./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-19.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme --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 1853276af926d58c6b3ed0ec4b2f9e2337c8b095afaf2fd2143288796902cc0f
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-26 12:06:08,602 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-26 12:06:08,741 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-26 12:06:08,758 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-26 12:06:08,759 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-26 12:06:08,793 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-26 12:06:08,794 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-26 12:06:08,795 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-26 12:06:08,796 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-26 12:06:08,797 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-26 12:06:08,798 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-26 12:06:08,799 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-26 12:06:08,800 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-26 12:06:08,801 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-26 12:06:08,802 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-26 12:06:08,803 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-26 12:06:08,803 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-26 12:06:08,804 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-26 12:06:08,805 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-26 12:06:08,805 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-26 12:06:08,806 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-26 12:06:08,807 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-26 12:06:08,808 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-26 12:06:08,808 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-26 12:06:08,809 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-26 12:06:08,809 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-26 12:06:08,810 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-26 12:06:08,811 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-26 12:06:08,811 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-26 12:06:08,812 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-26 12:06:08,812 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-26 12:06:08,813 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 12:06:08,813 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-26 12:06:08,814 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-26 12:06:08,815 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-26 12:06:08,815 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-26 12:06:08,816 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-26 12:06:08,816 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-26 12:06:08,817 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-26 12:06:08,818 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-26 12:06:08,818 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-26 12:06:08,819 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-26 12:06:08,820 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_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/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_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme
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 -> 1853276af926d58c6b3ed0ec4b2f9e2337c8b095afaf2fd2143288796902cc0f
[2023-11-26 12:06:09,148 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-26 12:06:09,177 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-26 12:06:09,181 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-26 12:06:09,182 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-26 12:06:09,183 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-26 12:06:09,185 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/xcsp/Haystacks-19.c
[2023-11-26 12:06:12,540 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-26 12:06:13,116 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-26 12:06:13,117 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/sv-benchmarks/c/xcsp/Haystacks-19.c
[2023-11-26 12:06:13,154 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/data/ae5dd4f1b/80d3c20320bd411bac6735ecd8a20cf7/FLAG7c268d3bb
[2023-11-26 12:06:13,178 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/data/ae5dd4f1b/80d3c20320bd411bac6735ecd8a20cf7
[2023-11-26 12:06:13,188 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-26 12:06:13,193 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-26 12:06:13,198 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-26 12:06:13,198 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-26 12:06:13,205 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-26 12:06:13,205 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:13" (1/1) ...
[2023-11-26 12:06:13,207 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c0ff18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:13, skipping insertion in model container
[2023-11-26 12:06:13,207 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:13" (1/1) ...
[2023-11-26 12:06:13,403 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-26 12:06:14,413 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_7dce85aa-96bb-465e-9ca7-83ee8dab4622/sv-benchmarks/c/xcsp/Haystacks-19.c[171554,171567]
[2023-11-26 12:06:14,454 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 12:06:14,468 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-26 12:06:14,846 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_7dce85aa-96bb-465e-9ca7-83ee8dab4622/sv-benchmarks/c/xcsp/Haystacks-19.c[171554,171567]
[2023-11-26 12:06:14,855 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-26 12:06:14,873 INFO  L206         MainTranslator]: Completed translation
[2023-11-26 12:06:14,874 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14 WrapperNode
[2023-11-26 12:06:14,874 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-26 12:06:14,876 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-26 12:06:14,876 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-26 12:06:14,876 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-26 12:06:14,885 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:14,971 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,230 INFO  L138                Inliner]: procedures = 13, calls = 4320, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6134
[2023-11-26 12:06:15,231 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-26 12:06:15,232 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-26 12:06:15,232 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-26 12:06:15,233 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-26 12:06:15,246 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,246 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,278 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,344 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].
[2023-11-26 12:06:15,345 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,345 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,419 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,430 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,450 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,473 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,514 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-26 12:06:15,515 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-26 12:06:15,516 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-26 12:06:15,516 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-26 12:06:15,518 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ...
[2023-11-26 12:06:15,524 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-26 12:06:15,613 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 12:06:15,626 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-26 12:06:15,659 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-26 12:06:15,673 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-26 12:06:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-26 12:06:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-26 12:06:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-26 12:06:15,679 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2023-11-26 12:06:15,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2023-11-26 12:06:15,986 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-26 12:06:15,989 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-26 12:06:20,286 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-26 12:06:20,399 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-26 12:06:20,399 INFO  L309             CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-26 12:06:20,402 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:20 BoogieIcfgContainer
[2023-11-26 12:06:20,402 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-26 12:06:20,405 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-26 12:06:20,405 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-26 12:06:20,409 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-26 12:06:20,409 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:13" (1/3) ...
[2023-11-26 12:06:20,410 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e78e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:20, skipping insertion in model container
[2023-11-26 12:06:20,411 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (2/3) ...
[2023-11-26 12:06:20,411 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e78e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:20, skipping insertion in model container
[2023-11-26 12:06:20,411 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:20" (3/3) ...
[2023-11-26 12:06:20,413 INFO  L112   eAbstractionObserver]: Analyzing ICFG Haystacks-19.c
[2023-11-26 12:06:20,434 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-26 12:06:20,435 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-26 12:06:20,658 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-26 12:06:20,670 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;@77677fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-26 12:06:20,671 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-26 12:06:20,701 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4682 states, 366 states have (on average 1.005464480874317) internal successors, (368), 367 states have internal predecessors, (368), 4313 states have call successors, (4313), 1 states have call predecessors, (4313), 1 states have return successors, (4313), 4313 states have call predecessors, (4313), 4313 states have call successors, (4313)
[2023-11-26 12:06:23,667 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21929
[2023-11-26 12:06:23,667 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 12:06:23,683 INFO  L195           NwaCegarLoop]: trace histogram [4313, 4313, 4313, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-26 12:06:23,686 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 12:06:23,692 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 12:06:23,703 INFO  L85        PathProgramCache]: Analyzing trace with hash -79341293, now seen corresponding path program 1 times
[2023-11-26 12:06:23,715 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 12:06:23,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029601141]
[2023-11-26 12:06:23,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 12:06:23,722 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 12:06:25,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 12:06:28,016 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-26 12:06:28,016 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029601141]
[2023-11-26 12:06:28,017 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2023-11-26 12:06:28,017 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109207913]
[2023-11-26 12:06:28,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 12:06:28,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 12:06:28,022 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 12:06:28,029 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 12:06:28,049 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-26 12:06:35,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-26 12:06:35,985 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39565 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-26 12:06:36,640 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-26 12:06:38,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 37195312 backedges. 8624 proven. 0 refuted. 0 times theorem prover too weak. 37186688 trivial. 0 not checked.
[2023-11-26 12:06:38,971 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-26 12:06:38,972 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [109207913] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-26 12:06:38,972 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-26 12:06:38,978 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-26 12:06:38,980 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115032115]
[2023-11-26 12:06:38,981 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-26 12:06:39,010 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-26 12:06:39,011 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-26 12:06:39,077 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-26 12:06:39,078 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-26 12:06:39,105 INFO  L87              Difference]: Start difference. First operand  has 4682 states, 366 states have (on average 1.005464480874317) internal successors, (368), 367 states have internal predecessors, (368), 4313 states have call successors, (4313), 1 states have call predecessors, (4313), 1 states have return successors, (4313), 4313 states have call predecessors, (4313), 4313 states have call successors, (4313) Second operand  has 2 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 2 states have call successors, (4313), 2 states have call predecessors, (4313), 1 states have return successors, (4313), 1 states have call predecessors, (4313), 2 states have call successors, (4313)
[2023-11-26 12:06:39,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-26 12:06:39,664 INFO  L93              Difference]: Finished difference Result 9361 states and 22298 transitions.
[2023-11-26 12:06:39,666 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-26 12:06:39,682 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 2 states have call successors, (4313), 2 states have call predecessors, (4313), 1 states have return successors, (4313), 1 states have call predecessors, (4313), 2 states have call successors, (4313) Word has length 21928
[2023-11-26 12:06:39,691 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-26 12:06:39,798 INFO  L225             Difference]: With dead ends: 9361
[2023-11-26 12:06:39,798 INFO  L226             Difference]: Without dead ends: 4681
[2023-11-26 12:06:39,871 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 21927 GetRequests, 21927 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-26 12:06:39,875 INFO  L413           NwaCegarLoop]: 8991 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, 8991 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
[2023-11-26 12:06:39,876 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8991 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-26 12:06:39,923 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4681 states.
[2023-11-26 12:06:50,636 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4681.
[2023-11-26 12:06:50,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4681 states, 366 states have (on average 1.0) internal successors, (366), 366 states have internal predecessors, (366), 4313 states have call successors, (4313), 1 states have call predecessors, (4313), 1 states have return successors, (4313), 4313 states have call predecessors, (4313), 4313 states have call successors, (4313)
[2023-11-26 12:06:50,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 8992 transitions.
[2023-11-26 12:06:50,724 INFO  L78                 Accepts]: Start accepts. Automaton has 4681 states and 8992 transitions. Word has length 21928
[2023-11-26 12:06:50,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-26 12:06:50,730 INFO  L495      AbstractCegarLoop]: Abstraction has 4681 states and 8992 transitions.
[2023-11-26 12:06:50,735 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 2 states have call successors, (4313), 2 states have call predecessors, (4313), 1 states have return successors, (4313), 1 states have call predecessors, (4313), 2 states have call successors, (4313)
[2023-11-26 12:06:50,736 INFO  L276                IsEmpty]: Start isEmpty. Operand 4681 states and 8992 transitions.
[2023-11-26 12:06:54,051 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21929
[2023-11-26 12:06:54,052 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-26 12:06:54,063 INFO  L195           NwaCegarLoop]: trace histogram [4313, 4313, 4313, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-26 12:06:54,136 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-11-26 12:06:54,263 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 12:06:54,264 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-26 12:06:54,264 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-26 12:06:54,271 INFO  L85        PathProgramCache]: Analyzing trace with hash 1152216145, now seen corresponding path program 1 times
[2023-11-26 12:06:54,271 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-26 12:06:54,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776738323]
[2023-11-26 12:06:54,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 12:06:54,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-26 12:06:55,382 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-26 12:06:55,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726521082]
[2023-11-26 12:06:55,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-26 12:06:55,388 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-26 12:06:55,388 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3
[2023-11-26 12:06:55,389 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-26 12:06:55,441 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dce85aa-96bb-465e-9ca7-83ee8dab4622/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process