./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i --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_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2e7bb75a4a041a1b509d755288a88858836cab5db2230ae4fd0db7ec04fe254
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-12-02 13:51:16,583 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-02 13:51:16,649 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2023-12-02 13:51:16,653 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-02 13:51:16,653 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-02 13:51:16,675 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-02 13:51:16,675 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-02 13:51:16,676 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-02 13:51:16,676 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-02 13:51:16,677 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-02 13:51:16,678 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-12-02 13:51:16,678 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-12-02 13:51:16,679 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-12-02 13:51:16,679 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-12-02 13:51:16,680 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-12-02 13:51:16,680 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-12-02 13:51:16,681 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-12-02 13:51:16,681 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-12-02 13:51:16,682 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-12-02 13:51:16,683 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-12-02 13:51:16,683 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-12-02 13:51:16,684 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-12-02 13:51:16,685 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-02 13:51:16,685 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-02 13:51:16,686 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-02 13:51:16,686 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-02 13:51:16,686 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-02 13:51:16,687 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-02 13:51:16,687 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-02 13:51:16,688 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-02 13:51:16,688 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-02 13:51:16,688 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-02 13:51:16,689 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-02 13:51:16,689 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-02 13:51:16,689 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-02 13:51:16,689 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-02 13:51:16,690 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-02 13:51:16,690 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:51:16,690 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-02 13:51:16,690 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-02 13:51:16,691 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-02 13:51:16,691 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-12-02 13:51:16,691 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-02 13:51:16,691 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-02 13:51:16,692 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-02 13:51:16,692 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-12-02 13:51:16,692 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-02 13:51:16,692 INFO  L153        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_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/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_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh
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 -> 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 -> e2e7bb75a4a041a1b509d755288a88858836cab5db2230ae4fd0db7ec04fe254
[2023-12-02 13:51:16,906 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-02 13:51:16,927 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-02 13:51:16,930 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-02 13:51:16,932 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-02 13:51:16,932 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-02 13:51:16,933 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i
[2023-12-02 13:51:19,659 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-02 13:51:20,110 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-02 13:51:20,110 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i
[2023-12-02 13:51:20,149 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/data/d3008c20a/541b6eedcf684927b083bca2c8d691cf/FLAGcbd1bf29d
[2023-12-02 13:51:20,164 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/data/d3008c20a/541b6eedcf684927b083bca2c8d691cf
[2023-12-02 13:51:20,167 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-02 13:51:20,168 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-12-02 13:51:20,169 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-02 13:51:20,170 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-02 13:51:20,174 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-02 13:51:20,175 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:51:20" (1/1) ...
[2023-12-02 13:51:20,176 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a21935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:20, skipping insertion in model container
[2023-12-02 13:51:20,176 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:51:20" (1/1) ...
[2023-12-02 13:51:20,317 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-02 13:51:20,679 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_6db238a6-1e01-4224-bb68-a865bb9798e4/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482]
[2023-12-02 13:51:24,653 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:51:24,669 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-02 13:51:24,685 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_6db238a6-1e01-4224-bb68-a865bb9798e4/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482]
[2023-12-02 13:51:24,776 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227]
[2023-12-02 13:51:24,778 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227]
[2023-12-02 13:51:24,778 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227]
[2023-12-02 13:51:24,779 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227]
[2023-12-02 13:51:24,866 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5814]
[2023-12-02 13:51:24,910 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-02 13:51:25,385 WARN  L675               CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 13:51:25,385 WARN  L675               CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 13:51:25,385 WARN  L675               CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 13:51:25,386 WARN  L675               CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 13:51:25,386 WARN  L675               CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 13:51:25,386 WARN  L675               CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler.
[2023-12-02 13:51:25,392 INFO  L206         MainTranslator]: Completed translation
[2023-12-02 13:51:25,392 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25 WrapperNode
[2023-12-02 13:51:25,392 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-02 13:51:25,393 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-02 13:51:25,393 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-02 13:51:25,393 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-02 13:51:25,398 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,480 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,536 INFO  L138                Inliner]: procedures = 1353, calls = 1466, calls flagged for inlining = 347, calls inlined = 18, statements flattened = 379
[2023-12-02 13:51:25,537 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-02 13:51:25,537 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-02 13:51:25,538 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-02 13:51:25,538 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-02 13:51:25,548 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,548 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,553 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,554 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,572 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,576 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,583 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,587 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,596 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-02 13:51:25,597 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-02 13:51:25,598 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-02 13:51:25,598 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-02 13:51:25,598 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (1/1) ...
