./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ss3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9 --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 76ae16499864b13b3948e2270be5b31e7a14f523ef5d86d5f7c4d24360e8b13e --- 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-6b4ec56 [2022-11-20 20:40:42,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:40:42,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:40:42,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:40:42,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:40:42,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:40:42,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:40:42,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:40:42,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:40:42,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:40:42,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:40:42,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:40:42,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:40:42,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:40:42,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:40:42,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:40:42,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:40:42,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:40:42,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:40:42,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:40:42,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:40:42,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:40:42,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:40:42,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:40:42,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:40:42,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:40:42,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:40:42,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:40:42,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:40:42,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:40:42,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:40:42,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:40:42,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:40:42,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:40:42,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:40:42,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:40:42,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:40:42,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:40:42,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:40:42,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:40:42,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:40:42,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:40:42,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:40:42,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:40:42,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:40:42,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:40:42,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:40:42,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:40:42,692 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:40:42,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:40:42,693 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:40:42,693 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:40:42,693 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:40:42,693 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:40:42,694 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:40:42,694 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:40:42,694 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:40:42,695 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:40:42,695 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:40:42,695 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:40:42,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:40:42,696 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:40:42,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:40:42,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:40:42,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:40:42,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:40:42,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:40:42,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:40:42,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:40:42,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:40:42,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:40:42,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:40:42,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:40:42,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:40:42,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:40:42,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:40:42,701 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:40:42,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:40:42,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:40:42,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:40:42,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:40:42,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:40:42,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:40:42,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76ae16499864b13b3948e2270be5b31e7a14f523ef5d86d5f7c4d24360e8b13e [2022-11-20 20:40:43,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:40:43,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:40:43,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:40:43,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:40:43,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:40:43,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/array-fpi/ss3f.c [2022-11-20 20:40:46,636 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:40:46,857 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:40:46,857 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/sv-benchmarks/c/array-fpi/ss3f.c [2022-11-20 20:40:46,866 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/data/a6fcafefd/4f896fffbd964fccaae8664b79676389/FLAG927747e4c [2022-11-20 20:40:46,890 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/data/a6fcafefd/4f896fffbd964fccaae8664b79676389 [2022-11-20 20:40:46,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:40:46,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:40:46,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:40:46,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:40:46,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:40:46,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:40:46" (1/1) ... [2022-11-20 20:40:46,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672141f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:46, skipping insertion in model container [2022-11-20 20:40:46,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:40:46" (1/1) ... [2022-11-20 20:40:46,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:40:46,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:40:47,130 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_c8c5c306-a279-4ff7-a8bc-35f358f7b062/sv-benchmarks/c/array-fpi/ss3f.c[587,600] [2022-11-20 20:40:47,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:40:47,167 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:40:47,180 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_c8c5c306-a279-4ff7-a8bc-35f358f7b062/sv-benchmarks/c/array-fpi/ss3f.c[587,600] [2022-11-20 20:40:47,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:40:47,210 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:40:47,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47 WrapperNode [2022-11-20 20:40:47,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:40:47,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:40:47,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:40:47,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:40:47,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,285 INFO L138 Inliner]: procedures = 17, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2022-11-20 20:40:47,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:40:47,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:40:47,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:40:47,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:40:47,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,341 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:40:47,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:40:47,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:40:47,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:40:47,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (1/1) ... [2022-11-20 20:40:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:40:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:40:47,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:40:47,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:40:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:40:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:40:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:40:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:40:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:40:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:40:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:40:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:40:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:40:47,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:40:47,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:40:47,928 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:40:47,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:40:47,984 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 20:40:47,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:40:47 BoogieIcfgContainer [2022-11-20 20:40:47,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:40:47,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:40:47,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:40:47,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:40:47,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:40:46" (1/3) ... [2022-11-20 20:40:47,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd272f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:40:47, skipping insertion in model container [2022-11-20 20:40:47,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:40:47" (2/3) ... [2022-11-20 20:40:47,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd272f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:40:47, skipping insertion in model container [2022-11-20 20:40:47,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:40:47" (3/3) ... [2022-11-20 20:40:47,998 INFO L112 eAbstractionObserver]: Analyzing ICFG ss3f.c [2022-11-20 20:40:48,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:40:48,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:40:48,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:40:48,092 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1375a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:40:48,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:40:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-11-20 20:40:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:40:48,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:40:48,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:40:48,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:40:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:40:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1473858574, now seen corresponding path program 1 times [2022-11-20 20:40:48,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:40:48,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458904517] [2022-11-20 20:40:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:40:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:40:48,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:40:48,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458904517] [2022-11-20 20:40:48,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 20:40:48,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098800360] [2022-11-20 20:40:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:48,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:48,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:40:48,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:40:48,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:40:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:40:48,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:40:48,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:40:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:40:48,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:40:48,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098800360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:40:48,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:40:48,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:40:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473416712] [2022-11-20 20:40:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:40:48,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:40:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:40:48,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:40:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:40:48,774 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:40:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:40:48,865 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2022-11-20 20:40:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:40:48,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 20:40:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:40:48,888 INFO L225 Difference]: With dead ends: 24 [2022-11-20 20:40:48,889 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 20:40:48,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:40:48,900 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:40:48,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:40:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 20:40:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-20 20:40:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:40:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2022-11-20 20:40:48,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2022-11-20 20:40:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:40:48,946 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-11-20 20:40:48,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:40:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2022-11-20 20:40:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:40:48,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:40:48,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:40:48,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:40:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 20:40:49,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:40:49,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:40:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash -332908202, now seen corresponding path program 1 times [2022-11-20 20:40:49,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:40:49,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48770435] [2022-11-20 20:40:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:49,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:40:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:40:49,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:40:49,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48770435] [2022-11-20 20:40:49,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 20:40:49,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453713994] [2022-11-20 20:40:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:49,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:40:49,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:40:49,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:40:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:40:49,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:40:49,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:40:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:40:49,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:40:49,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453713994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:40:49,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:40:49,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:40:49,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060238916] [2022-11-20 20:40:49,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:40:49,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:40:49,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:40:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:40:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:40:49,354 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 20:40:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:40:49,417 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2022-11-20 20:40:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:40:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 20:40:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:40:49,421 INFO L225 Difference]: With dead ends: 21 [2022-11-20 20:40:49,421 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 20:40:49,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:40:49,424 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:40:49,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:40:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 20:40:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 20:40:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-20 20:40:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-20 20:40:49,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2022-11-20 20:40:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:40:49,437 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-20 20:40:49,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 20:40:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-20 20:40:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:40:49,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:40:49,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:40:49,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:40:49,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:49,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:40:49,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:40:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 852146504, now seen corresponding path program 1 times [2022-11-20 20:40:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:40:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619110894] [2022-11-20 20:40:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:40:49,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:40:49,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178584255] [2022-11-20 20:40:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:40:49,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:40:49,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:40:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:40:49,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:40:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:40:49,898 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:40:49,898 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:40:49,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:40:49,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:40:50,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:50,106 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 20:40:50,111 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:40:50,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:40:50 BoogieIcfgContainer [2022-11-20 20:40:50,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:40:50,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:40:50,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:40:50,151 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:40:50,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:40:47" (3/4) ... [2022-11-20 20:40:50,154 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 20:40:50,224 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8c5c306-a279-4ff7-a8bc-35f358f7b062/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:40:50,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:40:50,225 INFO L158 Benchmark]: Toolchain (without parser) took 3325.81ms. Allocated memory is still 148.9MB. Free memory was 105.4MB in the beginning and 80.9MB in the end (delta: 24.5MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2022-11-20 20:40:50,225 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:40:50,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.42ms. Allocated memory is still 148.9MB. Free memory was 105.0MB in the beginning and 94.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:40:50,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.80ms. Allocated memory is still 148.9MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:40:50,236 INFO L158 Benchmark]: Boogie Preprocessor took 68.21ms. Allocated memory is still 148.9MB. Free memory was 92.8MB in the beginning and 91.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:40:50,237 INFO L158 Benchmark]: RCFGBuilder took 631.76ms. Allocated memory is still 148.9MB. Free memory was 91.1MB in the beginning and 75.7MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:40:50,237 INFO L158 Benchmark]: TraceAbstraction took 2159.56ms. Allocated memory is still 148.9MB. Free memory was 75.2MB in the beginning and 82.9MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:40:50,238 INFO L158 Benchmark]: Witness Printer took 74.20ms. Allocated memory is still 148.9MB. Free memory was 82.9MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:40:50,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.42ms. Allocated memory is still 148.9MB. Free memory was 105.0MB in the beginning and 94.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.80ms. Allocated memory is still 148.9MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.21ms. Allocated memory is still 148.9MB. Free memory was 92.8MB in the beginning and 91.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 631.76ms. Allocated memory is still 148.9MB. Free memory was 91.1MB in the beginning and 75.7MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2159.56ms. Allocated memory is still 148.9MB. Free memory was 75.2MB in the beginning and 82.9MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.20ms. Allocated memory is still 148.9MB. Free memory was 82.9MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [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