./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8 --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 48a71b8ca70fc47715ea920e2ebb430a98285d213f263d42bc1c792f2acacf30 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:16,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:16,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:16,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:16,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:16,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:16,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:16,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:16,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:17,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:17,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:17,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:17,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:17,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:17,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:17,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:17,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:17,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:17,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:17,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:17,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:17,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:17,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:17,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:17,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:17,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:17,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:17,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:17,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:17,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:17,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:17,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:17,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:17,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:17,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:17,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:17,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:17,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:17,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:17,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:17,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:17,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:34:17,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:17,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:17,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:17,104 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:17,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:17,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:17,105 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:34:17,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:17,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:17,112 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:34:17,113 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:34:17,113 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:17,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:34:17,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:34:17,114 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:34:17,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:17,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:34:17,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:34:17,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:34:17,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:17,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:17,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:17,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:17,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:17,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:34:17,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:17,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:17,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:17,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:17,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:17,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:17,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:17,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:17,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:17,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:34:17,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:34:17,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:17,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:17,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:17,122 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_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71b8ca70fc47715ea920e2ebb430a98285d213f263d42bc1c792f2acacf30 [2021-11-07 01:34:17,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:17,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:17,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:17,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:17,488 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:17,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/xcsp/Haystacks-09.c [2021-11-07 01:34:17,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/data/8c098fca5/0c107ce31b484e7a81ccf803bdcc4b80/FLAG8503fb1be [2021-11-07 01:34:18,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:18,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/sv-benchmarks/c/xcsp/Haystacks-09.c [2021-11-07 01:34:18,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/data/8c098fca5/0c107ce31b484e7a81ccf803bdcc4b80/FLAG8503fb1be [2021-11-07 01:34:18,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/data/8c098fca5/0c107ce31b484e7a81ccf803bdcc4b80 [2021-11-07 01:34:18,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:18,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:18,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:18,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:18,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:18,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:18" (1/1) ... [2021-11-07 01:34:18,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699c3617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:18, skipping insertion in model container [2021-11-07 01:34:18,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:18" (1/1) ... [2021-11-07 01:34:18,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:18,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:18,913 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_d0eacdad-77fd-4200-9102-c29aa21fead4/sv-benchmarks/c/xcsp/Haystacks-09.c[21793,21806] [2021-11-07 01:34:18,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:18,938 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:34:19,025 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_d0eacdad-77fd-4200-9102-c29aa21fead4/sv-benchmarks/c/xcsp/Haystacks-09.c[21793,21806] [2021-11-07 01:34:19,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:19,063 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:34:19,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19 WrapperNode [2021-11-07 01:34:19,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:19,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:19,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:34:19,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:34:19,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:19,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:34:19,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:34:19,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:34:19,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:34:19,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:34:19,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:34:19,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:34:19,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (1/1) ... [2021-11-07 01:34:19,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:19,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:34:19,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:34:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:34:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:34:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:34:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:34:59,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:34:59,983 INFO L299 CfgBuilder]: Removed 1120 assume(true) statements. [2021-11-07 01:34:59,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:59 BoogieIcfgContainer [2021-11-07 01:34:59,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:34:59,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:34:59,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:34:59,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:34:59,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:34:18" (1/3) ... [2021-11-07 01:34:59,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e06ded9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:59, skipping insertion in model container [2021-11-07 01:34:59,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:19" (2/3) ... [2021-11-07 01:34:59,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e06ded9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:59, skipping insertion in model container [2021-11-07 01:34:59,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:59" (3/3) ... [2021-11-07 01:34:59,997 INFO L111 eAbstractionObserver]: Analyzing ICFG Haystacks-09.c [2021-11-07 01:35:00,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:35:00,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:35:00,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:35:00,059 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 [2021-11-07 01:35:00,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:35:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-07 01:35:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-07 01:35:00,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:00,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-07 01:35:00,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:35:00,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash 178097, now seen corresponding path program 1 times [2021-11-07 01:35:00,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:35:00,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477699155] [2021-11-07 01:35:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:00,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:35:00,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:35:00,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942946277] [2021-11-07 01:35:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:00,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:00,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:00,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:00,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eacdad-77fd-4200-9102-c29aa21fead4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process