./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
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_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7d18364cf74a7e83a7d0637d6dc5303d99591a287435332871b1650f13e39eb3
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:37:55,889 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:37:56,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:37:56,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:37:56,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:37:56,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:37:56,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:37:56,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:37:56,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:37:56,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:37:56,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:37:56,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:37:56,082 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:37:56,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:37:56,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:37:56,086 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:37:56,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:37:56,087 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:37:56,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:37:56,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:37:56,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:37:56,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:37:56,089 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:37:56,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:37:56,090 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:37:56,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:37:56,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:37:56,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:37:56,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:37:56,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:37:56,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:37:56,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:37:56,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:37:56,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:37:56,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:37:56,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:37:56,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:37:56,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:37:56,096 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:37:56,097 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_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d18364cf74a7e83a7d0637d6dc5303d99591a287435332871b1650f13e39eb3
[2023-11-19 07:37:56,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:37:56,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:37:56,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:37:56,465 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:37:56,465 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:37:56,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c
[2023-11-19 07:37:59,760 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:38:00,059 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:38:00,061 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c
[2023-11-19 07:38:00,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/data/bb84aeba8/3a14e4c8f6f24933aed941f624c0e41d/FLAG1f347fcd6
[2023-11-19 07:38:00,100 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/data/bb84aeba8/3a14e4c8f6f24933aed941f624c0e41d
[2023-11-19 07:38:00,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:38:00,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:38:00,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:38:00,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:38:00,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:38:00,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5b46a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00, skipping insertion in model container
[2023-11-19 07:38:00,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,175 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:38:00,420 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933]
[2023-11-19 07:38:00,433 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:38:00,444 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:38:00,532 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933]
[2023-11-19 07:38:00,544 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:38:00,561 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:38:00,583 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:38:00,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00 WrapperNode
[2023-11-19 07:38:00,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:38:00,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:38:00,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:38:00,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:38:00,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,676 INFO L138 Inliner]: procedures = 17, calls = 199, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 360
[2023-11-19 07:38:00,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:38:00,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:38:00,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:38:00,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:38:00,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:38:00,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:38:00,761 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:38:00,761 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:38:00,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (1/1) ...
[2023-11-19 07:38:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:38:00,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:38:00,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:38:00,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:38:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-19 07:38:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure fopen
[2023-11-19 07:38:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:38:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:38:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:38:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:38:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:38:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:38:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:38:00,948 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:38:00,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:38:01,890 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:38:01,901 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:38:01,901 INFO L302 CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-19 07:38:01,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:01 BoogieIcfgContainer
[2023-11-19 07:38:01,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:38:01,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:38:01,909 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:38:01,913 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:38:01,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:00" (1/3) ...
[2023-11-19 07:38:01,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240836f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:01, skipping insertion in model container
[2023-11-19 07:38:01,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00" (2/3) ...
[2023-11-19 07:38:01,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240836f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:01, skipping insertion in model container
[2023-11-19 07:38:01,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:01" (3/3) ...
[2023-11-19 07:38:01,918 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c
[2023-11-19 07:38:01,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:38:01,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 07:38:02,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:38:02,013 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29fef2f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:38:02,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 07:38:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-19 07:38:02,026 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:38:02,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:02,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:38:02,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1180906794, now seen corresponding path program 1 times
[2023-11-19 07:38:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371316536]
[2023-11-19 07:38:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371316536]
[2023-11-19 07:38:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371316536] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:02,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:38:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420373243]
[2023-11-19 07:38:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:02,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:38:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:38:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:38:02,982 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:38:03,041 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions.
[2023-11-19 07:38:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:38:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2023-11-19 07:38:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:38:03,052 INFO L225 Difference]: With dead ends: 28
[2023-11-19 07:38:03,052 INFO L226 Difference]: Without dead ends: 19
[2023-11-19 07:38:03,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:38:03,059 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:38:03,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 41 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:38:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2023-11-19 07:38:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13.
[2023-11-19 07:38:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2023-11-19 07:38:03,092 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9
[2023-11-19 07:38:03,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:38:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2023-11-19 07:38:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2023-11-19 07:38:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-19 07:38:03,094 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:38:03,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:03,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:38:03,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:38:03,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1181383450, now seen corresponding path program 1 times
[2023-11-19 07:38:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:03,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507342020]
[2023-11-19 07:38:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:03,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507342020]
[2023-11-19 07:38:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507342020] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:38:03,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:38:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:38:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351750024]
[2023-11-19 07:38:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:38:03,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:38:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:38:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:38:03,710 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:38:03,751 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions.
[2023-11-19 07:38:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:38:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2023-11-19 07:38:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:38:03,754 INFO L225 Difference]: With dead ends: 30
[2023-11-19 07:38:03,754 INFO L226 Difference]: Without dead ends: 20
[2023-11-19 07:38:03,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:38:03,761 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:38:03,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:38:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2023-11-19 07:38:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16.
[2023-11-19 07:38:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2023-11-19 07:38:03,774 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9
[2023-11-19 07:38:03,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:38:03,774 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2023-11-19 07:38:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2023-11-19 07:38:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2023-11-19 07:38:03,777 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:38:03,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:03,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:38:03,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:38:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -181774814, now seen corresponding path program 1 times
[2023-11-19 07:38:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630936477]
[2023-11-19 07:38:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630936477]
[2023-11-19 07:38:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630936477] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:38:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327121921]
[2023-11-19 07:38:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:38:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:38:04,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:38:04,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:38:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:04,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-19 07:38:04,858 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:38:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:04,913 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:38:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:04,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327121921] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:38:04,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:38:04,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9
[2023-11-19 07:38:04,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026285201]
[2023-11-19 07:38:04,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:38:04,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-19 07:38:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:05,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-19 07:38:05,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-11-19 07:38:05,002 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:38:05,245 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions.
[2023-11-19 07:38:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-11-19 07:38:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2023-11-19 07:38:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:38:05,256 INFO L225 Difference]: With dead ends: 49
[2023-11-19 07:38:05,256 INFO L226 Difference]: Without dead ends: 39
[2023-11-19 07:38:05,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:38:05,261 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 07:38:05,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 40 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 07:38:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2023-11-19 07:38:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34.
[2023-11-19 07:38:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions.
[2023-11-19 07:38:05,279 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 15
[2023-11-19 07:38:05,279 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:38:05,280 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions.
[2023-11-19 07:38:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions.
[2023-11-19 07:38:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-11-19 07:38:05,283 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:38:05,283 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:05,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:38:05,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:38:05,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:38:05,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1399161658, now seen corresponding path program 2 times
[2023-11-19 07:38:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:05,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92103932]
[2023-11-19 07:38:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:05,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92103932]
[2023-11-19 07:38:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92103932] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:38:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499162748]
[2023-11-19 07:38:06,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:38:06,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:38:06,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:38:06,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:38:06,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:38:06,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:38:06,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:38:06,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-11-19 07:38:06,594 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:38:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:06,676 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:38:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499162748] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:38:06,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:38:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15
[2023-11-19 07:38:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871740093]
[2023-11-19 07:38:06,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:38:06,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 07:38:06,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 07:38:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:38:06,882 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:38:07,444 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions.
[2023-11-19 07:38:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2023-11-19 07:38:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33
[2023-11-19 07:38:07,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:38:07,446 INFO L225 Difference]: With dead ends: 85
[2023-11-19 07:38:07,446 INFO L226 Difference]: Without dead ends: 75
[2023-11-19 07:38:07,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702
[2023-11-19 07:38:07,448 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 84 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-19 07:38:07,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 110 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-19 07:38:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2023-11-19 07:38:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70.
[2023-11-19 07:38:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions.
[2023-11-19 07:38:07,457 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 33
[2023-11-19 07:38:07,457 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:38:07,457 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions.
[2023-11-19 07:38:07,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions.
[2023-11-19 07:38:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2023-11-19 07:38:07,460 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:38:07,460 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:38:07,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:38:07,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:38:07,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:38:07,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:38:07,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1756175210, now seen corresponding path program 3 times
[2023-11-19 07:38:07,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:38:07,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313433081]
[2023-11-19 07:38:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:38:07,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:38:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:38:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:38:08,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:38:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313433081]
[2023-11-19 07:38:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313433081] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:38:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524845781]
[2023-11-19 07:38:08,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 07:38:08,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:38:08,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:38:08,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:38:08,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 07:38:09,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2023-11-19 07:38:09,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:38:09,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-11-19 07:38:09,333 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:38:09,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-11-19 07:38:09,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17
[2023-11-19 07:38:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 56 proven. 39 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked.
[2023-11-19 07:38:09,961 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:38:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 75 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked.
[2023-11-19 07:38:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524845781] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:38:11,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:38:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26
[2023-11-19 07:38:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861987094]
[2023-11-19 07:38:11,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:38:11,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2023-11-19 07:38:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:38:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2023-11-19 07:38:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650
[2023-11-19 07:38:11,979 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:38:13,298 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions.
