./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs --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 011059f292c40d2fbcd17f8972992ba27e82eff797e3cbf3b3efd2a0f1ed8c70 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:42:14,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:42:14,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:42:15,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:42:15,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:42:15,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:42:15,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:42:15,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:42:15,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:42:15,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:42:15,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:42:15,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:42:15,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:42:15,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:42:15,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:42:15,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:42:15,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:42:15,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:42:15,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:42:15,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:42:15,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:42:15,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:42:15,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:42:15,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:42:15,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:42:15,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:42:15,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:42:15,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:42:15,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:42:15,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:42:15,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:42:15,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:42:15,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:42:15,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:42:15,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:42:15,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:42:15,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:42:15,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:42:15,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:42:15,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:42:15,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:42:15,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:42:15,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:42:15,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:42:15,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:42:15,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:42:15,183 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:42:15,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:42:15,184 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:42:15,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:42:15,185 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:42:15,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:42:15,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:42:15,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:42:15,196 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:42:15,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:42:15,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:42:15,197 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:42:15,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:42:15,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:42:15,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:42:15,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:42:15,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:42:15,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:42:15,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:42:15,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:42:15,201 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:42:15,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:42:15,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:42:15,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:42:15,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:42:15,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:42:15,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:42:15,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:42:15,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:42:15,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:42:15,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:42:15,208 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:42:15,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:42:15,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:42:15,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:42:15,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:42:15,209 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_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011059f292c40d2fbcd17f8972992ba27e82eff797e3cbf3b3efd2a0f1ed8c70 [2021-11-19 13:42:15,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:42:15,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:42:15,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:42:15,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:42:15,618 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:42:15,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/xcsp/Haystacks-08.c [2021-11-19 13:42:15,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/data/239949fa7/33a7e120f68d4a348fc6d9688f080a72/FLAG3683e1259 [2021-11-19 13:42:16,381 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:42:16,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/sv-benchmarks/c/xcsp/Haystacks-08.c [2021-11-19 13:42:16,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/data/239949fa7/33a7e120f68d4a348fc6d9688f080a72/FLAG3683e1259 [2021-11-19 13:42:16,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/data/239949fa7/33a7e120f68d4a348fc6d9688f080a72 [2021-11-19 13:42:16,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:42:16,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:42:16,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:42:16,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:42:16,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:42:16,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:16" (1/1) ... [2021-11-19 13:42:16,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551224a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:16, skipping insertion in model container [2021-11-19 13:42:16,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:16" (1/1) ... [2021-11-19 13:42:16,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:42:16,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:42:17,191 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_28944b8b-ae0e-41b0-a405-f050ce45b6d5/sv-benchmarks/c/xcsp/Haystacks-08.c[16029,16042] [2021-11-19 13:42:17,212 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:42:17,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:42:17,378 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_28944b8b-ae0e-41b0-a405-f050ce45b6d5/sv-benchmarks/c/xcsp/Haystacks-08.c[16029,16042] [2021-11-19 13:42:17,383 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:42:17,414 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:42:17,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17 WrapperNode [2021-11-19 13:42:17,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:42:17,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:42:17,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:42:17,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:42:17,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,534 INFO L137 Inliner]: procedures = 13, calls = 415, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 681 [2021-11-19 13:42:17,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:42:17,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:42:17,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:42:17,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:42:17,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:42:17,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:42:17,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:42:17,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:42:17,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (1/1) ... [2021-11-19 13:42:17,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:42:17,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:17,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:42:17,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:42:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:42:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:42:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:42:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:42:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2021-11-19 13:42:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2021-11-19 13:42:17,970 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:42:17,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:42:18,938 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:42:19,053 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:42:19,053 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:42:19,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:19 BoogieIcfgContainer [2021-11-19 13:42:19,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:42:19,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:42:19,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:42:19,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:42:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:42:16" (1/3) ... [2021-11-19 13:42:19,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:19, skipping insertion in model container [2021-11-19 13:42:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:17" (2/3) ... [2021-11-19 13:42:19,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:19, skipping insertion in model container [2021-11-19 13:42:19,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:19" (3/3) ... [2021-11-19 13:42:19,092 INFO L111 eAbstractionObserver]: Analyzing ICFG Haystacks-08.c [2021-11-19 13:42:19,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:42:19,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:42:19,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:42:19,230 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 [2021-11-19 13:42:19,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:42:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 68 states have internal predecessors, (68), 408 states have call successors, (408), 1 states have call predecessors, (408), 1 states have return successors, (408), 408 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-19 13:42:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1291 [2021-11-19 13:42:19,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:19,434 INFO L514 BasicCegarLoop]: trace histogram [408, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:19,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -220652781, now seen corresponding path program 1 times [2021-11-19 13:42:19,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:19,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039112909] [2021-11-19 13:42:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:19,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:20,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:42:20,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296179632] [2021-11-19 13:42:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:20,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:42:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:20,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:42:20,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28944b8b-ae0e-41b0-a405-f050ce45b6d5/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process