./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test21-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF --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 712c5452cee1b4c02208da17c2cf0dc9636485194e157c656e1372fe334269f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:31:59,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:31:59,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:31:59,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:31:59,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:31:59,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:31:59,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:31:59,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:32:00,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:32:00,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:32:00,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:32:00,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:32:00,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:32:00,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:32:00,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:32:00,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:32:00,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:32:00,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:32:00,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:32:00,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:32:00,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:32:00,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:32:00,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:32:00,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:32:00,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:32:00,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:32:00,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:32:00,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:32:00,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:32:00,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:32:00,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:32:00,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:32:00,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:32:00,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:32:00,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:32:00,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:32:00,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:32:00,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:32:00,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:32:00,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:32:00,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:32:00,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:32:00,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:32:00,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:32:00,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:32:00,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:32:00,096 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:32:00,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:32:00,097 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:32:00,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:32:00,098 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:32:00,098 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:32:00,099 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:32:00,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:32:00,099 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:32:00,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:32:00,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:32:00,101 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:32:00,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:32:00,102 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:32:00,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:32:00,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:32:00,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:32:00,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:32:00,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:32:00,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:32:00,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:32:00,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:32:00,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:32:00,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:32:00,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:32:00,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:32:00,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:32:00,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:00,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:32:00,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:32:00,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:32:00,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:32:00,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:32:00,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:32:00,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:32:00,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:32:00,111 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_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 712c5452cee1b4c02208da17c2cf0dc9636485194e157c656e1372fe334269f7 [2021-11-13 02:32:00,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:32:00,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:32:00,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:32:00,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:32:00,486 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:32:00,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-regression/test21-2.c [2021-11-13 02:32:00,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/data/32788c110/dbd037feef3c445fa50fe7552ce0f077/FLAG277239aa0 [2021-11-13 02:32:01,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:32:01,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/sv-benchmarks/c/ldv-regression/test21-2.c [2021-11-13 02:32:01,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/data/32788c110/dbd037feef3c445fa50fe7552ce0f077/FLAG277239aa0 [2021-11-13 02:32:01,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/data/32788c110/dbd037feef3c445fa50fe7552ce0f077 [2021-11-13 02:32:01,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:32:01,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:32:01,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:01,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:32:01,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:32:01,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:01,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119461a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01, skipping insertion in model container [2021-11-13 02:32:01,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:01,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:32:01,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:01,867 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/sv-benchmarks/c/ldv-regression/test21-2.c[892,905] [2021-11-13 02:32:01,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:01,884 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:32:01,910 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/sv-benchmarks/c/ldv-regression/test21-2.c[892,905] [2021-11-13 02:32:01,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:01,939 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:32:01,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01 WrapperNode [2021-11-13 02:32:01,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:01,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:01,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:32:01,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:32:01,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:01,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:01,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:01,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:32:01,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:32:01,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:32:02,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:32:02,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:32:02,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:32:02,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:32:02,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (1/1) ... [2021-11-13 02:32:02,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:02,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:32:02,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:32:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:32:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:32:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 02:32:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-11-13 02:32:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-11-13 02:32:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:32:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:32:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 02:32:02,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:32:02,538 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:32:02,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:02 BoogieIcfgContainer [2021-11-13 02:32:02,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:32:02,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:32:02,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:32:02,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:32:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:32:01" (1/3) ... [2021-11-13 02:32:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de4499e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:02, skipping insertion in model container [2021-11-13 02:32:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:01" (2/3) ... [2021-11-13 02:32:02,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de4499e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:32:02, skipping insertion in model container [2021-11-13 02:32:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:02" (3/3) ... [2021-11-13 02:32:02,552 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2021-11-13 02:32:02,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:32:02,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:32:02,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:32:02,645 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 [2021-11-13 02:32:02,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:32:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:32:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:32:02,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:02,688 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:02,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1315939675, now seen corresponding path program 1 times [2021-11-13 02:32:02,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:32:02,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281920586] [2021-11-13 02:32:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:02,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:32:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:03,043 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:32:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:32:03,169 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:32:03,171 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:32:03,172 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:32:03,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:32:03,180 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 02:32:03,184 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:32:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:32:03 BoogieIcfgContainer [2021-11-13 02:32:03,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:32:03,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:32:03,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:32:03,242 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:32:03,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:32:02" (3/4) ... [2021-11-13 02:32:03,245 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-13 02:32:03,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:32:03,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:32:03,304 INFO L158 Benchmark]: Toolchain (without parser) took 1800.97ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 54.7MB in the beginning and 89.7MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:32:03,305 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 70.5MB in the end (delta: 92.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:32:03,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.63ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 54.4MB in the beginning and 93.9MB in the end (delta: -39.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-13 02:32:03,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.44ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 92.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:32:03,308 INFO L158 Benchmark]: Boogie Preprocessor took 54.21ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 91.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:32:03,308 INFO L158 Benchmark]: RCFGBuilder took 488.31ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 78.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:32:03,309 INFO L158 Benchmark]: TraceAbstraction took 685.63ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 92.3MB in the end (delta: -14.2MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-11-13 02:32:03,310 INFO L158 Benchmark]: Witness Printer took 69.23ms. Allocated memory is still 117.4MB. 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. [2021-11-13 02:32:03,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 90.2MB. Free memory was 70.6MB in the beginning and 70.5MB in the end (delta: 92.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.63ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 54.4MB in the beginning and 93.9MB in the end (delta: -39.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.44ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 92.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.21ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 91.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.31ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 78.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 685.63ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 92.3MB in the end (delta: -14.2MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Witness Printer took 69.23ms. Allocated memory is still 117.4MB. 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: 44]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] struct dummy d1, d2; [L34] CALL init() [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() [L35] CALL, EXPR get_dummy() VAL [d1={7:0}, d2={9:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={7:0}, d2={9:0}, get_dummy()={7:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] CALL, EXPR get_dummy() VAL [d1={7:0}, d2={9:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={7:0}, d2={9:0}, get_dummy()={7:0}, pd1={7:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 [L37] CALL, EXPR check(pd1, pd2) [L29] EXPR s1->a [L29] EXPR s2->b [L29] return s1->a == s2->b; [L37] RET, EXPR check(pd1, pd2) [L37] COND TRUE !check(pd1, pd2) [L44] reach_error() VAL [d1={7:0}, d2={9:0}, pd1={7:0}, pd2={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-13 02:32:03,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8548bcd8-2b5a-43b2-b188-dd155b571218/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE