./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bc09bd64500ce84828799e1b8f3bf98a7ee19cb7e359a47594550eda9829607 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:25:07,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:25:07,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:25:07,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:25:07,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:25:07,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:25:07,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:25:07,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:25:07,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:25:07,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:25:07,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:25:07,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:25:07,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:25:07,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:25:07,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:25:07,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:25:07,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:25:07,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:25:07,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:25:07,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:25:07,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:25:07,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:25:07,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:25:07,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:25:07,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:25:07,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:25:07,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:25:07,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:25:07,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:25:07,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:25:07,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:25:07,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:25:07,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:25:07,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:25:07,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:25:07,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:25:07,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:25:07,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:25:07,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:25:07,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:25:07,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:25:07,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:25:07,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:25:07,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:25:07,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:25:07,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:25:07,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:25:07,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:25:07,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:25:07,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:25:07,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:25:07,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:25:07,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:25:07,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:25:07,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:25:07,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:25:07,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:25:07,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:25:07,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:25:07,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:25:07,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:25:07,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:25:07,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:25:07,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:25:07,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:25:07,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:25:07,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:25:07,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:25:07,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:25:07,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:25:07,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:25:07,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:25:07,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:25:07,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:25:07,531 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:25:07,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:25:07,532 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bc09bd64500ce84828799e1b8f3bf98a7ee19cb7e359a47594550eda9829607 [2022-11-23 03:25:07,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:25:07,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:25:07,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:25:07,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:25:07,938 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:25:07,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/array-fpi/ss2f.c [2022-11-23 03:25:11,251 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:25:11,584 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:25:11,585 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/sv-benchmarks/c/array-fpi/ss2f.c [2022-11-23 03:25:11,591 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/data/ee7b3d4fd/252c7eeff6d24c3f9b82da1c6f39a6b1/FLAG07d35a6b5 [2022-11-23 03:25:11,606 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/data/ee7b3d4fd/252c7eeff6d24c3f9b82da1c6f39a6b1 [2022-11-23 03:25:11,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:25:11,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:25:11,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:25:11,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:25:11,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:25:11,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:11,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578050a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11, skipping insertion in model container [2022-11-23 03:25:11,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:11,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:25:11,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:25:11,814 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/sv-benchmarks/c/array-fpi/ss2f.c[587,600] [2022-11-23 03:25:11,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:25:11,886 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:25:11,909 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/sv-benchmarks/c/array-fpi/ss2f.c[587,600] [2022-11-23 03:25:11,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:25:11,955 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:25:11,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11 WrapperNode [2022-11-23 03:25:11,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:25:11,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:25:11,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:25:11,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:25:11,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:11,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,024 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2022-11-23 03:25:12,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:25:12,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:25:12,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:25:12,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:25:12,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:25:12,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:25:12,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:25:12,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:25:12,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (1/1) ... [2022-11-23 03:25:12,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:25:12,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:12,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:25:12,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:25:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:25:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:25:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:25:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:25:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:25:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:25:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:25:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:25:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:25:12,279 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:25:12,281 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:25:12,589 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:25:12,595 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:25:12,595 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 03:25:12,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:12 BoogieIcfgContainer [2022-11-23 03:25:12,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:25:12,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:25:12,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:25:12,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:25:12,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:25:11" (1/3) ... [2022-11-23 03:25:12,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8da431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:12, skipping insertion in model container [2022-11-23 03:25:12,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:11" (2/3) ... [2022-11-23 03:25:12,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8da431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:12, skipping insertion in model container [2022-11-23 03:25:12,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:12" (3/3) ... [2022-11-23 03:25:12,624 INFO L112 eAbstractionObserver]: Analyzing ICFG ss2f.c [2022-11-23 03:25:12,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:25:12,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:25:12,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:25:12,772 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4cecf6f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:25:12,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:25:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 03:25:12,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:25:12,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:25:12,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:25:12,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -642180410, now seen corresponding path program 1 times [2022-11-23 03:25:12,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:12,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556905495] [2022-11-23 