./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max10-1.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/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_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/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_58ff608b-c163-4460-87c5-a64fadb74dd1/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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 17:37:41,043 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 17:37:41,149 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 17:37:41,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 17:37:41,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 17:37:41,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 17:37:41,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 17:37:41,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 17:37:41,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 17:37:41,208 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 17:37:41,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 17:37:41,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 17:37:41,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 17:37:41,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 17:37:41,213 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 17:37:41,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 17:37:41,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 17:37:41,214 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 17:37:41,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 17:37:41,215 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 17:37:41,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 17:37:41,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 17:37:41,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 17:37:41,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 17:37:41,221 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 17:37:41,221 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 17:37:41,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 17:37:41,222 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 17:37:41,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 17:37:41,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 17:37:41,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 17:37:41,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 17:37:41,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:37:41,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 17:37:41,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 17:37:41,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 17:37:41,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 17:37:41,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 17:37:41,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 17:37:41,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 17:37:41,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 17:37:41,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 17:37:41,229 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_58ff608b-c163-4460-87c5-a64fadb74dd1/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e
[2024-11-08 17:37:41,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 17:37:41,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 17:37:41,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 17:37:41,586 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 17:37:41,586 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 17:37:41,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/reducercommutativity/max10-1.i
Unable to find full path for "g++"
[2024-11-08 17:37:43,715 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 17:37:43,905 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 17:37:43,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/sv-benchmarks/c/reducercommutativity/max10-1.i
[2024-11-08 17:37:43,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data/8772a8fbf/839205647ec84d02a6f3a4d00e19a80a/FLAG26af8dad0
[2024-11-08 17:37:44,297 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data/8772a8fbf/839205647ec84d02a6f3a4d00e19a80a
[2024-11-08 17:37:44,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 17:37:44,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 17:37:44,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 17:37:44,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 17:37:44,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 17:37:44,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69aa3f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44, skipping insertion in model container
[2024-11-08 17:37:44,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,335 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 17:37:44,530 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_58ff608b-c163-4460-87c5-a64fadb74dd1/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303]
[2024-11-08 17:37:44,534 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:37:44,543 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 17:37:44,564 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_58ff608b-c163-4460-87c5-a64fadb74dd1/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303]
[2024-11-08 17:37:44,565 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:37:44,582 INFO L204 MainTranslator]: Completed translation
[2024-11-08 17:37:44,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44 WrapperNode
[2024-11-08 17:37:44,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 17:37:44,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 17:37:44,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 17:37:44,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 17:37:44,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,615 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67
[2024-11-08 17:37:44,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 17:37:44,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 17:37:44,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 17:37:44,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 17:37:44,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,644 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5].
[2024-11-08 17:37:44,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,650 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 17:37:44,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 17:37:44,661 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 17:37:44,661 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 17:37:44,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (1/1) ...
[2024-11-08 17:37:44,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:37:44,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:44,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 17:37:44,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 17:37:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 17:37:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure max
[2024-11-08 17:37:44,725 INFO L138 BoogieDeclarations]: Found implementation of procedure max
[2024-11-08 17:37:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 17:37:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 17:37:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 17:37:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 17:37:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 17:37:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 17:37:44,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 17:37:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-08 17:37:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-08 17:37:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 17:37:44,807 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 17:37:44,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 17:37:44,988 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-08 17:37:44,989 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 17:37:45,002 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 17:37:45,002 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 17:37:45,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:37:45 BoogieIcfgContainer
[2024-11-08 17:37:45,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 17:37:45,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 17:37:45,008 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 17:37:45,011 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 17:37:45,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:37:44" (1/3) ...
[2024-11-08 17:37:45,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d79e0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:37:45, skipping insertion in model container
[2024-11-08 17:37:45,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:44" (2/3) ...
[2024-11-08 17:37:45,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d79e0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:37:45, skipping insertion in model container
[2024-11-08 17:37:45,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:37:45" (3/3) ...
[2024-11-08 17:37:45,019 INFO L112 eAbstractionObserver]: Analyzing ICFG max10-1.i
[2024-11-08 17:37:45,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 17:37:45,038 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 17:37:45,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 17:37:45,121 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;@4871b6d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 17:37:45,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 17:37:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 17:37:45,135 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:45,136 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:45,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:45,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1891818562, now seen corresponding path program 1 times
[2024-11-08 17:37:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916638446]
[2024-11-08 17:37:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:45,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2024-11-08 17:37:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:45,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2024-11-08 17:37:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:45,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2024-11-08 17:37:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-11-08 17:37:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916638446]
[2024-11-08 17:37:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916638446] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56772608]
[2024-11-08 17:37:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:45,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:45,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:45,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:45,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 17:37:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:45,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:45,756 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:37:45,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:37:45,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56772608] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:37:45,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:37:45,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2024-11-08 17:37:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074871268]
[2024-11-08 17:37:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:37:45,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:37:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:37:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:37:45,835 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:37:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:45,890 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions.
