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:22:02,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:02,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1220729213, now seen corresponding path program 1 times [2022-10-17 17:22:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:02,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856918301] [2022-10-17 17:22:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:22:04,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856918301] [2022-10-17 17:22:04,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856918301] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:22:04,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881665402] [2022-10-17 17:22:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:04,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:04,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:04,262 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:22:04,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1214ffa4-5a04-4b18-b7bf-1af7f5ef3c9f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:22:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:04,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 93 conjunts are in the unsatisfiable core [2022-10-17 17:22:04,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:22:04,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:22:04,513 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:04,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:22:04,578 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:04,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:22:04,700 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:22:04,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-10-17 17:22:04,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-17 17:22:04,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 17:22:04,893 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-10-17 17:22:04,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-10-17 17:22:04,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-10-17 17:22:04,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-10-17 17:22:05,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-10-17 17:22:05,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:05,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2022-10-17 17:22:05,029 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:22:05,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 56 [2022-10-17 17:22:05,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 30 [2022-10-17 17:22:05,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-10-17 17:22:05,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:05,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2022-10-17 17:22:05,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:05,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-10-17 17:22:05,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-10-17 17:22:05,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-10-17 17:22:05,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-17 17:22:05,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-10-17 17:22:05,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-10-17 17:22:05,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 17:22:05,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-17 17:22:05,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:22:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:22:05,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:22:05,332 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_641 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~ptr~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~ptr~0#1.base| v_ArrVal_641) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~ptr~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~ptr~0#1.base|) .cse0))) |c_ULTIMATE.start_main_~data_init~0#1|)) is different from false [2022-10-17 17:22:05,346 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array Int Int)) (v_ArrVal_637 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_641 (Array Int Int))) (= (let ((.cse0 (+ 4 |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_639) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_641) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_633) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| v_ArrVal_637) |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) .cse0))) |c_ULTIMATE.start_main_~data_init~0#1|)) is different from false [2022-10-17 17:22:05,365 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:22:05,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 86 [2022-10-17 17:22:05,376 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:22:05,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 85 [2022-10-17 17:22:05,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 262 [2022-10-17 17:22:05,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-10-17 17:22:05,413 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:22:05,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 254 treesize of output 220 [2022-10-17 17:22:05,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 194 [2022-10-17 17:22:05,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 696 treesize of output 666 [2022-10-17 17:22:05,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 662 treesize of output 630 [2022-10-17 17:22:05,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 630 treesize of output 614