./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test27-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test27-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7 --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 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:47:33,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:47:33,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:47:33,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:47:33,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:47:33,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:47:33,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:47:33,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:47:33,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:47:33,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:47:33,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:47:33,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:47:33,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:47:33,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:47:33,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:47:33,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:47:33,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:47:33,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:47:33,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:47:33,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:47:33,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:47:33,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:47:33,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:47:33,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:47:33,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:47:33,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:47:33,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:47:33,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:47:33,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:47:33,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:47:33,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:47:33,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:47:33,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:47:33,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:47:33,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:47:33,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:47:33,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:47:33,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:47:33,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:47:33,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:47:33,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:47:33,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:47:33,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:47:33,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:47:33,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:47:33,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:47:33,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:47:33,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:47:33,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:47:33,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:47:33,953 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:47:33,953 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:47:33,953 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:47:33,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:47:33,954 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:47:33,954 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:47:33,954 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:47:33,954 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:47:33,955 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:47:33,955 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:47:33,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:47:33,956 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:47:33,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:47:33,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:47:33,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:47:33,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:47:33,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:47:33,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:47:33,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:47:33,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:47:33,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:47:33,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:47:33,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:47:33,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:47:33,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:47:33,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:47:33,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:47:33,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:47:33,959 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:47:33,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:47:33,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:47:33,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:47:33,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:47:33,960 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da [2021-11-25 18:47:34,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:47:34,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:47:34,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:47:34,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:47:34,252 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:47:34,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-regression/test27-2.c [2021-11-25 18:47:34,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/data/a191cf29a/fa7b71e5604e4314a778510d78553ce9/FLAGfeae79499 [2021-11-25 18:47:34,803 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:47:34,805 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/sv-benchmarks/c/ldv-regression/test27-2.c [2021-11-25 18:47:34,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/data/a191cf29a/fa7b71e5604e4314a778510d78553ce9/FLAGfeae79499 [2021-11-25 18:47:35,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/data/a191cf29a/fa7b71e5604e4314a778510d78553ce9 [2021-11-25 18:47:35,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:47:35,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:47:35,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:47:35,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:47:35,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:47:35,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43bd4f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35, skipping insertion in model container [2021-11-25 18:47:35,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:47:35,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:47:35,453 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_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2021-11-25 18:47:35,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:47:35,468 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:47:35,512 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_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2021-11-25 18:47:35,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:47:35,530 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:47:35,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35 WrapperNode [2021-11-25 18:47:35,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:47:35,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:47:35,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:47:35,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:47:35,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,597 INFO L137 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2021-11-25 18:47:35,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:47:35,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:47:35,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:47:35,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:47:35,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:47:35,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:47:35,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:47:35,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:47:35,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (1/1) ... [2021-11-25 18:47:35,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:47:35,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:47:35,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:47:35,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:47:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:47:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:47:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:47:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:47:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:47:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:47:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:47:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:47:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:47:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:47:35,828 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:47:35,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:47:36,115 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:47:36,156 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:47:36,156 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:47:36,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:47:36 BoogieIcfgContainer [2021-11-25 18:47:36,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:47:36,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:47:36,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:47:36,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:47:36,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:47:35" (1/3) ... [2021-11-25 18:47:36,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6cb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:47:36, skipping insertion in model container [2021-11-25 18:47:36,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:35" (2/3) ... [2021-11-25 18:47:36,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6cb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:47:36, skipping insertion in model container [2021-11-25 18:47:36,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:47:36" (3/3) ... [2021-11-25 18:47:36,170 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-2.c [2021-11-25 18:47:36,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:47:36,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:47:36,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:47:36,261 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:47:36,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:47:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:47:36,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:36,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:47:36,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:47:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 994857001, now seen corresponding path program 1 times [2021-11-25 18:47:36,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:36,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827766212] [2021-11-25 18:47:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:36,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:36,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827766212] [2021-11-25 18:47:36,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827766212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:47:36,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:47:36,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:47:36,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507488915] [2021-11-25 18:47:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:47:36,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:47:36,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:36,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:47:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:47:36,710 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:36,758 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-11-25 18:47:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:47:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:47:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:36,770 INFO L225 Difference]: With dead ends: 25 [2021-11-25 18:47:36,771 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 18:47:36,773 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:47:36,779 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 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 [2021-11-25 18:47:36,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:47:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 18:47:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 18:47:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-25 18:47:36,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2021-11-25 18:47:36,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:36,814 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-25 18:47:36,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-25 18:47:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:47:36,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:36,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:47:36,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:47:36,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:47:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1531794660, now seen corresponding path program 1 times [2021-11-25 18:47:36,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:36,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110272511] [2021-11-25 18:47:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:36,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:36,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:36,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110272511] [2021-11-25 18:47:36,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110272511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:47:36,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692867914] [2021-11-25 18:47:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:36,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:47:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:47:36,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:47:36,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:47:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:37,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:47:37,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:47:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:37,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:47:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:37,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692867914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:47:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156528584] [2021-11-25 18:47:37,302 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:47:37,302 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:47:37,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:47:37,346 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:47:37,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:47:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,702 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:47:37,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:47:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 26 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 45 [2021-11-25 18:47:37,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 18:47:37,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 18:47:37,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:37,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-25 18:47:38,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:38,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:38,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:38,333 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-25 18:47:38,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 479 treesize of output 443 [2021-11-25 18:47:38,405 INFO L354 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2021-11-25 18:47:38,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 445 treesize of output 423 [2021-11-25 18:47:38,473 INFO L354 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2021-11-25 18:47:38,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 445 treesize of output 423 [2021-11-25 18:47:38,537 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:47:38,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 436 treesize of output 441 [2021-11-25 18:47:38,581 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:47:38,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 432 treesize of output 437 [2021-11-25 18:47:39,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:39,589 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:47:39,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:47:39,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:39,623 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:47:39,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:47:39,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:39,652 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:47:39,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:47:39,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:39,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:39,762 INFO L354 Elim1Store]: treesize reduction 75, result has 40.0 percent of original size [2021-11-25 18:47:39,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 69 [2021-11-25 18:47:39,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:39,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:39,867 INFO L354 Elim1Store]: treesize reduction 71, result has 39.3 percent of original size [2021-11-25 18:47:39,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 65 [2021-11-25 18:47:39,927 INFO L354 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2021-11-25 18:47:39,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 18:47:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:39,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 27 [2021-11-25 18:47:39,980 INFO L354 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2021-11-25 18:47:39,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2021-11-25 18:47:40,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:47:41,691 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '131#(and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (or (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|) |ULTIMATE.start_main_~#a~0#1.base|)) (exists ((|v_ULTIMATE.start_main_~i~0#1_17| Int)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)) |ULTIMATE.start_main_~#dummy~0#1.offset|) (< |v_ULTIMATE.start_main_~i~0#1_17| 9) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (* |v_ULTIMATE.start_main_~i~0#1_17| 4))) (+ |ULTIMATE.start_main_~i~0#1| 10)) (or (and (= |ULTIMATE.start_main_~#cont~0#1.offset| (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 |v_ULTIMATE.start_main_~i~0#1_17|))) (= |ULTIMATE.start_main_~#a~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_17| 4))) |v_ULTIMATE.start_main_~i~0#1_17|) (and (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|) (= (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 |v_ULTIMATE.start_main_~i~0#1_17|)) |ULTIMATE.start_main_~#dummy~0#1.offset|))) (or (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (= (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 |v_ULTIMATE.start_main_~i~0#1_17|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|))) (<= 0 |v_ULTIMATE.start_main_~i~0#1_17|) (= |ULTIMATE.start_main_~pa~0#1.