./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw --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 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:19:47,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:19:47,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:19:47,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:19:47,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:19:47,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:19:47,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:19:47,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:19:47,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:19:47,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:19:47,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:19:47,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:19:47,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:19:47,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:19:47,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:19:47,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:19:47,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:19:47,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:19:47,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:19:47,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:19:47,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:19:47,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:19:47,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:19:47,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:19:47,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:19:47,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:19:47,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:19:47,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:19:47,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:19:47,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:19:47,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:19:47,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:19:47,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:19:47,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:19:47,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:19:47,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:19:47,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:19:47,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:19:47,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:19:47,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:19:47,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:19:47,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:19:47,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:19:47,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:19:47,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:19:47,674 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:19:47,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:19:47,674 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:19:47,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:19:47,674 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:19:47,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:19:47,681 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:19:47,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:19:47,683 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:19:47,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:19:47,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:19:47,684 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:19:47,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:19:47,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:19:47,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:19:47,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:19:47,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:19:47,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:19:47,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:19:47,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:19:47,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:19:47,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:19:47,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:19:47,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:19:47,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:19:47,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:19:47,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:19:47,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:19:47,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:19:47,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:19:47,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:19:47,696 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:19:47,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:19:47,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:19:47,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:19:47,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:19:47,697 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_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b [2021-10-20 06:19:47,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:19:47,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:19:47,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:19:47,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:19:47,984 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:19:47,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loops/matrix-2.c [2021-10-20 06:19:48,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/data/93dfd1982/4c1d38f493b14779adea03cdec1582ce/FLAG9ac8ed59a [2021-10-20 06:19:48,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:19:48,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/sv-benchmarks/c/loops/matrix-2.c [2021-10-20 06:19:48,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/data/93dfd1982/4c1d38f493b14779adea03cdec1582ce/FLAG9ac8ed59a [2021-10-20 06:19:48,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/data/93dfd1982/4c1d38f493b14779adea03cdec1582ce [2021-10-20 06:19:48,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:19:48,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:19:48,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:19:48,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:19:48,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:19:48,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:48" (1/1) ... [2021-10-20 06:19:48,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92bde96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:48, skipping insertion in model container [2021-10-20 06:19:48,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:48" (1/1) ... [2021-10-20 06:19:48,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:19:48,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:19:49,043 WARN L228 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_aafeb45e-9e43-4737-8918-70525fa90f69/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-10-20 06:19:49,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:19:49,066 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:19:49,078 WARN L228 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_aafeb45e-9e43-4737-8918-70525fa90f69/sv-benchmarks/c/loops/matrix-2.c[320,333] [2021-10-20 06:19:49,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:19:49,100 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:19:49,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49 WrapperNode [2021-10-20 06:19:49,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:19:49,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:19:49,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:19:49,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:19:49,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:19:49,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:19:49,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:19:49,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:19:49,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:19:49,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:19:49,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:19:49,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:19:49,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (1/1) ... [2021-10-20 06:19:49,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:19:49,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:19:49,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:19:49,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:19:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:19:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:19:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 06:19:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:19:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:19:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 06:19:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:19:49,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:19:49,694 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-20 06:19:49,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:49 BoogieIcfgContainer [2021-10-20 06:19:49,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:19:49,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:19:49,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:19:49,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:19:49,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:19:48" (1/3) ... [2021-10-20 06:19:49,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cdfcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:49, skipping insertion in model container [2021-10-20 06:19:49,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:49" (2/3) ... [2021-10-20 06:19:49,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cdfcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:49, skipping insertion in model container [2021-10-20 06:19:49,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:49" (3/3) ... [2021-10-20 06:19:49,720 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2021-10-20 06:19:49,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:19:49,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:19:49,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:19:49,811 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 [2021-10-20 06:19:49,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:19:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:19:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 06:19:49,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:19:49,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 06:19:49,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:19:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:19:49,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1179584298, now seen corresponding path program 1 times [2021-10-20 06:19:49,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:19:49,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335471009] [2021-10-20 06:19:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:19:49,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:19:49,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:19:49,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938966677] [2021-10-20 06:19:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:19:49,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:19:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:19:49,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:19:49,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:19:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:19:50,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:19:50,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:19:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:19:50,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:19:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:19:50,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:19:50,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335471009] [2021-10-20 06:19:50,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:19:50,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938966677] [2021-10-20 06:19:50,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938966677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:19:50,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:19:50,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-20 06:19:50,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007622760] [2021-10-20 06:19:50,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 06:19:50,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:19:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 06:19:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:19:50,394 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 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) Second operand has 6 states, 6 states have (on average 1.5) 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) [2021-10-20 06:19:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:19:50,500 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-20 06:19:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:19:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) 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 6 [2021-10-20 06:19:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:19:50,510 INFO L225 Difference]: With dead ends: 27 [2021-10-20 06:19:50,510 INFO L226 Difference]: Without dead ends: 17 [2021-10-20 06:19:50,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:19:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-20 06:19:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2021-10-20 06:19:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-10-20 06:19:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-10-20 06:19:50,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 6 [2021-10-20 06:19:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:19:50,549 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-10-20 06:19:50,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) 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) [2021-10-20 06:19:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2021-10-20 06:19:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 06:19:50,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:19:50,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:19:50,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:19:50,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-20 06:19:50,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:19:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:19:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1470021620, now seen corresponding path program 1 times [2021-10-20 06:19:50,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:19:50,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765927821] [2021-10-20 06:19:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:19:50,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:19:50,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:19:50,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302314076] [2021-10-20 06:19:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:19:50,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:19:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:19:50,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:19:50,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 06:19:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:19:50,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-20 06:19:50,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:19:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:19:51,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:19:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:19:51,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:19:51,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765927821] [2021-10-20 06:19:51,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:19:51,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302314076] [2021-10-20 06:19:51,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302314076] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:19:51,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:19:51,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-20 06:19:51,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925356088] [2021-10-20 06:19:51,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 06:19:51,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:19:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 06:19:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:19:51,166 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-20 06:19:51,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:19:51,237 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-20 06:19:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:19:51,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) Word has length 8 [2021-10-20 06:19:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:19:51,239 INFO L225 Difference]: With dead ends: 28 [2021-10-20 06:19:51,239 INFO L226 Difference]: Without dead ends: 16 [2021-10-20 06:19:51,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:19:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-20 06:19:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-10-20 06:19:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2021-10-20 06:19:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-20 06:19:51,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2021-10-20 06:19:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:19:51,246 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-20 06:19:51,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-20 06:19:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-10-20 06:19:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:19:51,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:19:51,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:19:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:19:51,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:19:51,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:19:51,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:19:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1891985764, now seen corresponding path program 1 times [2021-10-20 06:19:51,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:19:51,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603709377] [2021-10-20 06:19:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:19:51,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:19:51,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:19:51,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139376691] [2021-10-20 06:19:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:19:51,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:19:51,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:19:51,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:19:51,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 06:19:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:19:51,579 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:19:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:19:51,640 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 06:19:51,641 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:19:51,642 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:19:51,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:19:51,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:19:51,850 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:19:51,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:19:51 BoogieIcfgContainer [2021-10-20 06:19:51,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:19:51,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:19:51,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:19:51,890 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:19:51,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:49" (3/4) ... [2021-10-20 06:19:51,892 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 06:19:51,947 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafeb45e-9e43-4737-8918-70525fa90f69/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:19:51,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:19:51,949 INFO L168 Benchmark]: Toolchain (without parser) took 3081.48 ms. Allocated memory is still 121.6 MB. Free memory was 79.1 MB in the beginning and 75.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:19:51,950 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory was 95.8 MB in the beginning and 95.7 MB in the end (delta: 49.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:19:51,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.12 ms. Allocated memory is still 121.6 MB. Free memory was 78.9 MB in the beginning and 95.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:19:51,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.40 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 93.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:19:51,952 INFO L168 Benchmark]: Boogie Preprocessor took 25.49 ms. Allocated memory is still 121.6 MB. Free memory was 93.8 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:19:51,953 INFO L168 Benchmark]: RCFGBuilder took 531.49 ms. Allocated memory is still 121.6 MB. Free memory was 92.4 MB in the beginning and 76.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:19:51,953 INFO L168 Benchmark]: TraceAbstraction took 2187.33 ms. Allocated memory is still 121.6 MB. Free memory was 76.3 MB in the beginning and 77.1 MB in the end (delta: -708.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:19:51,954 INFO L168 Benchmark]: Witness Printer took 58.87 ms. Allocated memory is still 121.6 MB. Free memory was 77.1 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:19:51,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory was 95.8 MB in the beginning and 95.7 MB in the end (delta: 49.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.12 ms. Allocated memory is still 121.6 MB. Free memory was 78.9 MB in the beginning and 95.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.40 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 93.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.49 ms. Allocated memory is still 121.6 MB. Free memory was 93.8 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.49 ms. Allocated memory is still 121.6 MB. Free memory was 92.4 MB in the beginning and 76.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2187.33 ms. Allocated memory is still 121.6 MB. Free memory was 76.3 MB in the beginning and 77.1 MB in the end (delta: -708.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.87 ms. Allocated memory is still 121.6 MB. Free memory was 77.1 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ [L23] COND FALSE !(k