03:25:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:13,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556905495] [2022-11-23 03:25:13,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 03:25:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658473816] [2022-11-23 03:25:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:13,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:13,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:25:13,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:25:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:13,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:25:13,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:25:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:25:13,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:25:13,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658473816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:25:13,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:25:13,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:25:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558034308] [2022-11-23 03:25:13,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:25:13,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:25:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:25:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:25:13,203 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:25:13,236 INFO L93 Difference]: Finished difference Result 62 states and 92 transitions. [2022-11-23 03:25:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:25:13,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2022-11-23 03:25:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:25:13,250 INFO L225 Difference]: With dead ends: 62 [2022-11-23 03:25:13,251 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 03:25:13,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:25:13,264 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:25:13,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:25:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 03:25:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-23 03:25:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-23 03:25:13,311 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2022-11-23 03:25:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:25:13,312 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-23 03:25:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-23 03:25:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 03:25:13,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:25:13,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:25:13,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:25:13,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:13,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:25:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1011332042, now seen corresponding path program 1 times [2022-11-23 03:25:13,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:13,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995459962] [2022-11-23 03:25:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:13,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:25:13,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995459962] [2022-11-23 03:25:13,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 03:25:13,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476574398] [2022-11-23 03:25:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:13,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:13,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:13,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:25:13,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:25:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:25:13,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:25:13,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:25:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:25:13,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:25:13,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476574398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:25:13,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:25:13,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:25:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499337763] [2022-11-23 03:25:13,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:25:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:25:13,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:25:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:25:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:25:13,874 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:25:13,977 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-23 03:25:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:25:13,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-23 03:25:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:25:13,979 INFO L225 Difference]: With dead ends: 69 [2022-11-23 03:25:13,980 INFO L226 Difference]: Without dead ends: 47 [2022-11-23 03:25:13,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:25:13,982 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:25:13,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 19 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:25:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-23 03:25:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-11-23 03:25:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-23 03:25:13,990 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2022-11-23 03:25:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:25:13,991 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-23 03:25:13,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:25:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-23 03:25:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 03:25:13,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:25:13,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:25:13,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:25:14,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:14,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:25:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:25:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1890076394, now seen corresponding path program 1 times [2022-11-23 03:25:14,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:25:14,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432695987] [2022-11-23 03:25:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:14,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:25:14,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:25:14,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851561226] [2022-11-23 03:25:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:25:14,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:14,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:25:14,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:25:14,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:25:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:25:14,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:25:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:25:14,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:25:14,486 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:25:14,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 03:25:14,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:25:14,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:25:14,715 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 03:25:14,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:25:14,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:25:14 BoogieIcfgContainer [2022-11-23 03:25:14,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:25:14,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:25:14,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:25:14,794 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:25:14,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:12" (3/4) ... [2022-11-23 03:25:14,797 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 03:25:14,882 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc35-5c35-459d-b146-385ef2c1c066/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:25:14,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:25:14,883 INFO L158 Benchmark]: Toolchain (without parser) took 3272.05ms. Allocated memory is still 165.7MB. Free memory was 134.1MB in the beginning and 121.9MB in the end (delta: 12.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-23 03:25:14,883 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 90.0MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:25:14,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.68ms. Allocated memory is still 165.7MB. Free memory was 133.3MB in the beginning and 122.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:25:14,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.68ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:25:14,885 INFO L158 Benchmark]: Boogie Preprocessor took 59.28ms. Allocated memory is still 165.7MB. Free memory was 120.7MB in the beginning and 119.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:25:14,885 INFO L158 Benchmark]: RCFGBuilder took 512.35ms. Allocated memory is still 165.7MB. Free memory was 119.4MB in the beginning and 106.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 03:25:14,886 INFO L158 Benchmark]: TraceAbstraction took 2188.89ms. Allocated memory is still 165.7MB. Free memory was 105.2MB in the beginning and 124.0MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:25:14,886 INFO L158 Benchmark]: Witness Printer took 88.86ms. Allocated memory is still 165.7MB. Free memory was 124.0MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:25:14,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 90.0MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.68ms. Allocated memory is still 165.7MB. Free memory was 133.3MB in the beginning and 122.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.68ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.28ms. Allocated memory is still 165.7MB. Free memory was 120.7MB in the beginning and 119.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 512.35ms. Allocated memory is still 165.7MB. Free memory was 119.4MB in the beginning and 106.0MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2188.89ms. Allocated memory is still 165.7MB. Free memory was 105.2MB in the beginning and 124.0MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 88.86ms. Allocated memory is still 165.7MB. Free memory was 124.0MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [cond=1, N=1, unknown-#in~cond-unknown=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [a={-1:0}, i=0, N=1, sum={4:0}] [L32] COND TRUE i