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|))))) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_17| 4)))) (= (+ (* 4 |v_ULTIMATE.start_main_~i~0#1_17|) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|))))) |ULTIMATE.start_main_~pa~0#1.offset|) (= |ULTIMATE.start_main_~#dummy~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))))) (= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) |ULTIMATE.start_main_~#dummies~0#1.offset|) (= |ULTIMATE.start_main_~#dummies~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4))))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (* |ULTIMATE.start_check_~i#1| 4))) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:47:41,692 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:47:41,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:47:41,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-25 18:47:41,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741685417] [2021-11-25 18:47:41,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:47:41,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:47:41,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:47:41,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:47:41,696 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:41,725 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-25 18:47:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:47:41,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 [2021-11-25 18:47:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:41,726 INFO L225 Difference]: With dead ends: 22 [2021-11-25 18:47:41,727 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:47:41,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:47:41,729 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:41,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:47:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:47:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:47:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-25 18:47:41,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2021-11-25 18:47:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:41,734 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-25 18:47:41,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-25 18:47:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:47:41,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:41,736 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:47:41,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:47:41,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:47:41,955 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:47:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1028911079, now seen corresponding path program 2 times [2021-11-25 18:47:41,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:41,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129677410] [2021-11-25 18:47:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:41,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:47:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:42,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:47:42,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129677410] [2021-11-25 18:47:42,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129677410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:47:42,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688028001] [2021-11-25 18:47:42,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:47:42,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:47:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:47:42,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:47:42,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:47:42,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:47:42,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:47:42,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:47:42,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:47:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:42,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:47:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:47:43,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688028001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:47:43,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1514694029] [2021-11-25 18:47:43,025 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:47:43,026 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:47:43,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:47:43,026 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:47:43,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:47:43,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,307 INFO L354 Elim1Store]: treesize reduction 195, result has 25.3 percent of original size [2021-11-25 18:47:43,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 85 [2021-11-25 18:47:43,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,556 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:47:43,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:47:43,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,635 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:47:43,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:47:43,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,673 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:47:43,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:47:43,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,710 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:47:43,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:47:43,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,767 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:47:43,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:47:43,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,797 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:47:43,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:47:43,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,827 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:47:43,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:47:43,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:43,959 INFO L354 Elim1Store]: treesize reduction 71, result has 39.3 percent of original size [2021-11-25 18:47:43,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 65 [2021-11-25 18:47:44,023 INFO L354 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2021-11-25 18:47:44,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2021-11-25 18:47:44,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:44,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 27 [2021-11-25 18:47:44,084 INFO L354 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2021-11-25 18:47:44,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2021-11-25 18:47:44,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:44,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:44,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:47:44,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:47:44,198 INFO L354 Elim1Store]: treesize reduction 75, result has 40.0 percent of original size [2021-11-25 18:47:44,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 69 [2021-11-25 18:47:44,807 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:47:47,347 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '279#(and (exists ((|v_ULTIMATE.start_main_~i~0#1_19| Int)) (and (< |v_ULTIMATE.start_main_~i~0#1_19| 9) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)) |ULTIMATE.start_main_~#dummy~0#1.offset|) (<= 0 |v_ULTIMATE.start_main_~i~0#1_19|) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_19| 4)))) (= |ULTIMATE.start_main_~pa~0#1.offset| (+ (* 4 |v_ULTIMATE.start_main_~i~0#1_19|) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))))) (= |ULTIMATE.start_main_~#dummy~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (or (and (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|) (= (+ (* 4 |v_ULTIMATE.start_main_~i~0#1_19|) |ULTIMATE.start_main_~#a~0#1.offset|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) (and (= |ULTIMATE.start_main_~#cont~0#1.offset| (+ (* 4 |v_ULTIMATE.start_main_~i~0#1_19|) |ULTIMATE.start_main_~#a~0#1.offset|)) (= |ULTIMATE.start_main_~#a~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|)) (= |v_ULTIMATE.start_main_~i~0#1_19| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_19| 4))))) (or (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (= (+ (* 4 |v_ULTIMATE.start_main_~i~0#1_19|) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|))) (= |ULTIMATE.start_main_~pa~0#1.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|))))) (= (+ |ULTIMATE.start_main_~i~0#1| 10) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))))))) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (or (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|) |ULTIMATE.start_main_~#a~0#1.base|)) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) |ULTIMATE.start_main_~#dummies~0#1.offset|) (= |ULTIMATE.start_main_~#dummies~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.offset|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4))))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (* |ULTIMATE.start_check_~i#1| 4))) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 18:47:47,347 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:47:47,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:47:47,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-25 18:47:47,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375437792] [2021-11-25 18:47:47,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:47:47,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:47:47,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:47:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:47:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=316, Unknown=1, NotChecked=0, Total=420 [2021-11-25 18:47:47,350 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:47:47,386 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2021-11-25 18:47:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:47:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 18:47:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:47:47,387 INFO L225 Difference]: With dead ends: 28 [2021-11-25 18:47:47,387 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 18:47:47,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=103, Invalid=316, Unknown=1, NotChecked=0, Total=420 [2021-11-25 18:47:47,389 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:47:47,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:47:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 18:47:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 18:47:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-25 18:47:47,394 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-11-25 18:47:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:47:47,394 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-25 18:47:47,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:47:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-25 18:47:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:47:47,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:47:47,396 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:47:47,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:47:47,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:47:47,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:47:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:47:47,609 INFO L85 PathProgramCache]: Analyzing trace with hash 360205369, now seen corresponding path program 3 times [2021-11-25 18:47:47,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:47:47,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676392562] [2021-11-25 18:47:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:47:47,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:47:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:47:47,970 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:47:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:47:48,267 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:47:48,268 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:47:48,269 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:47:48,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:47:48,275 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-25 18:47:48,278 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:47:48,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:47:48 BoogieIcfgContainer [2021-11-25 18:47:48,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:47:48,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:47:48,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:47:48,347 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:47:48,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:47:36" (3/4) ... [2021-11-25 18:47:48,349 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 18:47:48,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:47:48,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:47:48,399 INFO L158 Benchmark]: Toolchain (without parser) took 13246.51ms. Allocated memory was 92.3MB in the beginning and 182.5MB in the end (delta: 90.2MB). Free memory was 54.9MB in the beginning and 68.0MB in the end (delta: -13.0MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. [2021-11-25 18:47:48,399 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 92.3MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:47:48,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.41ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 54.7MB in the beginning and 85.4MB in the end (delta: -30.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-25 18:47:48,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.18ms. Allocated memory is still 111.1MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:47:48,400 INFO L158 Benchmark]: Boogie Preprocessor took 30.34ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 82.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:47:48,401 INFO L158 Benchmark]: RCFGBuilder took 528.76ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 68.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 18:47:48,401 INFO L158 Benchmark]: TraceAbstraction took 12184.80ms. Allocated memory was 111.1MB in the beginning and 182.5MB in the end (delta: 71.3MB). Free memory was 67.6MB in the beginning and 71.1MB in the end (delta: -3.5MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2021-11-25 18:47:48,402 INFO L158 Benchmark]: Witness Printer took 51.81ms. Allocated memory is still 182.5MB. Free memory was 71.1MB in the beginning and 68.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:47:48,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 92.3MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.41ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 54.7MB in the beginning and 85.4MB in the end (delta: -30.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.18ms. Allocated memory is still 111.1MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.34ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 82.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 528.76ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 68.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12184.80ms. Allocated memory was 111.1MB in the beginning and 182.5MB in the end (delta: 71.3MB). Free memory was 67.6MB in the beginning and 71.1MB in the end (delta: -3.5MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * Witness Printer took 51.81ms. Allocated memory is still 182.5MB. Free memory was 71.1MB in the beginning and 68.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 55]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] struct cont cont; [L24] struct dummy dummy; [L25] struct dummy *dummies[10]; [L26] int a[10]; [L27] int i, *pa; [L28] i = __VERIFIER_nondet_int() [L29] int j = 0; VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=0] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=1] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=2] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=3] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=4] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=5] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=6] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=7] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=8] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=9] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=10] [L29] COND FALSE !(j < 10) VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=10] [L36] COND TRUE i >= 0 && i < 9 [L37] a[i] = i [L38] dummy.array = &a[i] [L39] dummies[i + 1] = &dummy [L40] cont.array = &dummies[0] [L41] EXPR cont.array [L41] EXPR cont.array[i] [L41] EXPR cont.array[i]->array [L41] pa = &cont.array[i]->array[i] [L42] EXPR a[i] VAL [a={5:0}, a[i]=1, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=10, pa={56:17}] [L42] COND TRUE a[i] > 0 [L43] EXPR dummies[i + 1] [L43] EXPR dummies[i + 1]->array [L43] EXPR dummies[i + 1]->array[i] [L43] i = dummies[i + 1]->array[i] - 10 [L44] EXPR \read(*pa) VAL [\read(*pa)=-4, a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=0, j=10, pa={56:17}] [L44] COND FALSE !(i < *pa) [L47] CALL, EXPR check(&cont, i) [L18] EXPR pc->array [L18] EXPR pc->array[i] [L18] EXPR pc->array[i]->array [L18] EXPR pc->array[i]->array[i] [L18] return pc->array[i]->array[i] == i; [L47] RET, EXPR check(&cont, i) [L47] COND TRUE !check(&cont, i) [L55] reach_error() VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=0, j=10, pa={56:17}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 25 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 533 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 18:47:48,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edea5d-1cfb-4831-b4c8-ddb668b67d87/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE