./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu --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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:59:59,552 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:59:59,693 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:59:59,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:59:59,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:59:59,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:59:59,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:59:59,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:59:59,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:59:59,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:59:59,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:59:59,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:59:59,740 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:59:59,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:59:59,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:59:59,749 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:59:59,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:59:59,751 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:59:59,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:59:59,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:59:59,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:59:59,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:59:59,755 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:59:59,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:59:59,756 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:59:59,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:59:59,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:59:59,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:59:59,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:59:59,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:59:59,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:59:59,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:59:59,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:59:59,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:59:59,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:59:59,762 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:59:59,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:59:59,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:59:59,763 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:59:59,763 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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1
[2023-11-19 08:00:00,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 08:00:00,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 08:00:00,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 08:00:00,111 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 08:00:00,112 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 08:00:00,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/float-benchs/interpolation2.c
[2023-11-19 08:00:03,350 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 08:00:03,575 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 08:00:03,576 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/sv-benchmarks/c/float-benchs/interpolation2.c
[2023-11-19 08:00:03,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data/36ede8118/a4471690b8994c10b171cc540d7a9917/FLAGa5a1f51ce
[2023-11-19 08:00:03,609 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data/36ede8118/a4471690b8994c10b171cc540d7a9917
[2023-11-19 08:00:03,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 08:00:03,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 08:00:03,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:03,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 08:00:03,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 08:00:03,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a95109c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03, skipping insertion in model container
[2023-11-19 08:00:03,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,658 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 08:00:03,829 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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/sv-benchmarks/c/float-benchs/interpolation2.c[450,463]
[2023-11-19 08:00:03,856 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:03,866 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 08:00:03,878 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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/sv-benchmarks/c/float-benchs/interpolation2.c[450,463]
[2023-11-19 08:00:03,891 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:03,908 INFO L206 MainTranslator]: Completed translation
[2023-11-19 08:00:03,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03 WrapperNode
[2023-11-19 08:00:03,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:03,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:03,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 08:00:03,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 08:00:03,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,950 INFO L138 Inliner]: procedures = 18, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100
[2023-11-19 08:00:03,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:03,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 08:00:03,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 08:00:03,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 08:00:03,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 08:00:03,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 08:00:03,999 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 08:00:04,000 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 08:00:04,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:00:04,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:04,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:04,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 08:00:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 08:00:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 08:00:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 08:00:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2023-11-19 08:00:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 08:00:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 08:00:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2023-11-19 08:00:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 08:00:04,203 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 08:00:04,206 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 08:00:04,487 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 08:00:04,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 08:00:04,496 INFO L302 CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 08:00:04,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:04 BoogieIcfgContainer
[2023-11-19 08:00:04,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 08:00:04,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 08:00:04,504 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 08:00:04,509 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 08:00:04,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:03" (1/3) ...
[2023-11-19 08:00:04,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680083e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:04, skipping insertion in model container
[2023-11-19 08:00:04,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03" (2/3) ...
[2023-11-19 08:00:04,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680083e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:04, skipping insertion in model container
[2023-11-19 08:00:04,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:04" (3/3) ...
[2023-11-19 08:00:04,514 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2.c
[2023-11-19 08:00:04,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 08:00:04,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 08:00:04,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 08:00:04,623 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;@229fc154, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 08:00:04,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 08:00:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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)
[2023-11-19 08:00:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-19 08:00:04,639 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:04,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:04,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:04,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times
[2023-11-19 08:00:04,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703309774]
[2023-11-19 08:00:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:04,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703309774]
[2023-11-19 08:00:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703309774] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 08:00:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326131169]
[2023-11-19 08:00:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:04,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 08:00:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 08:00:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:00:05,011 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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)
[2023-11-19 08:00:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:05,026 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions.
[2023-11-19 08:00:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 08:00:05,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10
[2023-11-19 08:00:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:05,035 INFO L225 Difference]: With dead ends: 29
[2023-11-19 08:00:05,035 INFO L226 Difference]: Without dead ends: 13
[2023-11-19 08:00:05,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:00:05,042 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:05,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:00:05,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2023-11-19 08:00:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2023-11-19 08:00:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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)
[2023-11-19 08:00:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions.
