./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp1f.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_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/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_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/indp1f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/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_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/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 130cfc4671676ffb10ff6ff5bac1770d2e3c27a88a61abbafe1bb2bbab77647f .......................................................................................................................................................................................................................................................................................................................................................................................... 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 05:09:27,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:09:27,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:09:27,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:09:27,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:09:27,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:09:27,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:09:27,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:09:27,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:09:27,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:09:27,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:09:27,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:09:27,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:09:27,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:09:27,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:09:27,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:09:27,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:09:27,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:09:27,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:09:27,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:09:27,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:09:27,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:09:27,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:09:27,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:09:27,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:09:27,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:09:27,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:09:27,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:09:27,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:09:27,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:09:27,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:09:27,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:09:27,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:09:27,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:09:27,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:09:27,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:09:27,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:09:27,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:09:27,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:09:27,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:09:27,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:09:27,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:09:27,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:09:27,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:09:27,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:09:27,674 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:09:27,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:09:27,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:09:27,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:09:27,675 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:09:27,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:09:27,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:09:27,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:09:27,683 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:09:27,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:09:27,684 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:09:27,684 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:09:27,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:09:27,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:09:27,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:09:27,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:09:27,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:09:27,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:09:27,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:09:27,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:09:27,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:09:27,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:09:27,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:09:27,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:09:27,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:09:27,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:09:27,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:09:27,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:09:27,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:09:27,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:09:27,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:09:27,692 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:09:27,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:09:27,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:09:27,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:09:27,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:09:27,693 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_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 130cfc4671676ffb10ff6ff5bac1770d2e3c27a88a61abbafe1bb2bbab77647f [2021-10-20 05:09:27,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:09:27,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:09:28,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:09:28,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:09:28,003 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:09:28,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/array-fpi/indp1f.c [2021-10-20 05:09:28,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/data/46a077957/a5bc617c8712498788ec90189cddf11d/FLAG0c7be6542 [2021-10-20 05:09:28,523 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:09:28,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/sv-benchmarks/c/array-fpi/indp1f.c [2021-10-20 05:09:28,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/data/46a077957/a5bc617c8712498788ec90189cddf11d/FLAG0c7be6542 [2021-10-20 05:09:28,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/data/46a077957/a5bc617c8712498788ec90189cddf11d [2021-10-20 05:09:28,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:09:28,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:09:28,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:09:28,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:09:28,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:09:28,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:09:28" (1/1) ... [2021-10-20 05:09:28,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777c0332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:28, skipping insertion in model container [2021-10-20 05:09:28,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:09:28" (1/1) ... [2021-10-20 05:09:28,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:09:28,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:09:29,146 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_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/sv-benchmarks/c/array-fpi/indp1f.c[589,602] [2021-10-20 05:09:29,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:09:29,179 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:09:29,195 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_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/sv-benchmarks/c/array-fpi/indp1f.c[589,602] [2021-10-20 05:09:29,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:09:29,223 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:09:29,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29 WrapperNode [2021-10-20 05:09:29,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:09:29,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:09:29,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:09:29,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:09:29,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:09:29,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:09:29,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:09:29,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:09:29,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:09:29,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:09:29,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:09:29,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:09:29,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (1/1) ... [2021-10-20 05:09:29,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:09:29,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:09:29,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:09:29,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:09:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:09:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:09:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:09:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 05:09:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:09:29,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:09:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:09:29,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:09:29,905 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-20 05:09:29,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:09:29 BoogieIcfgContainer [2021-10-20 05:09:29,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:09:29,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:09:29,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:09:29,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:09:29,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:09:28" (1/3) ... [2021-10-20 05:09:29,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f66ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:09:29, skipping insertion in model container [2021-10-20 05:09:29,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:09:29" (2/3) ... [2021-10-20 05:09:29,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f66ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:09:29, skipping insertion in model container [2021-10-20 05:09:29,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:09:29" (3/3) ... [2021-10-20 05:09:29,922 INFO L111 eAbstractionObserver]: Analyzing ICFG indp1f.c [2021-10-20 05:09:29,928 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:09:29,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:09:29,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:09:29,999 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 05:09:30,000 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:09:30,018 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) [2021-10-20 05:09:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:09:30,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:09:30,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:09:30,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:09:30,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:09:30,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1718194540, now seen corresponding path program 1 times [2021-10-20 05:09:30,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:09:30,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5655458] [2021-10-20 05:09:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:09:30,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:09:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:09:30,303 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 05:09:30,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:09:30,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5655458] [2021-10-20 05:09:30,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5655458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:09:30,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:09:30,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:09:30,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281205534] [2021-10-20 05:09:30,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:09:30,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:09:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:09:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:09:30,335 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:09:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:09:30,386 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2021-10-20 05:09:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:09:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-20 05:09:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:09:30,399 INFO L225 Difference]: With dead ends: 22 [2021-10-20 05:09:30,399 INFO L226 Difference]: Without dead ends: 11 [2021-10-20 05:09:30,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:09:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-20 05:09:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-20 05:09:30,439 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) [2021-10-20 05:09:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-20 05:09:30,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2021-10-20 05:09:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:09:30,442 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-20 05:09:30,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:09:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-10-20 05:09:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:09:30,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:09:30,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:09:30,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:09:30,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:09:30,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:09:30,445 INFO L82 PathProgramCache]: Analyzing trace with hash 473790610, now seen corresponding path program 1 times [2021-10-20 05:09:30,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:09:30,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330236585] [2021-10-20 05:09:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:09:30,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:09:30,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:09:30,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617382861] [2021-10-20 05:09:30,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:09:30,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:09:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:09:30,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:09:30,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:09:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:09:30,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 05:09:30,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:09:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 05:09:30,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:09:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 05:09:30,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:09:30,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330236585] [2021-10-20 05:09:30,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:09:30,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617382861] [2021-10-20 05:09:30,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617382861] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:09:30,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:09:30,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-20 05:09:30,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537258226] [2021-10-20 05:09:30,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:09:30,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:09:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:09:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:09:30,745 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:09:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:09:30,801 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-10-20 05:09:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:09:30,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 05:09:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:09:30,803 INFO L225 Difference]: With dead ends: 24 [2021-10-20 05:09:30,803 INFO L226 Difference]: Without dead ends: 18 [2021-10-20 05:09:30,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:09:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-20 05:09:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-10-20 05:09:30,809 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) [2021-10-20 05:09:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-20 05:09:30,810 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2021-10-20 05:09:30,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:09:30,811 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-20 05:09:30,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:09:30,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-20 05:09:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:09:30,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:09:30,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:09:30,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:09:31,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:09:31,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:09:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:09:31,041 INFO L82 PathProgramCache]: Analyzing trace with hash -905852742, now seen corresponding path program 1 times [2021-10-20 05:09:31,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:09:31,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872474514] [2021-10-20 05:09:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:09:31,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:09:31,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:09:31,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302545085] [2021-10-20 05:09:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:09:31,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:09:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:09:31,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:09:31,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 05:09:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:09:31,172 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:09:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:09:31,231 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:09:31,232 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:09:31,233 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:09:31,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:09:31,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:09:31,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:09:31,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:09:31 BoogieIcfgContainer [2021-10-20 05:09:31,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:09:31,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:09:31,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:09:31,507 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:09:31,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:09:29" (3/4) ... [2021-10-20 05:09:31,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:09:31,568 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42829ad2-3d3a-4237-a0ce-88bcb90b8d97/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:09:31,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:09:31,575 INFO L168 Benchmark]: Toolchain (without parser) took 2652.11 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 51.8 MB in the beginning and 56.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:09:31,576 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:09:31,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.89 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 51.7 MB in the beginning and 86.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:09:31,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.12 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:09:31,579 INFO L168 Benchmark]: Boogie Preprocessor took 57.55 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 84.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:09:31,580 INFO L168 Benchmark]: RCFGBuilder took 576.21 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 70.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:09:31,580 INFO L168 Benchmark]: TraceAbstraction took 1595.26 ms. Allocated memory is still 111.1 MB. Free memory was 69.7 MB in the beginning and 58.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:09:31,581 INFO L168 Benchmark]: Witness Printer took 64.85 ms. Allocated memory is still 111.1 MB. Free memory was 58.8 MB in the beginning and 56.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:09:31,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.89 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 51.7 MB in the beginning and 86.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.12 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.55 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 84.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.21 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 70.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1595.26 ms. Allocated memory is still 111.1 MB. Free memory was 69.7 MB in the beginning and 58.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.85 ms. Allocated memory is still 111.1 MB. Free memory was 58.8 MB in the beginning and 56.8 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [N=1] [L30] COND TRUE i