./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_5.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX --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 95850d9ace07be9fad13430ca25ab838987eafca40e87b378615766ec56483f7
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:36:03,097 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:36:03,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 16:36:03,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:36:03,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:36:03,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:36:03,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:36:03,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:36:03,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:36:03,220 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:36:03,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:36:03,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:36:03,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:36:03,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:36:03,223 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:36:03,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:36:03,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 16:36:03,224 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:36:03,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 16:36:03,225 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:36:03,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:36:03,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 16:36:03,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:36:03,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 16:36:03,231 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:36:03,231 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:36:03,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 16:36:03,232 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:36:03,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:36:03,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:36:03,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:36:03,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:36:03,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:36:03,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:36:03,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:36:03,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 16:36:03,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 16:36:03,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 16:36:03,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:36:03,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:36:03,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:36:03,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:36:03,240 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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95850d9ace07be9fad13430ca25ab838987eafca40e87b378615766ec56483f7
[2024-11-08 16:36:03,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:36:03,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:36:03,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:36:03,560 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:36:03,561 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:36:03,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/floats-cdfpl/square_5.i
Unable to find full path for "g++"
[2024-11-08 16:36:05,733 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:36:06,035 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:36:06,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/sv-benchmarks/c/floats-cdfpl/square_5.i
[2024-11-08 16:36:06,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data/bce0711de/b52aaf3d3b954336a1d266d6b5f629ff/FLAG1344d08da
[2024-11-08 16:36:06,073 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data/bce0711de/b52aaf3d3b954336a1d266d6b5f629ff
[2024-11-08 16:36:06,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:36:06,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:36:06,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:36:06,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:36:06,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:36:06,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af3f88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06, skipping insertion in model container
[2024-11-08 16:36:06,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,125 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:36:06,397 WARN L250 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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/sv-benchmarks/c/floats-cdfpl/square_5.i[1628,1641]
[2024-11-08 16:36:06,405 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:36:06,421 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:36:06,445 WARN L250 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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/sv-benchmarks/c/floats-cdfpl/square_5.i[1628,1641]
[2024-11-08 16:36:06,446 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:36:06,471 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:36:06,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06 WrapperNode
[2024-11-08 16:36:06,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:36:06,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:36:06,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:36:06,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:36:06,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,518 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21
[2024-11-08 16:36:06,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:36:06,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:36:06,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:36:06,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:36:06,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,561 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 16:36:06,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,565 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:36:06,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:36:06,574 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:36:06,574 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:36:06,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (1/1) ...
[2024-11-08 16:36:06,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:36:06,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:36:06,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:36:06,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:36:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:36:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 16:36:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:36:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:36:06,734 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:36:06,736 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:36:06,869 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live.
[2024-11-08 16:36:06,869 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:36:06,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:36:06,880 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 16:36:06,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:06 BoogieIcfgContainer
[2024-11-08 16:36:06,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:36:06,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:36:06,885 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:36:06,889 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:36:06,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:36:06" (1/3) ...
[2024-11-08 16:36:06,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d734852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:06, skipping insertion in model container
[2024-11-08 16:36:06,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:06" (2/3) ...
[2024-11-08 16:36:06,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d734852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:06, skipping insertion in model container
[2024-11-08 16:36:06,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:06" (3/3) ...
[2024-11-08 16:36:06,893 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5.i
[2024-11-08 16:36:06,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:36:06,917 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 16:36:06,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:36:07,000 INFO L333 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, 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;@1f27fdd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:36:07,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 16:36:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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)
[2024-11-08 16:36:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:36:07,010 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:36:07,011 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:07,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:36:07,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times
[2024-11-08 16:36:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:07,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976631463]
[2024-11-08 16:36:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:07,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:07,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976631463]
[2024-11-08 16:36:07,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976631463] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:07,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:36:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051382623]
[2024-11-08 16:36:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:07,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 16:36:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 16:36:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 16:36:07,295 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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)
[2024-11-08 16:36:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:36:07,324 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions.
[2024-11-08 16:36:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-08 16:36:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2024-11-08 16:36:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:36:07,343 INFO L225 Difference]: With dead ends: 19
[2024-11-08 16:36:07,343 INFO L226 Difference]: Without dead ends: 7
[2024-11-08 16:36:07,347 INFO L431 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
[2024-11-08 16:36:07,351 INFO L432 NwaCegarLoop]: 10 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, 10 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
[2024-11-08 16:36:07,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:36:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2024-11-08 16:36:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7.
[2024-11-08 16:36:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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)
[2024-11-08 16:36:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions.
[2024-11-08 16:36:07,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6
[2024-11-08 16:36:07,388 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:36:07,388 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions.
[2024-11-08 16:36:07,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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)
[2024-11-08 16:36:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions.
[2024-11-08 16:36:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:36:07,389 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:36:07,389 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:07,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 16:36:07,391 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:36:07,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times
[2024-11-08 16:36:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366251821]
[2024-11-08 16:36:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 16:36:07,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-08 16:36:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-08 16:36:07,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-08 16:36:07,481 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-08 16:36:07,484 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-08 16:36:07,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 16:36:07,493 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1]
[2024-11-08 16:36:07,511 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-08 16:36:07,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:36:07 BoogieIcfgContainer
[2024-11-08 16:36:07,519 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-08 16:36:07,521 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-08 16:36:07,522 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-08 16:36:07,522 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-08 16:36:07,523 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:06" (3/4) ...
[2024-11-08 16:36:07,526 INFO L145 WitnessPrinter]: No result that supports witness generation found
[2024-11-08 16:36:07,528 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-08 16:36:07,529 INFO L158 Benchmark]: Toolchain (without parser) took 1449.43ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 96.5MB in the beginning and 116.8MB in the end (delta: -20.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB.
[2024-11-08 16:36:07,530 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 16:36:07,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.28ms. Allocated memory is still 125.8MB. Free memory was 96.2MB in the beginning and 83.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 16:36:07,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.47ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 82.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:36:07,531 INFO L158 Benchmark]: Boogie Preprocessor took 51.80ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 81.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 16:36:07,532 INFO L158 Benchmark]: RCFGBuilder took 307.19ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 72.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-08 16:36:07,535 INFO L158 Benchmark]: TraceAbstraction took 634.51ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 71.3MB in the beginning and 116.8MB in the end (delta: -45.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 16:36:07,536 INFO L158 Benchmark]: Witness Printer took 7.18ms. Allocated memory is still 151.0MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 16:36:07,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 390.28ms. Allocated memory is still 125.8MB. Free memory was 96.2MB in the beginning and 83.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 46.47ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 82.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 51.80ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 81.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 307.19ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 72.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 634.51ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 71.3MB in the beginning and 116.8MB in the end (delta: -45.5MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 7.18ms. Allocated memory is still 151.0MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB.
* 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: 38]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35.
Possible FailurePath:
[L29] float IN = __VERIFIER_nondet_float();
[L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L24] COND FALSE !(!cond)
[L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f)
[L32] float x = IN;
[L34-L35] float result =
1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x;
[L37] COND TRUE !(result >= 0.0f && result < 1.3985f)
[L38] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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
[2024-11-08 16:36:07,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX --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 95850d9ace07be9fad13430ca25ab838987eafca40e87b378615766ec56483f7
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:36:10,272 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:36:10,393 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 16:36:10,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:36:10,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:36:10,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:36:10,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:36:10,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:36:10,453 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:36:10,453 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:36:10,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:36:10,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:36:10,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:36:10,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:36:10,459 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:36:10,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:36:10,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 16:36:10,460 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:36:10,460 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:36:10,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:36:10,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 16:36:10,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:36:10,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 16:36:10,466 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 16:36:10,467 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 16:36:10,467 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:36:10,467 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 16:36:10,468 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:36:10,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 16:36:10,468 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:36:10,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:36:10,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:36:10,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:36:10,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:36:10,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:36:10,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:36:10,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:36:10,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 16:36:10,474 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 16:36:10,474 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 16:36:10,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:36:10,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:36:10,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:36:10,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:36:10,488 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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95850d9ace07be9fad13430ca25ab838987eafca40e87b378615766ec56483f7
[2024-11-08 16:36:10,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:36:10,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:36:10,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:36:10,941 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:36:10,942 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:36:10,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/floats-cdfpl/square_5.i
Unable to find full path for "g++"
[2024-11-08 16:36:13,355 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:36:13,630 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:36:13,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/sv-benchmarks/c/floats-cdfpl/square_5.i
[2024-11-08 16:36:13,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data/c46900896/70c7489d1bd9456ea96904e6801c8a91/FLAGf63131dd9
[2024-11-08 16:36:13,941 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/data/c46900896/70c7489d1bd9456ea96904e6801c8a91
[2024-11-08 16:36:13,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:36:13,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:36:13,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:36:13,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:36:13,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:36:13,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:13" (1/1) ...
[2024-11-08 16:36:13,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d000e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:13, skipping insertion in model container
[2024-11-08 16:36:13,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:13" (1/1) ...
[2024-11-08 16:36:13,979 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:36:14,218 WARN L250 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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/sv-benchmarks/c/floats-cdfpl/square_5.i[1628,1641]
[2024-11-08 16:36:14,224 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:36:14,244 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:36:14,265 WARN L250 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_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/sv-benchmarks/c/floats-cdfpl/square_5.i[1628,1641]
[2024-11-08 16:36:14,265 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:36:14,290 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:36:14,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14 WrapperNode
[2024-11-08 16:36:14,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:36:14,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:36:14,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:36:14,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:36:14,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,342 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22
[2024-11-08 16:36:14,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:36:14,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:36:14,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:36:14,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:36:14,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,378 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 16:36:14,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:36:14,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:36:14,415 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:36:14,416 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:36:14,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (1/1) ...
[2024-11-08 16:36:14,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:36:14,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:36:14,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:36:14,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:36:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:36:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 16:36:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:36:14,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:36:14,626 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:36:14,631 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:36:18,990 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live.
[2024-11-08 16:36:18,990 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:36:19,003 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:36:19,003 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 16:36:19,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:19 BoogieIcfgContainer
[2024-11-08 16:36:19,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:36:19,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:36:19,007 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:36:19,011 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:36:19,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:36:13" (1/3) ...
[2024-11-08 16:36:19,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc2c7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:19, skipping insertion in model container
[2024-11-08 16:36:19,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:14" (2/3) ...
[2024-11-08 16:36:19,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc2c7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:19, skipping insertion in model container
[2024-11-08 16:36:19,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:19" (3/3) ...
[2024-11-08 16:36:19,015 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5.i
[2024-11-08 16:36:19,037 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:36:19,038 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 16:36:19,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:36:19,120 INFO L333 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, 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;@72588684, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:36:19,120 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 16:36:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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)
[2024-11-08 16:36:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:36:19,132 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:36:19,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:19,133 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:36:19,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times
[2024-11-08 16:36:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:36:19,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109125892]
[2024-11-08 16:36:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:19,161 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
[2024-11-08 16:36:19,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/mathsat
[2024-11-08 16:36:19,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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)
[2024-11-08 16:36:19,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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
[2024-11-08 16:36:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:19,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-08 16:36:19,999 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:36:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:20,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:36:20,026 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 16:36:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109125892]
[2024-11-08 16:36:20,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109125892] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:20,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:20,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:36:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656784620]
[2024-11-08 16:36:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:20,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 16:36:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 16:36:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 16:36:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 16:36:20,070 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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)
[2024-11-08 16:36:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 16:36:20,086 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions.
[2024-11-08 16:36:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-11-08 16:36:20,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2024-11-08 16:36:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 16:36:20,097 INFO L225 Difference]: With dead ends: 19
[2024-11-08 16:36:20,097 INFO L226 Difference]: Without dead ends: 7
[2024-11-08 16:36:20,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 16:36:20,106 INFO L432 NwaCegarLoop]: 10 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, 10 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
[2024-11-08 16:36:20,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 16:36:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2024-11-08 16:36:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7.
[2024-11-08 16:36:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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)
[2024-11-08 16:36:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions.
[2024-11-08 16:36:20,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6
[2024-11-08 16:36:20,139 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 16:36:20,139 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions.
[2024-11-08 16:36:20,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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)
[2024-11-08 16:36:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions.
[2024-11-08 16:36:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2024-11-08 16:36:20,140 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 16:36:20,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:20,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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)] Ended with exit code 0
[2024-11-08 16:36:20,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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
[2024-11-08 16:36:20,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 16:36:20,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times
[2024-11-08 16:36:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 16:36:20,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088558038]
[2024-11-08 16:36:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:20,344 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
[2024-11-08 16:36:20,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/mathsat
[2024-11-08 16:36:20,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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)
[2024-11-08 16:36:20,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08cfcefe-9596-4a50-aaa6-32f46d6bdcc3/bin/uautomizer-verify-jihMAELWvX/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