[2024-11-08 17:37:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:37:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29
[2024-11-08 17:37:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:45,902 INFO L225 Difference]: With dead ends: 56
[2024-11-08 17:37:45,902 INFO L226 Difference]: Without dead ends: 27
[2024-11-08 17:37:45,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:37:45,912 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:45,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:37:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2024-11-08 17:37:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2024-11-08 17:37:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions.
[2024-11-08 17:37:45,961 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 29
[2024-11-08 17:37:45,962 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:45,962 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions.
[2024-11-08 17:37:45,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:37:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions.
[2024-11-08 17:37:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 17:37:45,968 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:45,968 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:45,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 17:37:46,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:46,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:46,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1135630941, now seen corresponding path program 1 times
[2024-11-08 17:37:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990288261]
[2024-11-08 17:37:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2024-11-08 17:37:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2024-11-08 17:37:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2024-11-08 17:37:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:37:46,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:46,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990288261]
[2024-11-08 17:37:46,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990288261] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:46,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183351724]
[2024-11-08 17:37:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:46,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:46,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 17:37:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:46,533 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:37:46,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:37:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183351724] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:37:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:37:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2024-11-08 17:37:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639130605]
[2024-11-08 17:37:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:37:46,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:37:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:37:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:37:46,560 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:37:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:46,593 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions.
[2024-11-08 17:37:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:37:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31
[2024-11-08 17:37:46,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:46,596 INFO L225 Difference]: With dead ends: 50
[2024-11-08 17:37:46,597 INFO L226 Difference]: Without dead ends: 31
[2024-11-08 17:37:46,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 17:37:46,600 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:46,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:37:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-08 17:37:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29.
[2024-11-08 17:37:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions.
[2024-11-08 17:37:46,612 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 31
[2024-11-08 17:37:46,613 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:46,613 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions.
[2024-11-08 17:37:46,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:37:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions.
[2024-11-08 17:37:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-11-08 17:37:46,616 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:46,617 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:46,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 17:37:46,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:46,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:46,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -693052716, now seen corresponding path program 1 times
[2024-11-08 17:37:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220270036]
[2024-11-08 17:37:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2024-11-08 17:37:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2024-11-08 17:37:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2024-11-08 17:37:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:37:46,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:46,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220270036]
[2024-11-08 17:37:46,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220270036] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441995813]
[2024-11-08 17:37:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:46,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:46,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:46,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:46,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 17:37:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:47,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:47,071 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:37:47,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:37:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441995813] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:37:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 17:37:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-08 17:37:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939930631]
[2024-11-08 17:37:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:37:47,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:37:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:37:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:37:47,092 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:37:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:47,118 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions.
[2024-11-08 17:37:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:37:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43
[2024-11-08 17:37:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:47,121 INFO L225 Difference]: With dead ends: 47
[2024-11-08 17:37:47,121 INFO L226 Difference]: Without dead ends: 31
[2024-11-08 17:37:47,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:37:47,125 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:47,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:37:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-08 17:37:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2024-11-08 17:37:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions.
[2024-11-08 17:37:47,133 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 43
[2024-11-08 17:37:47,135 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:47,135 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions.
[2024-11-08 17:37:47,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:37:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions.
[2024-11-08 17:37:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:37:47,137 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:47,137 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:47,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-08 17:37:47,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:47,342 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:47,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash 298705295, now seen corresponding path program 1 times
[2024-11-08 17:37:47,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:47,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860295426]
[2024-11-08 17:37:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:47,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2024-11-08 17:37:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:47,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2024-11-08 17:37:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:47,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2024-11-08 17:37:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-08 17:37:47,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860295426]
[2024-11-08 17:37:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860295426] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915852407]
[2024-11-08 17:37:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:47,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:47,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:47,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:47,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 17:37:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:47,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:47,626 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 17:37:47,670 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:37:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 17:37:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915852407] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:37:47,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:37:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9
[2024-11-08 17:37:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555215146]
[2024-11-08 17:37:47,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:37:47,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 17:37:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 17:37:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:37:47,747 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-08 17:37:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:47,833 INFO L93 Difference]: Finished difference Result 67 states and 93 transitions.
[2024-11-08 17:37:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:37:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45
[2024-11-08 17:37:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:47,834 INFO L225 Difference]: With dead ends: 67
[2024-11-08 17:37:47,835 INFO L226 Difference]: Without dead ends: 42
[2024-11-08 17:37:47,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:37:47,836 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:47,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 95 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:37:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2024-11-08 17:37:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40.
[2024-11-08 17:37:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions.
[2024-11-08 17:37:47,851 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 45
[2024-11-08 17:37:47,851 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:47,852 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions.
[2024-11-08 17:37:47,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-08 17:37:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions.
[2024-11-08 17:37:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2024-11-08 17:37:47,856 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:47,856 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:47,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-08 17:37:48,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:48,057 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:48,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1155211415, now seen corresponding path program 2 times
[2024-11-08 17:37:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:48,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869397446]
[2024-11-08 17:37:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:48,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2024-11-08 17:37:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:48,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2024-11-08 17:37:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:48,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2024-11-08 17:37:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked.
[2024-11-08 17:37:48,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:48,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869397446]
[2024-11-08 17:37:48,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869397446] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:48,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848163574]
[2024-11-08 17:37:48,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 17:37:48,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:48,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:48,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:48,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 17:37:48,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 17:37:48,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:37:48,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:48,336 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2024-11-08 17:37:48,407 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:37:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2024-11-08 17:37:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848163574] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:37:48,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:37:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14
[2024-11-08 17:37:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495459799]
[2024-11-08 17:37:48,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:37:48,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 17:37:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 17:37:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:37:48,539 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2024-11-08 17:37:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:48,657 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions.
[2024-11-08 17:37:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 17:37:48,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63
[2024-11-08 17:37:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:48,659 INFO L225 Difference]: With dead ends: 83
[2024-11-08 17:37:48,659 INFO L226 Difference]: Without dead ends: 54
[2024-11-08 17:37:48,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2024-11-08 17:37:48,660 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:48,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:37:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-11-08 17:37:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2024-11-08 17:37:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions.
[2024-11-08 17:37:48,676 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 63
[2024-11-08 17:37:48,676 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:48,676 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions.
[2024-11-08 17:37:48,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)
[2024-11-08 17:37:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions.
[2024-11-08 17:37:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-08 17:37:48,679 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:48,681 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:48,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 17:37:48,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:48,882 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:48,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2073735476, now seen corresponding path program 3 times
[2024-11-08 17:37:48,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:48,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464083472]
[2024-11-08 17:37:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:48,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:49,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2024-11-08 17:37:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:49,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2024-11-08 17:37:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:49,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2024-11-08 17:37:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked.
[2024-11-08 17:37:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464083472]
[2024-11-08 17:37:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464083472] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543462893]
[2024-11-08 17:37:49,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 17:37:49,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:49,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:49,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 17:37:49,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-08 17:37:49,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:37:49,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:49,249 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked.
[2024-11-08 17:37:49,280 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:37:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked.
[2024-11-08 17:37:49,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543462893] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:37:49,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:37:49,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8
[2024-11-08 17:37:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663629561]
[2024-11-08 17:37:49,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:37:49,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 17:37:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 17:37:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:37:49,362 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2024-11-08 17:37:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:49,432 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions.
[2024-11-08 17:37:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:37:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77
[2024-11-08 17:37:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:49,434 INFO L225 Difference]: With dead ends: 98
[2024-11-08 17:37:49,434 INFO L226 Difference]: Without dead ends: 69
[2024-11-08 17:37:49,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2024-11-08 17:37:49,436 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:49,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 104 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:37:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2024-11-08 17:37:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2024-11-08 17:37:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions.
[2024-11-08 17:37:49,445 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 77
[2024-11-08 17:37:49,445 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:49,445 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions.
[2024-11-08 17:37:49,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2024-11-08 17:37:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions.
[2024-11-08 17:37:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2024-11-08 17:37:49,447 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:49,447 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:49,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-08 17:37:49,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:49,648 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:49,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -160579056, now seen corresponding path program 4 times
[2024-11-08 17:37:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:49,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073181617]
[2024-11-08 17:37:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:49,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2024-11-08 17:37:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:50,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2024-11-08 17:37:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:50,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2024-11-08 17:37:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked.
[2024-11-08 17:37:50,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073181617]
[2024-11-08 17:37:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073181617] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37189950]
[2024-11-08 17:37:50,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 17:37:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:50,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:50,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 17:37:50,304 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 17:37:50,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:37:50,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:50,309 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked.
[2024-11-08 17:37:50,373 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:37:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked.
[2024-11-08 17:37:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37189950] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:37:50,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:37:50,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12
[2024-11-08 17:37:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963196212]
[2024-11-08 17:37:50,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:37:50,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 17:37:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:50,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 17:37:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:37:50,511 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2024-11-08 17:37:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:50,581 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions.
[2024-11-08 17:37:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:37:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 125
[2024-11-08 17:37:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:50,583 INFO L225 Difference]: With dead ends: 129
[2024-11-08 17:37:50,583 INFO L226 Difference]: Without dead ends: 85
[2024-11-08 17:37:50,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 249 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:37:50,585 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:50,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 84 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:37:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2024-11-08 17:37:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2024-11-08 17:37:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions.
[2024-11-08 17:37:50,600 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 125
[2024-11-08 17:37:50,600 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:50,600 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions.
[2024-11-08 17:37:50,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2024-11-08 17:37:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions.
[2024-11-08 17:37:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174
[2024-11-08 17:37:50,604 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:50,604 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:50,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-08 17:37:50,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:50,805 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:50,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash -173462804, now seen corresponding path program 5 times
[2024-11-08 17:37:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492102909]
[2024-11-08 17:37:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:51,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2024-11-08 17:37:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:51,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2024-11-08 17:37:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:51,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124
[2024-11-08 17:37:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked.
[2024-11-08 17:37:51,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:51,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492102909]
[2024-11-08 17:37:51,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492102909] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:51,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382957532]
[2024-11-08 17:37:51,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 17:37:51,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:51,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:51,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:51,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 17:37:51,565 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s)
[2024-11-08 17:37:51,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:37:51,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:51,573 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked.
[2024-11-08 17:37:51,645 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:37:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked.
[2024-11-08 17:37:51,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382957532] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:37:51,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:37:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9
[2024-11-08 17:37:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305758723]
[2024-11-08 17:37:51,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:37:51,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 17:37:51,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 17:37:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:37:51,729 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:37:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:51,776 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions.
[2024-11-08 17:37:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 17:37:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 173
[2024-11-08 17:37:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:51,782 INFO L225 Difference]: With dead ends: 143
[2024-11-08 17:37:51,782 INFO L226 Difference]: Without dead ends: 92
[2024-11-08 17:37:51,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2024-11-08 17:37:51,787 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:51,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:37:51,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-08 17:37:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2024-11-08 17:37:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 87 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions.
[2024-11-08 17:37:51,799 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 173
[2024-11-08 17:37:51,799 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:51,799 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions.
[2024-11-08 17:37:51,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:37:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions.
[2024-11-08 17:37:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2024-11-08 17:37:51,802 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:51,802 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:51,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-08 17:37:52,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:52,008 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:52,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash -89893288, now seen corresponding path program 6 times
[2024-11-08 17:37:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:52,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816007599]
[2024-11-08 17:37:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:52,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2024-11-08 17:37:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:52,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2024-11-08 17:37:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:52,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132
[2024-11-08 17:37:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked.
[2024-11-08 17:37:52,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816007599]
[2024-11-08 17:37:52,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816007599] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902103600]
[2024-11-08 17:37:52,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-08 17:37:52,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:52,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:52,481 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:52,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 17:37:52,946 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s)
[2024-11-08 17:37:52,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:37:52,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:52,953 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked.
[2024-11-08 17:37:52,993 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:37:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked.
[2024-11-08 17:37:53,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902103600] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:37:53,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 17:37:53,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12
[2024-11-08 17:37:53,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497663999]
[2024-11-08 17:37:53,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:37:53,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 17:37:53,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 17:37:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 17:37:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:37:53,100 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:37:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:37:53,144 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions.
[2024-11-08 17:37:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-08 17:37:53,145 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181
[2024-11-08 17:37:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:37:53,147 INFO L225 Difference]: With dead ends: 149
[2024-11-08 17:37:53,147 INFO L226 Difference]: Without dead ends: 98
[2024-11-08 17:37:53,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 360 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:37:53,148 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:37:53,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:37:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2024-11-08 17:37:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98.
[2024-11-08 17:37:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:37:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions.
[2024-11-08 17:37:53,158 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 181
[2024-11-08 17:37:53,158 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:37:53,159 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions.
[2024-11-08 17:37:53,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:37:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions.
[2024-11-08 17:37:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2024-11-08 17:37:53,162 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:37:53,162 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:37:53,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-08 17:37:53,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:53,363 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:37:53,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:37:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 422171145, now seen corresponding path program 7 times
[2024-11-08 17:37:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 17:37:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677594274]
[2024-11-08 17:37:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:37:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 17:37:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:56,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2024-11-08 17:37:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:56,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2024-11-08 17:37:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:57,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2024-11-08 17:37:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 272 proven. 1201 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked.
[2024-11-08 17:37:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 17:37:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677594274]
[2024-11-08 17:37:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677594274] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 17:37:57,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277245094]
[2024-11-08 17:37:57,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-08 17:37:57,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:37:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:37:57,780 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:37:57,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 17:37:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:37:58,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 149 conjuncts are in the unsatisfiable core
[2024-11-08 17:37:58,077 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:37:59,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:37:59,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 44
[2024-11-08 17:38:00,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:38:00,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 54
[2024-11-08 17:38:00,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:38:00,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 54
[2024-11-08 17:38:00,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:38:00,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 47
[2024-11-08 17:38:01,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:38:01,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 47
[2024-11-08 17:38:01,151 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,154 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,156 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,157 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,161 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,162 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 17:38:01,177 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size
[2024-11-08 17:38:01,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 68 treesize of output 71
[2024-11-08 17:38:01,680 INFO L349 Elim1Store]: treesize reduction 230, result has 27.2 percent of original size
[2024-11-08 17:38:01,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 110 treesize of output 144
[2024-11-08 17:38:03,122 INFO L349 Elim1Store]: treesize reduction 400, result has 30.4 percent of original size
[2024-11-08 17:38:03,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 16 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 147 treesize of output 248
[2024-11-08 17:42:48,654 WARN L286 SmtUtils]: Spent 4.59m on a formula simplification. DAG size of input: 4153 DAG size of output: 3138 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1)
[2024-11-08 17:42:48,657 INFO L349 Elim1Store]: treesize reduction 3084, result has 71.7 percent of original size
[2024-11-08 17:42:48,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 48 select indices, 48 select index equivalence classes, 22 disjoint index pairs (out of 1128 index pairs), introduced 48 new quantified variables, introduced 1175 case distinctions, treesize of input 880 treesize of output 8160
[2024-11-08 17:51:19,986 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory")
[2024-11-08 17:51:19,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101
[2024-11-08 17:51:19,989 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception
[2024-11-08 17:51:20,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-08 17:51:20,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-08 17:51:20,190 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90)
at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107)
at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283)
at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180)
at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.<init>(TraceCheckSpWp.java:159)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137)
at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:82)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:143)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701)
at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383)
at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258)
... 68 more
[2024-11-08 17:51:20,194 INFO L158 Benchmark]: Toolchain (without parser) took 815892.98ms. Allocated memory was 178.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 136.6MB in the beginning and 1.0GB in the end (delta: -886.1MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB.
[2024-11-08 17:51:20,194 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 17:51:20,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.14ms. Allocated memory is still 178.3MB. Free memory was 136.6MB in the beginning and 123.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 17:51:20,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.72ms. Allocated memory is still 178.3MB. Free memory was 123.5MB in the beginning and 121.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-08 17:51:20,195 INFO L158 Benchmark]: Boogie Preprocessor took 43.39ms. Allocated memory is still 178.3MB. Free memory was 121.9MB in the beginning and 120.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-08 17:51:20,195 INFO L158 Benchmark]: RCFGBuilder took 342.62ms. Allocated memory is still 178.3MB. Free memory was 119.8MB in the beginning and 107.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-08 17:51:20,197 INFO L158 Benchmark]: TraceAbstraction took 815186.19ms. Allocated memory was 178.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 106.4MB in the beginning and 1.0GB in the end (delta: -916.3MB). Peak memory consumption was 974.8MB. Max. memory is 16.1GB.
[2024-11-08 17:51:20,199 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 280.14ms. Allocated memory is still 178.3MB. Free memory was 136.6MB in the beginning and 123.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.72ms. Allocated memory is still 178.3MB. Free memory was 123.5MB in the beginning and 121.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 43.39ms. Allocated memory is still 178.3MB. Free memory was 121.9MB in the beginning and 120.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 342.62ms. Allocated memory is still 178.3MB. Free memory was 119.8MB in the beginning and 107.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 815186.19ms. Allocated memory was 178.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 106.4MB in the beginning and 1.0GB in the end (delta: -916.3MB). Peak memory consumption was 974.8MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")
: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/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_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/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_58ff608b-c163-4460-87c5-a64fadb74dd1/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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 17:51:22,468 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 17:51:22,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-08 17:51:22,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 17:51:22,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 17:51:22,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 17:51:22,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 17:51:22,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 17:51:22,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 17:51:22,608 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 17:51:22,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 17:51:22,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 17:51:22,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 17:51:22,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 17:51:22,610 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 17:51:22,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 17:51:22,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 17:51:22,611 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 17:51:22,611 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 17:51:22,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 17:51:22,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 17:51:22,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 17:51:22,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 17:51:22,618 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 17:51:22,618 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-08 17:51:22,618 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 17:51:22,618 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-08 17:51:22,618 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 17:51:22,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 17:51:22,619 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 17:51:22,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 17:51:22,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 17:51:22,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 17:51:22,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 17:51:22,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:51:22,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 17:51:22,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 17:51:22,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 17:51:22,624 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-08 17:51:22,624 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-08 17:51:22,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 17:51:22,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 17:51:22,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 17:51:22,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 17:51:22,626 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_58ff608b-c163-4460-87c5-a64fadb74dd1/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e
[2024-11-08 17:51:22,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 17:51:23,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 17:51:23,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 17:51:23,026 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 17:51:23,026 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 17:51:23,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/reducercommutativity/max10-1.i
Unable to find full path for "g++"
[2024-11-08 17:51:25,109 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 17:51:25,351 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 17:51:25,351 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/sv-benchmarks/c/reducercommutativity/max10-1.i
[2024-11-08 17:51:25,359 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data/23c92320d/75ec293364c3469397883b7208ffd8e0/FLAGd0baa2f01
[2024-11-08 17:51:25,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/data/23c92320d/75ec293364c3469397883b7208ffd8e0
[2024-11-08 17:51:25,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 17:51:25,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 17:51:25,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 17:51:25,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 17:51:25,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 17:51:25,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:51:25" (1/1) ...
[2024-11-08 17:51:25,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af5ef6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:25, skipping insertion in model container
[2024-11-08 17:51:25,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:51:25" (1/1) ...
[2024-11-08 17:51:25,721 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 17:51:25,944 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_58ff608b-c163-4460-87c5-a64fadb74dd1/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303]
[2024-11-08 17:51:25,953 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:51:25,969 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 17:51:26,002 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_58ff608b-c163-4460-87c5-a64fadb74dd1/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303]
[2024-11-08 17:51:26,007 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 17:51:26,035 INFO L204 MainTranslator]: Completed translation
[2024-11-08 17:51:26,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26 WrapperNode
[2024-11-08 17:51:26,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 17:51:26,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 17:51:26,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 17:51:26,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 17:51:26,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,077 INFO L138 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63
[2024-11-08 17:51:26,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 17:51:26,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 17:51:26,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 17:51:26,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 17:51:26,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,108 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5].
[2024-11-08 17:51:26,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 17:51:26,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 17:51:26,144 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 17:51:26,144 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 17:51:26,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (1/1) ...
[2024-11-08 17:51:26,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 17:51:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:26,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 17:51:26,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 17:51:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 17:51:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure max
[2024-11-08 17:51:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure max
[2024-11-08 17:51:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-08 17:51:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-08 17:51:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-08 17:51:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0
[2024-11-08 17:51:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1
[2024-11-08 17:51:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 17:51:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 17:51:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-08 17:51:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-11-08 17:51:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-11-08 17:51:26,332 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 17:51:26,334 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 17:51:26,586 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-08 17:51:26,586 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 17:51:26,599 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 17:51:26,600 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 17:51:26,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:51:26 BoogieIcfgContainer
[2024-11-08 17:51:26,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 17:51:26,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 17:51:26,604 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 17:51:26,610 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 17:51:26,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:51:25" (1/3) ...
[2024-11-08 17:51:26,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3672d515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:51:26, skipping insertion in model container
[2024-11-08 17:51:26,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:26" (2/3) ...
[2024-11-08 17:51:26,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3672d515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:51:26, skipping insertion in model container
[2024-11-08 17:51:26,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:51:26" (3/3) ...
[2024-11-08 17:51:26,615 INFO L112 eAbstractionObserver]: Analyzing ICFG max10-1.i
[2024-11-08 17:51:26,634 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 17:51:26,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 17:51:26,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 17:51:26,703 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;@2c620ff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 17:51:26,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 17:51:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-11-08 17:51:26,716 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:26,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:26,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:26,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1891818562, now seen corresponding path program 1 times
[2024-11-08 17:51:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:26,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944344566]
[2024-11-08 17:51:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:51:26,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:26,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:26,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:26,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 17:51:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:51:26,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:26,878 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:51:26,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:51:26,925 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:26,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944344566]
[2024-11-08 17:51:26,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944344566] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:51:26,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:51:26,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 17:51:26,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564657457]
[2024-11-08 17:51:26,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:51:26,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:51:26,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:26,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:51:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:51:26,959 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:51:27,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:27,018 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions.
[2024-11-08 17:51:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:51:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29
[2024-11-08 17:51:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:27,031 INFO L225 Difference]: With dead ends: 56
[2024-11-08 17:51:27,032 INFO L226 Difference]: Without dead ends: 27
[2024-11-08 17:51:27,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:51:27,042 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:27,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:51:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2024-11-08 17:51:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2024-11-08 17:51:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions.
[2024-11-08 17:51:27,087 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 29
[2024-11-08 17:51:27,087 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:27,087 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions.
[2024-11-08 17:51:27,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:51:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions.
[2024-11-08 17:51:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2024-11-08 17:51:27,092 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:27,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:27,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 17:51:27,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:27,294 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:27,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1135630941, now seen corresponding path program 1 times
[2024-11-08 17:51:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038912885]
[2024-11-08 17:51:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:51:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:27,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:27,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:27,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 17:51:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:51:27,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:27,404 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 17:51:27,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:51:27,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038912885]
[2024-11-08 17:51:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038912885] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:51:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:51:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 17:51:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348169068]
[2024-11-08 17:51:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:51:27,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:51:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:51:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:51:27,436 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:51:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:27,469 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions.
[2024-11-08 17:51:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:51:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31
[2024-11-08 17:51:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:27,471 INFO L225 Difference]: With dead ends: 50
[2024-11-08 17:51:27,471 INFO L226 Difference]: Without dead ends: 31
[2024-11-08 17:51:27,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:51:27,473 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:27,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:51:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-08 17:51:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29.
[2024-11-08 17:51:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions.
[2024-11-08 17:51:27,481 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 31
[2024-11-08 17:51:27,481 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:27,482 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions.
[2024-11-08 17:51:27,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:51:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions.
[2024-11-08 17:51:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-11-08 17:51:27,483 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:27,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:27,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 17:51:27,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:27,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:27,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash -693052716, now seen corresponding path program 1 times
[2024-11-08 17:51:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:27,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407935548]
[2024-11-08 17:51:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:51:27,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:27,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:27,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:27,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 17:51:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:51:27,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:27,803 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2024-11-08 17:51:27,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 17:51:27,833 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407935548]
[2024-11-08 17:51:27,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407935548] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 17:51:27,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 17:51:27,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 17:51:27,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834481290]
[2024-11-08 17:51:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 17:51:27,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 17:51:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 17:51:27,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:51:27,840 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:51:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:27,880 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions.
[2024-11-08 17:51:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 17:51:27,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43
[2024-11-08 17:51:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:27,882 INFO L225 Difference]: With dead ends: 47
[2024-11-08 17:51:27,882 INFO L226 Difference]: Without dead ends: 31
[2024-11-08 17:51:27,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 17:51:27,884 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:27,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:51:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-08 17:51:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2024-11-08 17:51:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions.
[2024-11-08 17:51:27,891 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 43
[2024-11-08 17:51:27,892 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:27,893 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions.
[2024-11-08 17:51:27,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-08 17:51:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions.
[2024-11-08 17:51:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2024-11-08 17:51:27,894 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:27,895 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:27,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 17:51:28,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:28,099 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:28,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 298705295, now seen corresponding path program 1 times
[2024-11-08 17:51:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:28,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046004794]
[2024-11-08 17:51:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 17:51:28,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:28,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:28,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 17:51:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:51:28,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:28,216 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 17:51:28,255 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:51:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2024-11-08 17:51:28,324 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:28,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046004794]
[2024-11-08 17:51:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046004794] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:51:28,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:51:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-11-08 17:51:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105001229]
[2024-11-08 17:51:28,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:51:28,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:51:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:51:28,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:51:28,332 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-08 17:51:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:28,413 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions.
[2024-11-08 17:51:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:51:28,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45
[2024-11-08 17:51:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:28,415 INFO L225 Difference]: With dead ends: 61
[2024-11-08 17:51:28,415 INFO L226 Difference]: Without dead ends: 36
[2024-11-08 17:51:28,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:51:28,416 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:28,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:51:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-11-08 17:51:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2024-11-08 17:51:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions.
[2024-11-08 17:51:28,426 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 45
[2024-11-08 17:51:28,426 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:28,426 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions.
[2024-11-08 17:51:28,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-08 17:51:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions.
[2024-11-08 17:51:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-11-08 17:51:28,428 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:28,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:28,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 17:51:28,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:28,629 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:28,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1643087456, now seen corresponding path program 2 times
[2024-11-08 17:51:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791610906]
[2024-11-08 17:51:28,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 17:51:28,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:28,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:28,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 17:51:28,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 17:51:28,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:51:28,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:28,764 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2024-11-08 17:51:28,790 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:51:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2024-11-08 17:51:28,837 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791610906]
[2024-11-08 17:51:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791610906] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:51:28,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:51:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-11-08 17:51:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933763720]
[2024-11-08 17:51:28,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:51:28,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:51:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:51:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:51:28,841 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:51:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:28,904 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions.
[2024-11-08 17:51:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:51:28,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51
[2024-11-08 17:51:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:28,906 INFO L225 Difference]: With dead ends: 57
[2024-11-08 17:51:28,907 INFO L226 Difference]: Without dead ends: 41
[2024-11-08 17:51:28,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:51:28,908 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:28,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 79 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 17:51:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2024-11-08 17:51:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2024-11-08 17:51:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions.
[2024-11-08 17:51:28,917 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 51
[2024-11-08 17:51:28,917 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:28,918 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions.
[2024-11-08 17:51:28,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:51:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions.
[2024-11-08 17:51:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2024-11-08 17:51:28,920 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:28,920 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:28,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 17:51:29,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:29,121 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:29,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2124305263, now seen corresponding path program 3 times
[2024-11-08 17:51:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903896715]
[2024-11-08 17:51:29,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 17:51:29,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:29,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:29,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:29,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 17:51:29,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-08 17:51:29,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:51:29,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:29,242 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2024-11-08 17:51:29,282 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:51:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2024-11-08 17:51:29,352 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903896715]
[2024-11-08 17:51:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903896715] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:51:29,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:51:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2024-11-08 17:51:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276383758]
[2024-11-08 17:51:29,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:51:29,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 17:51:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 17:51:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-11-08 17:51:29,356 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:51:29,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:29,448 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions.
[2024-11-08 17:51:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 17:51:29,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57
[2024-11-08 17:51:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:29,451 INFO L225 Difference]: With dead ends: 80
[2024-11-08 17:51:29,453 INFO L226 Difference]: Without dead ends: 52
[2024-11-08 17:51:29,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42
[2024-11-08 17:51:29,455 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:29,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 99 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:51:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2024-11-08 17:51:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2024-11-08 17:51:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions.
[2024-11-08 17:51:29,474 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 57
[2024-11-08 17:51:29,475 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:29,475 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions.
[2024-11-08 17:51:29,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-08 17:51:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions.
[2024-11-08 17:51:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2024-11-08 17:51:29,481 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:29,481 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:29,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-08 17:51:29,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:29,682 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:29,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1626986614, now seen corresponding path program 4 times
[2024-11-08 17:51:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111402120]
[2024-11-08 17:51:29,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 17:51:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:29,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:29,686 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:29,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 17:51:29,859 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 17:51:29,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:51:29,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:29,869 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 154 proven. 16 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked.