[2023-11-19 07:38:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2023-11-19 07:38:13,300 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69
[2023-11-19 07:38:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:38:13,301 INFO L225 Difference]: With dead ends: 90
[2023-11-19 07:38:13,301 INFO L226 Difference]: Without dead ends: 0
[2023-11-19 07:38:13,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=576, Invalid=2076, Unknown=0, NotChecked=0, Total=2652
[2023-11-19 07:38:13,303 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 170 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-19 07:38:13,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 248 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-19 07:38:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-11-19 07:38:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-11-19 07:38:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-11-19 07:38:13,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69
[2023-11-19 07:38:13,305 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:38:13,305 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-11-19 07:38:13,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:38:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-11-19 07:38:13,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2023-11-19 07:38:13,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-19 07:38:13,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:38:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:38:13,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-11-19 07:38:13,531 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed.
[2023-11-19 07:38:13,531 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 217) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 222) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 133 225) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-11-19 07:38:13,532 INFO L899 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed.
[2023-11-19 07:38:13,533 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-11-19 07:38:13,533 INFO L899 garLoopResultBuilder]: For program point L185(lines 182 217) no Hoare annotation was computed.
[2023-11-19 07:38:13,533 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed.
[2023-11-19 07:38:13,533 INFO L899 garLoopResultBuilder]: For program point L175(lines 167 223) no Hoare annotation was computed.
[2023-11-19 07:38:13,536 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1]
[2023-11-19 07:38:13,538 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:38:13,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:38:13 BoogieIcfgContainer
[2023-11-19 07:38:13,545 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:38:13,546 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:38:13,546 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:38:13,546 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 07:38:13,546 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:01" (3/4) ...
[2023-11-19 07:38:13,548 INFO L137 WitnessPrinter]: Generating witness for correct program
[2023-11-19 07:38:13,566 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges
[2023-11-19 07:38:13,567 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges
[2023-11-19 07:38:13,568 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2023-11-19 07:38:13,569 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-19 07:38:13,570 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-19 07:38:13,795 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml
[2023-11-19 07:38:13,796 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/witness.yml
[2023-11-19 07:38:13,796 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:38:13,797 INFO L158 Benchmark]: Toolchain (without parser) took 13686.45ms. Allocated memory was 176.2MB in the beginning and 331.4MB in the end (delta: 155.2MB). Free memory was 129.9MB in the beginning and 264.8MB in the end (delta: -134.9MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB.
[2023-11-19 07:38:13,797 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 119.5MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:38:13,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.20ms. Allocated memory is still 176.2MB. Free memory was 129.6MB in the beginning and 113.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-11-19 07:38:13,798 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.87ms. Allocated memory is still 176.2MB. Free memory was 113.0MB in the beginning and 109.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:38:13,798 INFO L158 Benchmark]: Boogie Preprocessor took 82.28ms. Allocated memory is still 176.2MB. Free memory was 109.7MB in the beginning and 106.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 07:38:13,798 INFO L158 Benchmark]: RCFGBuilder took 1144.59ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 106.2MB in the beginning and 161.9MB in the end (delta: -55.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB.
[2023-11-19 07:38:13,799 INFO L158 Benchmark]: TraceAbstraction took 11636.23ms. Allocated memory was 228.6MB in the beginning and 331.4MB in the end (delta: 102.8MB). Free memory was 160.9MB in the beginning and 279.0MB in the end (delta: -118.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:38:13,799 INFO L158 Benchmark]: Witness Printer took 250.32ms. Allocated memory is still 331.4MB. Free memory was 279.0MB in the beginning and 264.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-11-19 07:38:13,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25ms. Allocated memory is still 119.5MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 472.20ms. Allocated memory is still 176.2MB. Free memory was 129.6MB in the beginning and 113.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 91.87ms. Allocated memory is still 176.2MB. Free memory was 113.0MB in the beginning and 109.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 82.28ms. Allocated memory is still 176.2MB. Free memory was 109.7MB in the beginning and 106.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* RCFGBuilder took 1144.59ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 106.2MB in the beginning and 161.9MB in the end (delta: -55.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 11636.23ms. Allocated memory was 228.6MB in the beginning and 331.4MB in the end (delta: 102.8MB). Free memory was 160.9MB in the beginning and 279.0MB in the end (delta: -118.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 250.32ms. Allocated memory is still 331.4MB. Free memory was 279.0MB in the beginning and 264.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 193]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 321 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 321 mSDsluCounter, 460 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 382 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 750 IncrementalHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 78 mSDtfsCounter, 750 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 252 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 358 ConstructedInterpolants, 55 QuantifiedInterpolants, 3765 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1729 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 576/1143 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-11-19 07:38:13,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca40cb70-00b0-4a51-9926-d9c6878ca256/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE