./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/indp4f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V --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 d0e87381a99f974959089d289c3e17de6c0fbe6e5c639d91434f52ec27b6b2ed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:03:07,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:03:07,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:03:08,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:03:08,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:03:08,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:03:08,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:03:08,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:03:08,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:03:08,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:03:08,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:03:08,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:03:08,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:03:08,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:03:08,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:03:08,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:03:08,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:03:08,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:03:08,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:03:08,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:03:08,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:03:08,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:03:08,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:03:08,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:03:08,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:03:08,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:03:08,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:03:08,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:03:08,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:03:08,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:03:08,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:03:08,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:03:08,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:03:08,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:03:08,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:03:08,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:03:08,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:03:08,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:03:08,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:03:08,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:03:08,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:03:08,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:03:08,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:03:08,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:03:08,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:03:08,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:03:08,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:03:08,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:03:08,190 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:03:08,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:03:08,190 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:03:08,191 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:03:08,192 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:03:08,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:03:08,193 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:03:08,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:03:08,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:03:08,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:03:08,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:03:08,194 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:03:08,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:03:08,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:03:08,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:03:08,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:03:08,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:03:08,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:03:08,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:03:08,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:03:08,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:03:08,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:03:08,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:03:08,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:03:08,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:03:08,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:03:08,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:03:08,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:03:08,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:03:08,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:03:08,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:03:08,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:03:08,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:03:08,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:03:08,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:03:08,201 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0e87381a99f974959089d289c3e17de6c0fbe6e5c639d91434f52ec27b6b2ed [2021-11-23 03:03:08,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:03:08,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:03:08,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:03:08,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:03:08,572 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:03:08,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/array-fpi/indp4f.c [2021-11-23 03:03:08,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/data/92c3bb491/7efa3419757146eb9770bbbb409ea6d7/FLAGb15d1a25d [2021-11-23 03:03:09,165 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:03:09,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/sv-benchmarks/c/array-fpi/indp4f.c [2021-11-23 03:03:09,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/data/92c3bb491/7efa3419757146eb9770bbbb409ea6d7/FLAGb15d1a25d [2021-11-23 03:03:09,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/data/92c3bb491/7efa3419757146eb9770bbbb409ea6d7 [2021-11-23 03:03:09,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:03:09,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:03:09,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:03:09,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:03:09,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:03:09,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c7c69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09, skipping insertion in model container [2021-11-23 03:03:09,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:03:09,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:03:09,761 WARN L230 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_7f21e0c8-9130-471d-8fd0-ad0f15912e29/sv-benchmarks/c/array-fpi/indp4f.c[589,602] [2021-11-23 03:03:09,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:03:09,800 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:03:09,817 WARN L230 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_7f21e0c8-9130-471d-8fd0-ad0f15912e29/sv-benchmarks/c/array-fpi/indp4f.c[589,602] [2021-11-23 03:03:09,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:03:09,854 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:03:09,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09 WrapperNode [2021-11-23 03:03:09,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:03:09,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:03:09,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:03:09,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:03:09,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,899 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-23 03:03:09,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:03:09,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:03:09,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:03:09,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:03:09,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:03:09,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:03:09,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:03:09,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:03:09,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (1/1) ... [2021-11-23 03:03:09,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:03:09,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:03:09,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:03:09,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:03:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:03:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:03:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:03:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:03:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:03:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:03:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:03:10,108 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:03:10,111 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:03:10,371 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:03:10,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:03:10,438 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:03:10,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:10 BoogieIcfgContainer [2021-11-23 03:03:10,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:03:10,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:03:10,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:03:10,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:03:10,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:03:09" (1/3) ... [2021-11-23 03:03:10,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7916e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:03:10, skipping insertion in model container [2021-11-23 03:03:10,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:09" (2/3) ... [2021-11-23 03:03:10,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7916e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:03:10, skipping insertion in model container [2021-11-23 03:03:10,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:10" (3/3) ... [2021-11-23 03:03:10,450 INFO L111 eAbstractionObserver]: Analyzing ICFG indp4f.c [2021-11-23 03:03:10,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:03:10,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:03:10,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:03:10,530 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:03:10,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:03:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:03:10,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:10,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:10,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:10,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1718194540, now seen corresponding path program 1 times [2021-11-23 03:03:10,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:10,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536783160] [2021-11-23 03:03:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:10,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:03:10,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:10,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536783160] [2021-11-23 03:03:10,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536783160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:10,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:10,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:03:10,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613356612] [2021-11-23 03:03:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:10,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:10,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:10,944 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:10,993 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2021-11-23 03:03:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:03:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:03:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:11,006 INFO L225 Difference]: With dead ends: 22 [2021-11-23 03:03:11,007 INFO L226 Difference]: Without dead ends: 11 [2021-11-23 03:03:11,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:03:11,015 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:11,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:03:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-23 03:03:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-23 03:03:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-11-23 03:03:11,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2021-11-23 03:03:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:11,053 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-23 03:03:11,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-11-23 03:03:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:03:11,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:11,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:11,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:03:11,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:11,057 INFO L85 PathProgramCache]: Analyzing trace with hash 473790610, now seen corresponding path program 1 times [2021-11-23 03:03:11,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:11,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457495696] [2021-11-23 03:03:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:11,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:11,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:03:11,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848660012] [2021-11-23 03:03:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:11,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:03:11,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:03:11,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:03:11,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:03:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:11,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:03:11,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:03:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:03:11,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:03:11,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457495696] [2021-11-23 03:03:11,226 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:03:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848660012] [2021-11-23 03:03:11,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848660012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:11,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:03:11,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:03:11,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554863269] [2021-11-23 03:03:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:11,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:03:11,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:03:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:03:11,232 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:03:11,291 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-11-23 03:03:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:03:11,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-11-23 03:03:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:03:11,293 INFO L225 Difference]: With dead ends: 24 [2021-11-23 03:03:11,293 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 03:03:11,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:03:11,296 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:03:11,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:03:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 03:03:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-11-23 03:03:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-23 03:03:11,303 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2021-11-23 03:03:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:03:11,304 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-23 03:03:11,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:03:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-23 03:03:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:03:11,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:03:11,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:03:11,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:03:11,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:03:11,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:03:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:03:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -905852742, now seen corresponding path program 1 times [2021-11-23 03:03:11,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:03:11,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474407671] [2021-11-23 03:03:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:11,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:03:11,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:03:11,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861282232] [2021-11-23 03:03:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:11,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:03:11,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:03:11,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:03:11,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:03:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:03:11,647 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:03:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:03:11,709 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:03:11,709 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:03:11,712 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:03:11,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:03:11,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:03:11,929 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 03:03:11,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:03:11,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:03:11 BoogieIcfgContainer [2021-11-23 03:03:11,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:03:11,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:03:11,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:03:11,986 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:03:11,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:03:10" (3/4) ... [2021-11-23 03:03:11,989 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:03:12,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f21e0c8-9130-471d-8fd0-ad0f15912e29/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:03:12,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:03:12,069 INFO L158 Benchmark]: Toolchain (without parser) took 2539.18ms. Allocated memory was 100.7MB in the beginning and 140.5MB in the end (delta: 39.8MB). Free memory was 67.0MB in the beginning and 89.7MB in the end (delta: -22.7MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,069 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 14.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:03:12,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.24ms. Allocated memory is still 100.7MB. Free memory was 66.8MB in the beginning and 76.1MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.80ms. Allocated memory is still 100.7MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,071 INFO L158 Benchmark]: Boogie Preprocessor took 37.67ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 73.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,071 INFO L158 Benchmark]: RCFGBuilder took 502.63ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 61.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,072 INFO L158 Benchmark]: TraceAbstraction took 1541.78ms. Allocated memory was 100.7MB in the beginning and 140.5MB in the end (delta: 39.8MB). Free memory was 61.4MB in the beginning and 91.8MB in the end (delta: -30.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,072 INFO L158 Benchmark]: Witness Printer took 82.30ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 89.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:03:12,076 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 100.7MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 14.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.24ms. Allocated memory is still 100.7MB. Free memory was 66.8MB in the beginning and 76.1MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.80ms. Allocated memory is still 100.7MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.67ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 73.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 502.63ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 61.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1541.78ms. Allocated memory was 100.7MB in the beginning and 140.5MB in the end (delta: 39.8MB). Free memory was 61.4MB in the beginning and 91.8MB in the end (delta: -30.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Witness Printer took 82.30ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 89.7MB 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 *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [a={-1:0}, i=0, N=1] [L30] COND TRUE i