./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label45.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --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 4e59a15da4f04434f770517ae43c99b2723b189ac06ba438a80c7e04940e931c
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 17:27:11,580 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 17:27:11,582 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 17:27:11,616 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 17:27:11,617 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 17:27:11,618 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 17:27:11,620 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 17:27:11,622 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 17:27:11,624 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 17:27:11,625 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 17:27:11,626 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 17:27:11,627 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 17:27:11,628 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 17:27:11,629 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 17:27:11,630 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 17:27:11,632 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 17:27:11,633 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 17:27:11,634 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 17:27:11,636 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 17:27:11,638 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 17:27:11,640 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 17:27:11,641 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 17:27:11,643 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 17:27:11,644 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 17:27:11,647 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 17:27:11,647 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 17:27:11,648 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 17:27:11,649 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 17:27:11,649 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 17:27:11,650 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 17:27:11,651 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 17:27:11,651 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 17:27:11,652 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 17:27:11,653 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 17:27:11,653 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 17:27:11,653 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 17:27:11,654 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 17:27:11,654 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 17:27:11,654 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 17:27:11,655 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 17:27:11,655 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 17:27:11,656 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 17:27:11,678 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 17:27:11,678 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 17:27:11,678 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 17:27:11,679 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 17:27:11,679 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 17:27:11,679 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 17:27:11,680 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 17:27:11,680 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 17:27:11,680 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 17:27:11,681 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 17:27:11,681 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 17:27:11,681 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 17:27:11,681 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 17:27:11,681 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 17:27:11,681 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 17:27:11,682 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 17:27:11,682 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 17:27:11,682 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 17:27:11,682 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 17:27:11,682 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 17:27:11,682 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 17:27:11,683 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 17:27:11,683 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 17:27:11,683 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 17:27:11,683 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 17:27:11,683 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 17:27:11,683 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 17:27:11,683 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 17:27:11,683 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 17:27:11,684 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 17:27:11,684 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 17:27:11,684 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 17:27:11,684 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 17:27:11,684 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 17:27:11,684 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/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_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 -> 4e59a15da4f04434f770517ae43c99b2723b189ac06ba438a80c7e04940e931c
[2021-12-06 17:27:11,867 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 17:27:11,885 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 17:27:11,887 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 17:27:11,888 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 17:27:11,888 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 17:27:11,890 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label45.c
[2021-12-06 17:27:11,931 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/data/f55326ab1/5c1d26b50bb04f2cbd2df6b04434a40d/FLAG177535e8d
[2021-12-06 17:27:13,297 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 17:27:13,297 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/sv-benchmarks/c/eca-rers2012/Problem07_label45.c
[2021-12-06 17:27:13,482 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/data/f55326ab1/5c1d26b50bb04f2cbd2df6b04434a40d/FLAG177535e8d
[2021-12-06 17:27:13,966 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/data/f55326ab1/5c1d26b50bb04f2cbd2df6b04434a40d
[2021-12-06 17:27:13,968 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 17:27:13,969 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 17:27:13,970 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 17:27:13,970 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 17:27:13,973 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 17:27:13,973 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:27:13" (1/1) ...
[2021-12-06 17:27:13,974 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b414ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:13, skipping insertion in model container
[2021-12-06 17:27:13,975 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:27:13" (1/1) ...
[2021-12-06 17:27:13,981 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 17:27:14,669 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 17:27:24,691 WARN  L230   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_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/sv-benchmarks/c/eca-rers2012/Problem07_label45.c[2773246,2773259]
[2021-12-06 17:27:24,751 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 17:27:24,758 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 17:27:30,689 WARN  L230   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_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/sv-benchmarks/c/eca-rers2012/Problem07_label45.c[2773246,2773259]
[2021-12-06 17:27:30,695 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 17:27:31,454 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 17:27:31,455 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31 WrapperNode
[2021-12-06 17:27:31,455 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 17:27:31,455 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 17:27:31,456 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 17:27:31,456 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 17:27:31,461 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:31,811 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:33,404 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 17:27:33,404 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 17:27:33,405 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 17:27:33,405 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 17:27:33,405 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 17:27:33,412 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:33,413 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:33,627 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:33,628 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:34,286 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:34,426 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:34,531 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:34,832 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 17:27:34,833 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 17:27:34,833 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 17:27:34,833 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 17:27:34,834 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (1/1) ...
[2021-12-06 17:27:34,841 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 17:27:34,849 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 17:27:34,862 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 17:27:34,864 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ebbdf09-57c4-46ed-ad60-52a3feab77b5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 17:27:34,901 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 17:27:34,901 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 17:27:34,901 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 17:27:34,902 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 17:27:35,045 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 17:27:35,047 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 17:27:58,794 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 17:27:58,837 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 17:27:58,838 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 17:27:58,846 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:27:58 BoogieIcfgContainer
[2021-12-06 17:27:58,846 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 17:27:58,848 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 17:27:58,848 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 17:27:58,850 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 17:27:58,850 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:27:13" (1/3) ...
[2021-12-06 17:27:58,851 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4619116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:27:58, skipping insertion in model container
[2021-12-06 17:27:58,851 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:27:31" (2/3) ...
[2021-12-06 17:27:58,851 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4619116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:27:58, skipping insertion in model container
[2021-12-06 17:27:58,851 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:27:58" (3/3) ...
[2021-12-06 17:27:58,852 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label45.c
[2021-12-06 17:27:58,856 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 17:27:58,856 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 17:27:58,909 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 17:27:58,914 INFO  L339      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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 17:27:58,914 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 17:27:59,027 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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)
[2021-12-06 17:27:59,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10125
[2021-12-06 17:27:59,478 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:27:59,484 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 17:27:59,486 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:27:59,490 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:27:59,495 INFO  L85        PathProgramCache]: Analyzing trace with hash 458101362, now seen corresponding path program 1 times
[2021-12-06 17:27:59,501 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:27:59,501 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159611854]
[2021-12-06 17:27:59,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:27:59,505 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:28:01,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:28:24,448 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 17:28:24,449 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:28:24,449 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159611854]
[2021-12-06 17:28:24,449 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159611854] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:28:24,449 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:28:24,451 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:28:24,452 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72985405]
[2021-12-06 17:28:24,452 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:28:24,467 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 17:28:24,467 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:28:24,486 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 17:28:24,486 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:28:24,510 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 2531.0) internal successors, (10124), 3 states have internal predecessors, (10124), 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)
[2021-12-06 17:29:05,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:29:05,450 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2021-12-06 17:29:05,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-12-06 17:29:05,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2531.0) internal successors, (10124), 3 states have internal predecessors, (10124), 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 10124
[2021-12-06 17:29:05,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:29:05,606 INFO  L225             Difference]: With dead ends: 40898
[2021-12-06 17:29:05,606 INFO  L226             Difference]: Without dead ends: 30574
[2021-12-06 17:29:05,622 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-06 17:29:05,625 INFO  L933         BasicCegarLoop]: 5139 mSDtfsCounter, 22306 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22306 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19081 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time
[2021-12-06 17:29:05,626 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [22306 Valid, 5256 Invalid, 71053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19081 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 40.0s Time]
[2021-12-06 17:29:05,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2021-12-06 17:29:06,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2021-12-06 17:29:06,181 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 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)
[2021-12-06 17:29:06,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2021-12-06 17:29:06,248 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10124
[2021-12-06 17:29:06,261 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:29:06,261 INFO  L470      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2021-12-06 17:29:06,263 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2531.0) internal successors, (10124), 3 states have internal predecessors, (10124), 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)
[2021-12-06 17:29:06,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2021-12-06 17:29:07,205 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13024
[2021-12-06 17:29:07,205 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:29:07,216 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 17:29:07,216 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 17:29:07,216 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:29:07,217 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:29:07,221 INFO  L85        PathProgramCache]: Analyzing trace with hash 1682294251, now seen corresponding path program 1 times
[2021-12-06 17:29:07,221 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:29:07,221 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222182120]
[2021-12-06 17:29:07,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:29:07,222 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:29:08,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:29:40,069 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-12-06 17:29:40,069 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:29:40,069 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222182120]
[2021-12-06 17:29:40,069 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222182120] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:29:40,069 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:29:40,071 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 17:29:40,071 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931116318]
[2021-12-06 17:29:40,071 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:29:40,088 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:29:40,088 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:29:40,089 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:29:40,089 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:29:40,092 INFO  L87              Difference]: Start difference. First operand 30574 states and 45754 transitions. Second operand  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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)
[2021-12-06 17:30:03,628 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:30:03,629 INFO  L93              Difference]: Finished difference Result 71336 states and 116865 transitions.