[2023-12-02 13:51:25,604 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-12-02 13:51:25,614 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:51:25,626 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-12-02 13:51:25,637 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-12-02 13:51:25,663 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-12-02 13:51:25,663 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-12-02 13:51:25,663 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-02 13:51:25,663 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-02 13:51:25,663 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-02 13:51:25,663 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2023-12-02 13:51:25,664 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-12-02 13:51:25,664 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-12-02 13:51:25,664 INFO  L130     BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram
[2023-12-02 13:51:25,664 INFO  L138     BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram
[2023-12-02 13:51:25,664 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-12-02 13:51:25,665 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-12-02 13:51:25,665 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-12-02 13:51:25,665 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-12-02 13:51:25,665 INFO  L130     BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram
[2023-12-02 13:51:25,665 INFO  L138     BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram
[2023-12-02 13:51:25,666 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-12-02 13:51:25,667 WARN  L213             CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-12-02 13:51:26,039 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-02 13:51:26,041 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-02 13:51:26,493 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-02 13:51:26,955 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-02 13:51:26,955 INFO  L309             CfgBuilder]: Removed 2 assume(true) statements.
[2023-12-02 13:51:26,956 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:51:26 BoogieIcfgContainer
[2023-12-02 13:51:26,956 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-02 13:51:26,958 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-02 13:51:26,958 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-02 13:51:26,961 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-02 13:51:26,961 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:51:20" (1/3) ...
[2023-12-02 13:51:26,961 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc98cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:51:26, skipping insertion in model container
[2023-12-02 13:51:26,961 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:25" (2/3) ...
[2023-12-02 13:51:26,962 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc98cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:51:26, skipping insertion in model container
[2023-12-02 13:51:26,962 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:51:26" (3/3) ...
[2023-12-02 13:51:26,963 INFO  L112   eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i
[2023-12-02 13:51:26,973 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-12-02 13:51:26,984 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-02 13:51:26,984 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-12-02 13:51:26,984 INFO  L514   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-12-02 13:51:27,090 INFO  L144    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-12-02 13:51:27,113 INFO  L113   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 53 transitions, 120 flow
[2023-12-02 13:51:27,173 INFO  L135   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 624 states, 621 states have (on average 2.8309178743961354) internal successors, (1758), 623 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:27,189 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-02 13:51:27,195 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=FINITE_AUTOMATA, 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;@3c1f284d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-02 13:51:27,195 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2023-12-02 13:51:27,198 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 624 states, 621 states have (on average 2.8309178743961354) internal successors, (1758), 623 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:27,210 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2023-12-02 13:51:27,210 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:51:27,211 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:51:27,211 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-12-02 13:51:27,216 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:51:27,216 INFO  L85        PathProgramCache]: Analyzing trace with hash -608021087, now seen corresponding path program 1 times
[2023-12-02 13:51:27,223 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:51:27,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877255815]
[2023-12-02 13:51:27,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:27,224 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:51:27,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:29,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:51:29,041 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:51:29,041 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877255815]
[2023-12-02 13:51:29,042 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877255815] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:51:29,042 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:51:29,042 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-02 13:51:29,043 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633097503]
[2023-12-02 13:51:29,044 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:51:29,047 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-02 13:51:29,047 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:51:29,071 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-02 13:51:29,072 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-12-02 13:51:29,075 INFO  L87              Difference]: Start difference. First operand  has 624 states, 621 states have (on average 2.8309178743961354) internal successors, (1758), 623 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:30,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:51:30,905 INFO  L93              Difference]: Finished difference Result 1607 states and 4475 transitions.
[2023-12-02 13:51:30,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-02 13:51:30,907 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2023-12-02 13:51:30,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:51:30,936 INFO  L225             Difference]: With dead ends: 1607
[2023-12-02 13:51:30,936 INFO  L226             Difference]: Without dead ends: 1571
[2023-12-02 13:51:30,937 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2023-12-02 13:51:30,941 INFO  L413           NwaCegarLoop]: 33 mSDtfsCounter, 215 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-12-02 13:51:30,942 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 148 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-12-02 13:51:30,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1571 states.
[2023-12-02 13:51:31,040 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 815.
[2023-12-02 13:51:31,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 815 states, 812 states have (on average 2.726600985221675) internal successors, (2214), 814 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:31,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 2214 transitions.
[2023-12-02 13:51:31,048 INFO  L78                 Accepts]: Start accepts. Automaton has 815 states and 2214 transitions. Word has length 14
[2023-12-02 13:51:31,049 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:51:31,049 INFO  L495      AbstractCegarLoop]: Abstraction has 815 states and 2214 transitions.
[2023-12-02 13:51:31,049 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:31,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 815 states and 2214 transitions.
[2023-12-02 13:51:31,053 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2023-12-02 13:51:31,053 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:51:31,054 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:51:31,054 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-02 13:51:31,054 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-12-02 13:51:31,055 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:51:31,055 INFO  L85        PathProgramCache]: Analyzing trace with hash -1738078429, now seen corresponding path program 1 times
[2023-12-02 13:51:31,055 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:51:31,056 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809032913]
[2023-12-02 13:51:31,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:31,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:51:31,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:32,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:51:32,420 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:51:32,421 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809032913]
[2023-12-02 13:51:32,421 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809032913] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:51:32,421 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:51:32,421 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-02 13:51:32,421 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125931752]
[2023-12-02 13:51:32,422 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:51:32,423 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-12-02 13:51:32,423 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:51:32,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-12-02 13:51:32,424 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2023-12-02 13:51:32,424 INFO  L87              Difference]: Start difference. First operand 815 states and 2214 transitions. Second operand  has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:34,830 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:51:34,831 INFO  L93              Difference]: Finished difference Result 1380 states and 3712 transitions.
[2023-12-02 13:51:34,831 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-12-02 13:51:34,831 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2023-12-02 13:51:34,832 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:51:34,844 INFO  L225             Difference]: With dead ends: 1380
[2023-12-02 13:51:34,844 INFO  L226             Difference]: Without dead ends: 1352
[2023-12-02 13:51:34,845 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342
[2023-12-02 13:51:34,846 INFO  L413           NwaCegarLoop]: 36 mSDtfsCounter, 307 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2023-12-02 13:51:34,847 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 198 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2023-12-02 13:51:34,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1352 states.
[2023-12-02 13:51:34,880 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 796.
[2023-12-02 13:51:34,883 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 796 states, 793 states have (on average 2.7225725094577555) internal successors, (2159), 795 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:34,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2159 transitions.
[2023-12-02 13:51:34,889 INFO  L78                 Accepts]: Start accepts. Automaton has 796 states and 2159 transitions. Word has length 15
[2023-12-02 13:51:34,889 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:51:34,889 INFO  L495      AbstractCegarLoop]: Abstraction has 796 states and 2159 transitions.
[2023-12-02 13:51:34,890 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:34,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 796 states and 2159 transitions.
[2023-12-02 13:51:34,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-12-02 13:51:34,892 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:51:34,892 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:51:34,892 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-02 13:51:34,893 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-12-02 13:51:34,893 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:51:34,893 INFO  L85        PathProgramCache]: Analyzing trace with hash 1355545892, now seen corresponding path program 1 times
[2023-12-02 13:51:34,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:51:34,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888997754]
[2023-12-02 13:51:34,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:34,894 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:51:35,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:36,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:51:36,561 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:51:36,561 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888997754]
[2023-12-02 13:51:36,561 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888997754] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:51:36,562 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735611024]
[2023-12-02 13:51:36,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:36,562 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:51:36,562 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:51:36,563 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:51:36,567 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-02 13:51:37,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:37,799 INFO  L262         TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-02 13:51:37,805 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-02 13:51:37,848 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2023-12-02 13:51:37,878 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35
[2023-12-02 13:51:37,956 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-02 13:51:37,957 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-02 13:51:37,957 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735611024] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:51:37,957 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-02 13:51:37,957 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-02 13:51:37,957 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458466826]
[2023-12-02 13:51:37,958 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:51:37,958 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:51:37,958 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:51:37,959 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:51:37,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2023-12-02 13:51:37,959 INFO  L87              Difference]: Start difference. First operand 796 states and 2159 transitions. Second operand  has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:39,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:51:39,006 INFO  L93              Difference]: Finished difference Result 1221 states and 3235 transitions.
[2023-12-02 13:51:39,006 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-02 13:51:39,006 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2023-12-02 13:51:39,007 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:51:39,017 INFO  L225             Difference]: With dead ends: 1221
[2023-12-02 13:51:39,017 INFO  L226             Difference]: Without dead ends: 1125
[2023-12-02 13:51:39,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182
[2023-12-02 13:51:39,019 INFO  L413           NwaCegarLoop]: 28 mSDtfsCounter, 115 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-12-02 13:51:39,019 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 79 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-12-02 13:51:39,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1125 states.
[2023-12-02 13:51:39,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 658.
[2023-12-02 13:51:39,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 658 states, 655 states have (on average 2.6320610687022903) internal successors, (1724), 657 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:39,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1724 transitions.
[2023-12-02 13:51:39,053 INFO  L78                 Accepts]: Start accepts. Automaton has 658 states and 1724 transitions. Word has length 16
[2023-12-02 13:51:39,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:51:39,053 INFO  L495      AbstractCegarLoop]: Abstraction has 658 states and 1724 transitions.
[2023-12-02 13:51:39,053 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:39,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 658 states and 1724 transitions.
[2023-12-02 13:51:39,055 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-12-02 13:51:39,055 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:51:39,055 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:51:39,067 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-02 13:51:39,264 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:51:39,264 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-12-02 13:51:39,265 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:51:39,265 INFO  L85        PathProgramCache]: Analyzing trace with hash 1130806454, now seen corresponding path program 1 times
[2023-12-02 13:51:39,265 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:51:39,265 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672289388]
[2023-12-02 13:51:39,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:39,265 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:51:39,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:39,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:51:39,783 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:51:39,784 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672289388]
[2023-12-02 13:51:39,784 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672289388] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-02 13:51:39,784 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-02 13:51:39,784 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-02 13:51:39,784 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535455157]
[2023-12-02 13:51:39,785 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-02 13:51:39,785 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-02 13:51:39,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-12-02 13:51:39,785 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-02 13:51:39,786 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-02 13:51:39,786 INFO  L87              Difference]: Start difference. First operand 658 states and 1724 transitions. Second operand  has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:40,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-02 13:51:40,492 INFO  L93              Difference]: Finished difference Result 866 states and 2252 transitions.
[2023-12-02 13:51:40,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-02 13:51:40,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2023-12-02 13:51:40,493 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-02 13:51:40,498 INFO  L225             Difference]: With dead ends: 866
[2023-12-02 13:51:40,498 INFO  L226             Difference]: Without dead ends: 600
[2023-12-02 13:51:40,498 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-02 13:51:40,499 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 114 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-02 13:51:40,500 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 64 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-02 13:51:40,502 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 600 states.
[2023-12-02 13:51:40,513 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 448.
[2023-12-02 13:51:40,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 448 states, 446 states have (on average 2.414798206278027) internal successors, (1077), 447 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:40,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1077 transitions.
[2023-12-02 13:51:40,517 INFO  L78                 Accepts]: Start accepts. Automaton has 448 states and 1077 transitions. Word has length 16
[2023-12-02 13:51:40,518 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-02 13:51:40,518 INFO  L495      AbstractCegarLoop]: Abstraction has 448 states and 1077 transitions.
[2023-12-02 13:51:40,518 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-02 13:51:40,519 INFO  L276                IsEmpty]: Start isEmpty. Operand 448 states and 1077 transitions.
[2023-12-02 13:51:40,519 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-12-02 13:51:40,520 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-02 13:51:40,520 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-02 13:51:40,520 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-02 13:51:40,520 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-12-02 13:51:40,520 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-02 13:51:40,521 INFO  L85        PathProgramCache]: Analyzing trace with hash -997044224, now seen corresponding path program 1 times
[2023-12-02 13:51:40,521 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-12-02 13:51:40,521 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594737997]
[2023-12-02 13:51:40,521 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:40,521 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-02 13:51:40,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:41,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-02 13:51:41,949 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-12-02 13:51:41,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594737997]
[2023-12-02 13:51:41,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594737997] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-02 13:51:41,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402529095]
[2023-12-02 13:51:41,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-02 13:51:41,949 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-02 13:51:41,950 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3
[2023-12-02 13:51:41,951 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-02 13:51:41,953 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db238a6-1e01-4224-bb68-a865bb9798e4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-02 13:51:42,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-02 13:51:42,578 INFO  L262         TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-02 13:51:42,581 INFO  L285         TraceCheckSpWp]: Computing forward predicates...