[2023-11-19 08:00:05,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10
[2023-11-19 08:00:05,084 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:05,085 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions.
[2023-11-19 08:00:05,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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)
[2023-11-19 08:00:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions.
[2023-11-19 08:00:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-19 08:00:05,087 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:05,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 08:00:05,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:05,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times
[2023-11-19 08:00:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306320123]
[2023-11-19 08:00:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306320123]
[2023-11-19 08:00:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306320123] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:05,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 08:00:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561698696]
[2023-11-19 08:00:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:05,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 08:00:05,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:05,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 08:00:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:00:05,306 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2023-11-19 08:00:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:05,365 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions.
[2023-11-19 08:00:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 08:00:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10
[2023-11-19 08:00:05,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:05,370 INFO L225 Difference]: With dead ends: 24
[2023-11-19 08:00:05,370 INFO L226 Difference]: Without dead ends: 20
[2023-11-19 08:00:05,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:00:05,373 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:05,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:00:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2023-11-19 08:00:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14.
[2023-11-19 08:00:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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)
[2023-11-19 08:00:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2023-11-19 08:00:05,385 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10
[2023-11-19 08:00:05,385 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:05,386 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2023-11-19 08:00:05,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2023-11-19 08:00:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2023-11-19 08:00:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-19 08:00:05,387 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:05,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 08:00:05,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:05,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times
[2023-11-19 08:00:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877388140]
[2023-11-19 08:00:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 08:00:05,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 08:00:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 08:00:05,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 08:00:05,526 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 08:00:05,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-19 08:00:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 08:00:05,535 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-11-19 08:00:05,540 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 08:00:05,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated
[2023-11-19 08:00:05,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated
[2023-11-19 08:00:05,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated
[2023-11-19 08:00:05,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:00:05 BoogieIcfgContainer
[2023-11-19 08:00:05,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 08:00:05,578 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 08:00:05,578 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 08:00:05,579 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 08:00:05,579 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:04" (3/4) ...
[2023-11-19 08:00:05,581 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-11-19 08:00:05,582 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 08:00:05,583 INFO L158 Benchmark]: Toolchain (without parser) took 1961.49ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 119.7MB in the beginning and 154.7MB in the end (delta: -35.0MB). Peak memory consumption was 351.0kB. Max. memory is 16.1GB.
[2023-11-19 08:00:05,583 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 159.4MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 08:00:05,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.45ms. Allocated memory is still 159.4MB. Free memory was 119.3MB in the beginning and 108.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2023-11-19 08:00:05,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.29ms. Allocated memory is still 159.4MB. Free memory was 108.1MB in the beginning and 106.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 08:00:05,585 INFO L158 Benchmark]: Boogie Preprocessor took 46.56ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 08:00:05,586 INFO L158 Benchmark]: RCFGBuilder took 501.80ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 92.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2023-11-19 08:00:05,587 INFO L158 Benchmark]: TraceAbstraction took 1073.21ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 92.1MB in the beginning and 154.7MB in the end (delta: -62.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 08:00:05,587 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 192.9MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 08:00:05,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.34ms. Allocated memory is still 159.4MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 285.45ms. Allocated memory is still 159.4MB. Free memory was 119.3MB in the beginning and 108.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 41.29ms. Allocated memory is still 159.4MB. Free memory was 108.1MB in the beginning and 106.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 46.56ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 501.80ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 92.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 1073.21ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 92.1MB in the beginning and 154.7MB in the end (delta: -62.6MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 4.18ms. Allocated memory is still 192.9MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated
- GenericResult: Unfinished Backtranslation
Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated
- GenericResult: Unfinished Backtranslation
The program execution was not completely translated back.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 9]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 26.
