./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-16.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_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/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_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/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_067d716d-de73-4294-ba06-e9f7dd6c4140/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 69674fa9bac4462fab44fafedf177d67851aa51f3860d6fe181d82fe0b856912 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:56:10,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:56:10,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:56:10,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:56:10,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:56:10,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:56:10,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:56:10,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:56:10,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:56:10,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:56:10,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:56:10,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:56:10,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:56:10,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:56:10,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:56:10,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:56:10,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:56:10,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:56:10,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:56:10,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:56:10,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:56:10,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:56:10,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:56:10,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:56:10,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:56:10,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:56:10,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:56:10,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:56:10,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:56:10,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:56:10,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:56:10,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:56:10,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:56:10,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:56:10,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:56:10,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:56:10,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:56:10,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:56:10,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:56:10,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:56:10,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:56:10,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:56:10,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:56:10,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:56:10,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:56:10,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:56:10,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:56:10,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:56:10,647 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:56:10,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:56:10,648 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:56:10,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:56:10,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:56:10,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:56:10,649 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:56:10,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:56:10,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:56:10,650 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:56:10,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:56:10,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:56:10,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:56:10,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:56:10,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:56:10,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:56:10,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:56:10,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:56:10,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:56:10,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:56:10,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:56:10,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:56:10,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:56:10,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:56:10,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:56:10,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:10,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:56:10,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:56:10,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:56:10,657 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:56:10,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:56:10,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:56:10,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:56:10,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:56:10,658 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_067d716d-de73-4294-ba06-e9f7dd6c4140/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69674fa9bac4462fab44fafedf177d67851aa51f3860d6fe181d82fe0b856912 [2021-11-12 22:56:11,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:56:11,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:56:11,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:56:11,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:56:11,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:56:11,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/xcsp/Haystacks-16.c [2021-11-12 22:56:11,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/data/5744c08cb/44fc4ac73aab43b2882dc448b3d04adf/FLAGfc743d525 [2021-11-12 22:56:12,128 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:56:12,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/sv-benchmarks/c/xcsp/Haystacks-16.c [2021-11-12 22:56:12,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/data/5744c08cb/44fc4ac73aab43b2882dc448b3d04adf/FLAGfc743d525 [2021-11-12 22:56:12,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/data/5744c08cb/44fc4ac73aab43b2882dc448b3d04adf [2021-11-12 22:56:12,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:56:12,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:56:12,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:12,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:56:12,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:56:12,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:12" (1/1) ... [2021-11-12 22:56:12,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798d6962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:12, skipping insertion in model container [2021-11-12 22:56:12,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:12" (1/1) ... [2021-11-12 22:56:12,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:56:12,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:56:13,601 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_067d716d-de73-4294-ba06-e9f7dd6c4140/sv-benchmarks/c/xcsp/Haystacks-16.c[105300,105313] [2021-11-12 22:56:13,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:13,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:56:13,988 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_067d716d-de73-4294-ba06-e9f7dd6c4140/sv-benchmarks/c/xcsp/Haystacks-16.c[105300,105313] [2021-11-12 22:56:13,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:14,017 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:56:14,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14 WrapperNode [2021-11-12 22:56:14,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:14,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:56:14,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:56:14,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:56:14,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:56:14,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:56:14,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:56:14,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:56:14,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:56:14,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:56:14,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:56:14,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:56:14,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (1/1) ... [2021-11-12 22:56:14,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:14,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:56:14,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:56:14,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:56:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:56:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:56:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:56:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2021-11-12 22:56:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2021-11-12 22:56:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:56:17,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:56:17,746 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:56:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:56:17 BoogieIcfgContainer [2021-11-12 22:56:17,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:56:17,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:56:17,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:56:17,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:56:17,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:56:12" (1/3) ... [2021-11-12 22:56:17,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4f6e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:56:17, skipping insertion in model container [2021-11-12 22:56:17,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:14" (2/3) ... [2021-11-12 22:56:17,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4f6e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:56:17, skipping insertion in model container [2021-11-12 22:56:17,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:56:17" (3/3) ... [2021-11-12 22:56:17,767 INFO L111 eAbstractionObserver]: Analyzing ICFG Haystacks-16.c [2021-11-12 22:56:17,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:56:17,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:56:17,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:56:17,884 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 [2021-11-12 22:56:17,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:56:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 2934 states, 259 states have (on average 1.0038610038610039) internal successors, (260), 260 states have internal predecessors, (260), 2672 states have call successors, (2672), 1 states have call predecessors, (2672), 1 states have return successors, (2672), 2672 states have call predecessors, (2672), 2672 states have call successors, (2672) [2021-11-12 22:56:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8275 [2021-11-12 22:56:18,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:18,784 INFO L514 BasicCegarLoop]: trace histogram [2672, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1] [2021-11-12 22:56:18,786 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:56:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1516631436, now seen corresponding path program 1 times [2021-11-12 22:56:18,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:18,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740483709] [2021-11-12 22:56:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:18,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:19,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:56:19,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413407120] [2021-11-12 22:56:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:19,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:56:19,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:56:19,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:56:19,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067d716d-de73-4294-ba06-e9f7dd6c4140/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process