./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix-2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix-2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29c60028fe77c919c85938e022adc26e4c09a5802df35e9dae1aea434a543980 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:32:41,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:32:41,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:32:41,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:32:41,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:32:41,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:32:41,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:32:41,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:32:41,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:32:41,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:32:41,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:32:41,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:32:41,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:32:41,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:32:41,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:32:41,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:32:41,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:32:41,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:32:41,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:32:41,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:32:41,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:32:41,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:32:41,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:32:41,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:32:41,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:32:41,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:32:41,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:32:41,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:32:41,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:32:41,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:32:41,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:32:41,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:32:41,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:32:41,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:32:41,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:32:41,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:32:41,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:32:41,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:32:41,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:32:41,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:32:41,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:32:41,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:32:41,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:32:41,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:32:41,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:32:41,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:32:41,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:32:41,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:32:41,207 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:32:41,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:32:41,208 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:32:41,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:32:41,209 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:32:41,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:32:41,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:32:41,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:32:41,210 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:32:41,210 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:32:41,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:32:41,211 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:32:41,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:32:41,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:32:41,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:32:41,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:32:41,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:32:41,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:32:41,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:32:41,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:32:41,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:32:41,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:32:41,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:32:41,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:32:41,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:32:41,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:32:41,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:32:41,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:32:41,216 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:32:41,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:32:41,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:32:41,217 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:32:41,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:32:41,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:32:41,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:32:41,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29c60028fe77c919c85938e022adc26e4c09a5802df35e9dae1aea434a543980 [2022-11-26 00:32:41,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:32:41,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:32:41,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:32:41,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:32:41,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:32:41,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loops/matrix-2-2.c [2022-11-26 00:32:44,564 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:32:44,749 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:32:44,749 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/sv-benchmarks/c/loops/matrix-2-2.c [2022-11-26 00:32:44,756 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/data/11ce7e7bd/c76f4576d3e94210ad43760449f9a212/FLAG30648f638 [2022-11-26 00:32:44,798 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/data/11ce7e7bd/c76f4576d3e94210ad43760449f9a212 [2022-11-26 00:32:44,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:32:44,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:32:44,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:32:44,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:32:44,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:32:44,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:32:44" (1/1) ... [2022-11-26 00:32:44,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5304af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:44, skipping insertion in model container [2022-11-26 00:32:44,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:32:44" (1/1) ... [2022-11-26 00:32:44,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:32:44,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:32:45,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/sv-benchmarks/c/loops/matrix-2-2.c[322,335] [2022-11-26 00:32:45,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:32:45,030 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:32:45,040 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/sv-benchmarks/c/loops/matrix-2-2.c[322,335] [2022-11-26 00:32:45,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:32:45,062 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:32:45,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45 WrapperNode [2022-11-26 00:32:45,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:32:45,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:32:45,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:32:45,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:32:45,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,108 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2022-11-26 00:32:45,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:32:45,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:32:45,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:32:45,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:32:45,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:32:45,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:32:45,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:32:45,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:32:45,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (1/1) ... [2022-11-26 00:32:45,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:32:45,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:45,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:32:45,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:32:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:32:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:32:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:32:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:32:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:32:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:32:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:32:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:32:45,326 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:32:45,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:32:45,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:32:45,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:32:45,646 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-26 00:32:45,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:32:45 BoogieIcfgContainer [2022-11-26 00:32:45,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:32:45,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:32:45,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:32:45,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:32:45,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:32:44" (1/3) ... [2022-11-26 00:32:45,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ad8322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:32:45, skipping insertion in model container [2022-11-26 00:32:45,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:45" (2/3) ... [2022-11-26 00:32:45,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ad8322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:32:45, skipping insertion in model container [2022-11-26 00:32:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:32:45" (3/3) ... [2022-11-26 00:32:45,658 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix-2-2.c [2022-11-26 00:32:45,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:32:45,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:32:45,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:32:45,757 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@231a4e81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:32:45,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:32:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:32:45,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:45,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:45,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash 9911752, now seen corresponding path program 1 times [2022-11-26 00:32:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:45,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802374437] [2022-11-26 00:32:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:45,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:32:45,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730498583] [2022-11-26 00:32:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:45,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:45,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:32:45,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:32:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:32:45,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:32:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:46,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:32:46,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802374437] [2022-11-26 00:32:46,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:32:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730498583] [2022-11-26 00:32:46,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730498583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:46,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:46,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:32:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536434241] [2022-11-26 00:32:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:46,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:32:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:32:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:32:46,161 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:46,249 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2022-11-26 00:32:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:32:46,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:32:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:46,269 INFO L225 Difference]: With dead ends: 31 [2022-11-26 00:32:46,270 INFO L226 Difference]: Without dead ends: 18 [2022-11-26 00:32:46,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:32:46,277 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:46,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:32:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-26 00:32:46,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2022-11-26 00:32:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-11-26 00:32:46,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 7 [2022-11-26 00:32:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:46,316 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-26 00:32:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2022-11-26 00:32:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:32:46,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:46,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:46,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:32:46,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:46,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash -716313793, now seen corresponding path program 1 times [2022-11-26 00:32:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:46,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635276091] [2022-11-26 00:32:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:46,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:32:46,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814267077] [2022-11-26 00:32:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:46,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:46,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:32:46,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:32:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:46,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:32:46,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:32:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:46,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:32:46,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635276091] [2022-11-26 00:32:46,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:32:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814267077] [2022-11-26 00:32:46,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814267077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:46,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:46,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:32:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855497118] [2022-11-26 00:32:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:32:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:32:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:32:46,759 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:46,827 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2022-11-26 00:32:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:32:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:32:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:46,829 INFO L225 Difference]: With dead ends: 29 [2022-11-26 00:32:46,829 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:32:46,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:32:46,831 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:46,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:32:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:32:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2022-11-26 00:32:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-26 00:32:46,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2022-11-26 00:32:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:46,837 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-26 00:32:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:32:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-26 00:32:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:32:46,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:46,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:46,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:32:47,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-26 00:32:47,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash 108019397, now seen corresponding path program 1 times [2022-11-26 00:32:47,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:47,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360524678] [2022-11-26 00:32:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:47,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:32:47,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85311043] [2022-11-26 00:32:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:47,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:47,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:47,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:32:47,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:32:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:32:47,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:32:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:32:47,198 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:32:47,199 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:32:47,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:32:47,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:32:47,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:47,414 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 00:32:47,418 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:32:47,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:32:47 BoogieIcfgContainer [2022-11-26 00:32:47,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:32:47,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:32:47,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:32:47,444 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:32:47,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:32:45" (3/4) ... [2022-11-26 00:32:47,446 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-26 00:32:47,481 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49779935-2ec9-479d-804e-6fd3663f8df7/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:32:47,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:32:47,482 INFO L158 Benchmark]: Toolchain (without parser) took 2680.18ms. Allocated memory is still 146.8MB. Free memory was 120.4MB in the beginning and 38.9MB in the end (delta: 81.4MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2022-11-26 00:32:47,482 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:32:47,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.00ms. Allocated memory is still 146.8MB. Free memory was 119.7MB in the beginning and 109.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:32:47,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.20ms. Allocated memory is still 146.8MB. Free memory was 109.6MB in the beginning and 108.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:32:47,484 INFO L158 Benchmark]: Boogie Preprocessor took 37.82ms. Allocated memory is still 146.8MB. Free memory was 108.0MB in the beginning and 106.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:32:47,484 INFO L158 Benchmark]: RCFGBuilder took 498.49ms. Allocated memory is still 146.8MB. Free memory was 106.7MB in the beginning and 90.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:32:47,484 INFO L158 Benchmark]: TraceAbstraction took 1790.93ms. Allocated memory is still 146.8MB. Free memory was 90.1MB in the beginning and 41.0MB in the end (delta: 49.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-26 00:32:47,485 INFO L158 Benchmark]: Witness Printer took 38.19ms. Allocated memory is still 146.8MB. Free memory was 41.0MB in the beginning and 38.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:32:47,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.00ms. Allocated memory is still 146.8MB. Free memory was 119.7MB in the beginning and 109.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.20ms. Allocated memory is still 146.8MB. Free memory was 109.6MB in the beginning and 108.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.82ms. Allocated memory is still 146.8MB. Free memory was 108.0MB in the beginning and 106.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 498.49ms. Allocated memory is still 146.8MB. Free memory was 106.7MB in the beginning and 90.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1790.93ms. Allocated memory is still 146.8MB. Free memory was 90.1MB in the beginning and 41.0MB in the end (delta: 49.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 38.19ms. Allocated memory is still 146.8MB. Free memory was 41.0MB in the beginning and 38.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] COND FALSE !(N_LIN >= 4000000000 / sizeof(int) || N_COL >= 4000000000 / sizeof(int)) [L21] unsigned int j,k; [L22] int matriz[N_COL][N_LIN], maior; [L24] maior = __VERIFIER_nondet_int() [L25] j=0 VAL [j=0, maior=0, matriz={4:0}, N_COL=1, N_LIN=1] [L25] COND TRUE jmaior) [L26] k++ VAL [j=0, k=1, maior=0, matriz={4:0}, matriz[j][k]=16, N_COL=1, N_LIN=1] [L26] COND FALSE !(k