Possible FailurePath:
[L13] int i;
[L14] float z, t;
[L15] float min[] = { 5, 10, 12, 30, 150 };
[L16] float max[] = { 10, 12, 30, 150, 300 };
[L17] float org[] = { 1, 5, -10, 30, 20 };
[L18] float slope[] = { 4, -15, 40, -10, 0 };
[L20] t = __VERIFIER_nondet_float()
[L21] EXPR min[0]
[L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]
[L21] EXPR max[sizeof(max) / sizeof(max[0]) - 1]
[L21] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]
VAL [max={7:0}, min={5:0}, org={4:0}, slope={6:0}]
[L21] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1])
[L7] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1]
[L21] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1])
[L23] i = 0
VAL [i=0, max={7:0}, min={5:0}, org={4:0}, slope={6:0}]
[L23] COND TRUE i < sizeof(min) / sizeof(min[0])
[L24] EXPR max[i]
VAL [i=0, max={7:0}, min={5:0}, org={4:0}, slope={6:0}]
[L24] COND TRUE t <= max[i]
[L26] EXPR org[i]
[L26] EXPR slope[i]
[L26] EXPR min[i]
[L26] EXPR max[i]
[L26] EXPR min[i]
[L26] z = org[i] + slope[i] * (t - min[i]) / (max[i] - min[i])
[L28] CALL __VERIFIER_assert(z >= -10.f && z <= 30.f)
[L9] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L9] reach_error()
VAL [\old(cond)=0, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-11-19 08:00:05,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu --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 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 08:00:08,392 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 08:00:08,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-11-19 08:00:08,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 08:00:08,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 08:00:08,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 08:00:08,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 08:00:08,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 08:00:08,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 08:00:08,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 08:00:08,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 08:00:08,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 08:00:08,585 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 08:00:08,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 08:00:08,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 08:00:08,588 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 08:00:08,588 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 08:00:08,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 08:00:08,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 08:00:08,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 08:00:08,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 08:00:08,591 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 08:00:08,592 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2023-11-19 08:00:08,592 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-19 08:00:08,593 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 08:00:08,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 08:00:08,593 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 08:00:08,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 08:00:08,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 08:00:08,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 08:00:08,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:00:08,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 08:00:08,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 08:00:08,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 08:00:08,598 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF
[2023-11-19 08:00:08,598 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-11-19 08:00:08,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 08:00:08,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 08:00:08,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 08:00:08,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 08:00:08,600 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
[2023-11-19 08:00:08,601 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 08:00:08,601 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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f3bcf3c30f63fe0ad0702712c01ba8d1145d6fb2558cd3e5ee3c870476dc3b1
[2023-11-19 08:00:09,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 08:00:09,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 08:00:09,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 08:00:09,051 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 08:00:09,052 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 08:00:09,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/float-benchs/interpolation2.c
[2023-11-19 08:00:12,159 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 08:00:12,399 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 08:00:12,401 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/sv-benchmarks/c/float-benchs/interpolation2.c
[2023-11-19 08:00:12,411 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data/9646be8b6/fdbd95b4199c429881b73a718fec754c/FLAGad42abbcf
[2023-11-19 08:00:12,426 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/data/9646be8b6/fdbd95b4199c429881b73a718fec754c
[2023-11-19 08:00:12,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 08:00:12,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 08:00:12,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:12,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 08:00:12,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 08:00:12,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f207f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12, skipping insertion in model container
[2023-11-19 08:00:12,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,466 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 08:00:12,651 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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/sv-benchmarks/c/float-benchs/interpolation2.c[450,463]
[2023-11-19 08:00:12,695 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:12,712 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 08:00:12,725 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_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/sv-benchmarks/c/float-benchs/interpolation2.c[450,463]
[2023-11-19 08:00:12,742 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:12,761 INFO L206 MainTranslator]: Completed translation
[2023-11-19 08:00:12,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12 WrapperNode
[2023-11-19 08:00:12,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:12,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:12,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 08:00:12,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 08:00:12,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,839 INFO L138 Inliner]: procedures = 19, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101
[2023-11-19 08:00:12,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:12,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 08:00:12,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 08:00:12,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 08:00:12,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 08:00:12,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 08:00:12,907 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 08:00:12,907 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 08:00:12,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (1/1) ...
[2023-11-19 08:00:12,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:00:12,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:12,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:12,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 08:00:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 08:00:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4
[2023-11-19 08:00:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-19 08:00:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 08:00:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4
[2023-11-19 08:00:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 08:00:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 08:00:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 08:00:13,072 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 08:00:13,074 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 08:00:15,518 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 08:00:15,525 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 08:00:15,525 INFO L302 CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 08:00:15,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:15 BoogieIcfgContainer
[2023-11-19 08:00:15,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 08:00:15,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 08:00:15,532 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 08:00:15,536 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 08:00:15,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:12" (1/3) ...