[2024-11-08 17:51:29,935 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:51:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked.
[2024-11-08 17:51:30,068 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:30,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111402120]
[2024-11-08 17:51:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111402120] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:51:30,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:51:30,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-08 17:51:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089231868]
[2024-11-08 17:51:30,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:51:30,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 17:51:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 17:51:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:51:30,072 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:51:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:30,283 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions.
[2024-11-08 17:51:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-08 17:51:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93
[2024-11-08 17:51:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:30,285 INFO L225 Difference]: With dead ends: 89
[2024-11-08 17:51:30,285 INFO L226 Difference]: Without dead ends: 62
[2024-11-08 17:51:30,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210
[2024-11-08 17:51:30,286 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:30,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 148 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:51:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2024-11-08 17:51:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2024-11-08 17:51:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions.
[2024-11-08 17:51:30,296 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 93
[2024-11-08 17:51:30,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:30,296 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions.
[2024-11-08 17:51:30,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-08 17:51:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions.
[2024-11-08 17:51:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2024-11-08 17:51:30,298 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:30,299 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:30,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 17:51:30,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:30,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:30,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1440959453, now seen corresponding path program 5 times
[2024-11-08 17:51:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:30,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136345861]
[2024-11-08 17:51:30,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 17:51:30,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:30,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:30,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 17:51:38,308 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2024-11-08 17:51:38,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:51:38,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:38,328 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2024-11-08 17:51:38,405 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:51:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked.
[2024-11-08 17:51:38,699 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136345861]
[2024-11-08 17:51:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136345861] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:51:38,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:51:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13
[2024-11-08 17:51:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276915879]
[2024-11-08 17:51:38,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:51:38,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 17:51:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 17:51:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2024-11-08 17:51:38,705 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2024-11-08 17:51:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:39,027 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions.
[2024-11-08 17:51:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:51:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103
[2024-11-08 17:51:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:39,031 INFO L225 Difference]: With dead ends: 135
[2024-11-08 17:51:39,031 INFO L226 Difference]: Without dead ends: 86
[2024-11-08 17:51:39,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272
[2024-11-08 17:51:39,036 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:39,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 192 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-08 17:51:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2024-11-08 17:51:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2024-11-08 17:51:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 81 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions.
[2024-11-08 17:51:39,051 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 103
[2024-11-08 17:51:39,051 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:39,052 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions.
[2024-11-08 17:51:39,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5)
[2024-11-08 17:51:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions.
[2024-11-08 17:51:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2024-11-08 17:51:39,058 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:39,058 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 9, 9, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:39,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 17:51:39,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:39,259 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:39,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1523000103, now seen corresponding path program 6 times
[2024-11-08 17:51:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:39,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12469681]
[2024-11-08 17:51:39,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-08 17:51:39,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:39,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:39,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:39,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 17:51:39,578 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2024-11-08 17:51:39,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 17:51:39,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:39,587 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked.
[2024-11-08 17:51:39,643 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:51:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1942 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked.
[2024-11-08 17:51:39,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-08 17:51:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12469681]
[2024-11-08 17:51:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12469681] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 17:51:39,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 17:51:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-08 17:51:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634960484]
[2024-11-08 17:51:39,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 17:51:39,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 17:51:39,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-08 17:51:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 17:51:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2024-11-08 17:51:39,783 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-08 17:51:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 17:51:40,002 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions.
[2024-11-08 17:51:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 17:51:40,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 175
[2024-11-08 17:51:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 17:51:40,004 INFO L225 Difference]: With dead ends: 173
[2024-11-08 17:51:40,004 INFO L226 Difference]: Without dead ends: 98
[2024-11-08 17:51:40,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240
[2024-11-08 17:51:40,005 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 17:51:40,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 203 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 17:51:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2024-11-08 17:51:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98.
[2024-11-08 17:51:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-08 17:51:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions.
[2024-11-08 17:51:40,016 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 175
[2024-11-08 17:51:40,016 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-08 17:51:40,016 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions.
[2024-11-08 17:51:40,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-08 17:51:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions.
[2024-11-08 17:51:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2024-11-08 17:51:40,019 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-08 17:51:40,019 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 17:51:40,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-08 17:51:40,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:40,219 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 17:51:40,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 17:51:40,220 INFO L85 PathProgramCache]: Analyzing trace with hash 422171145, now seen corresponding path program 7 times
[2024-11-08 17:51:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-08 17:51:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408163131]
[2024-11-08 17:51:40,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-08 17:51:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 17:51:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 17:51:40,222 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 17:51:40,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58ff608b-c163-4460-87c5-a64fadb74dd1/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 17:51:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 17:51:40,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 100 conjuncts are in the unsatisfiable core
[2024-11-08 17:51:40,589 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 17:51:41,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:51:41,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 24
[2024-11-08 17:51:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 1150 proven. 249 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked.
[2024-11-08 17:51:43,210 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 17:52:17,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 17:52:17,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 164 treesize of output 60