./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69674fa9bac4462fab44fafedf177d67851aa51f3860d6fe181d82fe0b856912 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:33:17,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:33:17,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:33:17,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:33:17,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:33:17,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:33:17,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:33:17,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:33:17,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:33:17,995 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:33:17,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:33:17,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:33:17,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:33:17,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:33:17,998 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:33:17,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:33:17,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:33:17,999 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:33:18,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:33:18,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:33:18,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:33:18,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:33:18,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:33:18,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:33:18,005 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:33:18,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:33:18,005 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:33:18,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:33:18,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:33:18,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:33:18,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:33:18,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:33:18,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:33:18,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:33:18,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:33:18,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:33:18,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:33:18,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:33:18,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:33:18,009 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:33:18,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:33:18,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:33:18,010 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69674fa9bac4462fab44fafedf177d67851aa51f3860d6fe181d82fe0b856912 [2023-11-28 20:33:18,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:33:18,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:33:18,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:33:18,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:33:18,250 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:33:18,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/xcsp/Haystacks-16.c [2023-11-28 20:33:20,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:33:21,327 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:33:21,327 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/sv-benchmarks/c/xcsp/Haystacks-16.c [2023-11-28 20:33:21,347 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/data/935bdeb80/cabcac1b90f54604a66eaad23802bcca/FLAGc4a1cceb2 [2023-11-28 20:33:21,361 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/data/935bdeb80/cabcac1b90f54604a66eaad23802bcca [2023-11-28 20:33:21,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:33:21,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:33:21,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:33:21,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:33:21,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:33:21,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:33:21" (1/1) ... [2023-11-28 20:33:21,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbbdea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:21, skipping insertion in model container [2023-11-28 20:33:21,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:33:21" (1/1) ... [2023-11-28 20:33:21,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:33:21,949 WARN L240 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_9f547e42-d122-4a8d-9a8e-6449fa7276c0/sv-benchmarks/c/xcsp/Haystacks-16.c[105300,105313] [2023-11-28 20:33:21,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:33:21,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:33:22,139 WARN L240 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_9f547e42-d122-4a8d-9a8e-6449fa7276c0/sv-benchmarks/c/xcsp/Haystacks-16.c[105300,105313] [2023-11-28 20:33:22,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:33:22,160 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:33:22,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22 WrapperNode [2023-11-28 20:33:22,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:33:22,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:33:22,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:33:22,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:33:22,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,386 INFO L138 Inliner]: procedures = 13, calls = 2679, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3968 [2023-11-28 20:33:22,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:33:22,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:33:22,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:33:22,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:33:22,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,447 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 20:33:22,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:33:22,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:33:22,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:33:22,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:33:22,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (1/1) ... [2023-11-28 20:33:22,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:33:22,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:33:22,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:33:22,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:33:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:33:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:33:22,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:33:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:33:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2023-11-28 20:33:22,591 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2023-11-28 20:33:22,758 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:33:22,759 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:33:24,912 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:33:25,019 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:33:25,019 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 20:33:25,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:33:25 BoogieIcfgContainer [2023-11-28 20:33:25,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:33:25,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:33:25,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:33:25,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:33:25,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:33:21" (1/3) ... [2023-11-28 20:33:25,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8943a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:33:25, skipping insertion in model container [2023-11-28 20:33:25,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:33:22" (2/3) ... [2023-11-28 20:33:25,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8943a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:33:25, skipping insertion in model container [2023-11-28 20:33:25,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:33:25" (3/3) ... [2023-11-28 20:33:25,031 INFO L112 eAbstractionObserver]: Analyzing ICFG Haystacks-16.c [2023-11-28 20:33:25,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:33:25,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 20:33:25,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:33:25,188 INFO L357 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4137793f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:33:25,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 20:33:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 2936 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 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) [2023-11-28 20:33:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13619 [2023-11-28 20:33:26,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:33:26,660 INFO L195 NwaCegarLoop]: trace histogram [2672, 2672, 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, 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1, 1, 1, 1] [2023-11-28 20:33:26,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:33:26,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:33:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2035503725, now seen corresponding path program 1 times [2023-11-28 20:33:26,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:33:26,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025484044] [2023-11-28 20:33:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:26,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:33:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:33:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:33:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025484044] [2023-11-28 20:33:28,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 20:33:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193821175] [2023-11-28 20:33:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:28,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:33:28,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:33:28,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:33:28,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:33:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:33:32,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 24586 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 20:33:32,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:33:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14273824 backedges. 5342 proven. 0 refuted. 0 times theorem prover too weak. 14268482 trivial. 0 not checked. [2023-11-28 20:33:33,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:33:33,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193821175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:33:33,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:33:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:33:33,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699831318] [2023-11-28 20:33:33,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:33:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 20:33:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:33:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 20:33:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:33:33,638 INFO L87 Difference]: Start difference. First operand has 2936 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 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) Second operand has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 2 states have call successors, (2672), 2 states have call predecessors, (2672), 1 states have return successors, (2672), 1 states have call predecessors, (2672), 2 states have call successors, (2672) [2023-11-28 20:33:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:33:33,916 INFO L93 Difference]: Finished difference Result 5869 states and 13883 transitions. [2023-11-28 20:33:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 20:33:33,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 2 states have call successors, (2672), 2 states have call predecessors, (2672), 1 states have return successors, (2672), 1 states have call predecessors, (2672), 2 states have call successors, (2672) Word has length 13618 [2023-11-28 20:33:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:33:33,967 INFO L225 Difference]: With dead ends: 5869 [2023-11-28 20:33:33,967 INFO L226 Difference]: Without dead ends: 2935 [2023-11-28 20:33:33,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13617 GetRequests, 13617 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:33:34,000 INFO L413 NwaCegarLoop]: 5604 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5604 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:33:34,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5604 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:33:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2023-11-28 20:33:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2935. [2023-11-28 20:33:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 261 states have (on average 1.0) internal successors, (261), 261 states have internal predecessors, (261), 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) [2023-11-28 20:33:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 5605 transitions. [2023-11-28 20:33:38,472 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 5605 transitions. Word has length 13618 [2023-11-28 20:33:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:33:38,476 INFO L495 AbstractCegarLoop]: Abstraction has 2935 states and 5605 transitions. [2023-11-28 20:33:38,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 2 states have call successors, (2672), 2 states have call predecessors, (2672), 1 states have return successors, (2672), 1 states have call predecessors, (2672), 2 states have call successors, (2672) [2023-11-28 20:33:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 5605 transitions. [2023-11-28 20:33:40,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13619 [2023-11-28 20:33:40,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:33:40,006 INFO L195 NwaCegarLoop]: trace histogram [2672, 2672, 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, 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1, 1, 1, 1] [2023-11-28 20:33:40,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:33:40,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 20:33:40,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:33:40,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:33:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1417766803, now seen corresponding path program 1 times [2023-11-28 20:33:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:33:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875272846] [2023-11-28 20:33:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:33:40,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:33:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484146161] [2023-11-28 20:33:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:40,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:33:40,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:33:40,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:33:40,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f547e42-d122-4a8d-9a8e-6449fa7276c0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process