[2023-11-19 08:00:15,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b759d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:15, skipping insertion in model container
[2023-11-19 08:00:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:12" (2/3) ...
[2023-11-19 08:00:15,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b759d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:15, skipping insertion in model container
[2023-11-19 08:00:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:15" (3/3) ...
[2023-11-19 08:00:15,538 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2.c
[2023-11-19 08:00:15,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 08:00:15,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 08:00:15,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 08:00:15,638 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;@5d7d17ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 08:00:15,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 08:00:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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)
[2023-11-19 08:00:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-19 08:00:15,652 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:15,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:15,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:15,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times
[2023-11-19 08:00:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 08:00:15,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940938504]
[2023-11-19 08:00:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:15,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 08:00:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 08:00:15,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:15,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-19 08:00:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:16,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-19 08:00:16,231 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:16,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:00:16,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 08:00:16,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940938504]
[2023-11-19 08:00:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940938504] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:16,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:16,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 08:00:16,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721208916]
[2023-11-19 08:00:16,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:16,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 08:00:16,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 08:00:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 08:00:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:00:16,299 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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)
[2023-11-19 08:00:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:16,317 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions.
[2023-11-19 08:00:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 08:00:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10
[2023-11-19 08:00:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:16,328 INFO L225 Difference]: With dead ends: 29
[2023-11-19 08:00:16,328 INFO L226 Difference]: Without dead ends: 13
[2023-11-19 08:00:16,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 08:00:16,334 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:16,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 08:00:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2023-11-19 08:00:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2023-11-19 08:00:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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)
[2023-11-19 08:00:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions.
[2023-11-19 08:00:16,363 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10
[2023-11-19 08:00:16,364 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:16,364 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions.
[2023-11-19 08:00:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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)
[2023-11-19 08:00:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions.
[2023-11-19 08:00:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-19 08:00:16,365 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:16,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:16,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-11-19 08:00:16,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 08:00:16,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:16,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times
[2023-11-19 08:00:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 08:00:16,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331838503]
[2023-11-19 08:00:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:16,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 08:00:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 08:00:16,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:16,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-19 08:00:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:17,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-11-19 08:00:17,190 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:17,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 08:00:17,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 08:00:17,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331838503]
[2023-11-19 08:00:17,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331838503] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:17,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 08:00:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725193231]
[2023-11-19 08:00:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:17,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 08:00:17,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 08:00:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 08:00:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:00:17,256 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2023-11-19 08:00:19,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2023-11-19 08:00:21,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2023-11-19 08:00:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 08:00:21,662 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions.
[2023-11-19 08:00:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 08:00:21,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10
[2023-11-19 08:00:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 08:00:21,715 INFO L225 Difference]: With dead ends: 24
[2023-11-19 08:00:21,716 INFO L226 Difference]: Without dead ends: 20
[2023-11-19 08:00:21,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:00:21,718 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time
[2023-11-19 08:00:21,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time]
[2023-11-19 08:00:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2023-11-19 08:00:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14.
[2023-11-19 08:00:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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)
[2023-11-19 08:00:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2023-11-19 08:00:21,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10
[2023-11-19 08:00:21,724 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 08:00:21,724 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2023-11-19 08:00:21,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2023-11-19 08:00:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2023-11-19 08:00:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-19 08:00:21,726 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 08:00:21,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:21,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-11-19 08:00:21,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 08:00:21,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 08:00:21,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times
[2023-11-19 08:00:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 08:00:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410566590]
[2023-11-19 08:00:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:21,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 08:00:21,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 08:00:21,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:21,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b27cfc5-7405-489c-9f7e-cd0e12e32feb/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-11-19 08:00:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:22,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 30 conjunts are in the unsatisfiable core
[2023-11-19 08:00:22,770 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:30,893 INFO L349 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size
[2023-11-19 08:00:30,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 612 treesize of output 312