[2021-12-06 17:30:03,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:30:03,631 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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 13023
[2021-12-06 17:30:03,633 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:30:03,704 INFO  L225             Difference]: With dead ends: 71336
[2021-12-06 17:30:03,704 INFO  L226             Difference]: Without dead ends: 50954
[2021-12-06 17:30:03,721 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:30:03,722 INFO  L933         BasicCegarLoop]: 4817 mSDtfsCounter, 10972 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-06 17:30:03,723 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10972 Valid, 4866 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-06 17:30:03,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50954 states.
[2021-12-06 17:30:04,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50954 to 50954.
[2021-12-06 17:30:04,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50954 states, 50953 states have (on average 1.4546935411065098) internal successors, (74121), 50953 states have internal predecessors, (74121), 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)
[2021-12-06 17:30:04,417 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50954 states to 50954 states and 74121 transitions.
[2021-12-06 17:30:04,418 INFO  L78                 Accepts]: Start accepts. Automaton has 50954 states and 74121 transitions. Word has length 13023
[2021-12-06 17:30:04,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:30:04,421 INFO  L470      AbstractCegarLoop]: Abstraction has 50954 states and 74121 transitions.
[2021-12-06 17:30:04,423 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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)
[2021-12-06 17:30:04,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 50954 states and 74121 transitions.
[2021-12-06 17:30:05,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13025
[2021-12-06 17:30:05,449 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:30:05,455 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 17:30:05,455 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 17:30:05,456 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:30:05,456 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:30:05,459 INFO  L85        PathProgramCache]: Analyzing trace with hash 1623852297, now seen corresponding path program 1 times
[2021-12-06 17:30:05,459 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:30:05,459 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753010189]
[2021-12-06 17:30:05,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:30:05,460 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:30:06,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:30:35,835 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 17:30:35,835 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:30:35,835 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753010189]
[2021-12-06 17:30:35,835 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753010189] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:30:35,836 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:30:35,837 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:30:35,838 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532528505]
[2021-12-06 17:30:35,838 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:30:35,846 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:30:35,846 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:30:35,846 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:30:35,846 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:30:35,849 INFO  L87              Difference]: Start difference. First operand 50954 states and 74121 transitions. Second operand  has 3 states, 3 states have (on average 4341.333333333333) internal successors, (13024), 3 states have internal predecessors, (13024), 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)
[2021-12-06 17:30:57,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:30:57,740 INFO  L93              Difference]: Finished difference Result 112096 states and 166188 transitions.
[2021-12-06 17:30:57,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:30:57,742 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4341.333333333333) internal successors, (13024), 3 states have internal predecessors, (13024), 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 13024
[2021-12-06 17:30:57,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:30:57,820 INFO  L225             Difference]: With dead ends: 112096
[2021-12-06 17:30:57,820 INFO  L226             Difference]: Without dead ends: 71334
[2021-12-06 17:30:57,850 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:30:57,851 INFO  L933         BasicCegarLoop]: 18209 mSDtfsCounter, 10210 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33598 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 37351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time
[2021-12-06 17:30:57,851 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10210 Valid, 18260 Invalid, 37351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33598 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time]
[2021-12-06 17:30:57,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71334 states.
[2021-12-06 17:30:58,411 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71334 to 71334.
[2021-12-06 17:30:58,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71334 states, 71333 states have (on average 1.4101607951439026) internal successors, (100591), 71333 states have internal predecessors, (100591), 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)
[2021-12-06 17:30:58,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71334 states to 71334 states and 100591 transitions.
[2021-12-06 17:30:58,562 INFO  L78                 Accepts]: Start accepts. Automaton has 71334 states and 100591 transitions. Word has length 13024
[2021-12-06 17:30:58,566 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:30:58,566 INFO  L470      AbstractCegarLoop]: Abstraction has 71334 states and 100591 transitions.
[2021-12-06 17:30:58,567 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4341.333333333333) internal successors, (13024), 3 states have internal predecessors, (13024), 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)
[2021-12-06 17:30:58,567 INFO  L276                IsEmpty]: Start isEmpty. Operand 71334 states and 100591 transitions.
[2021-12-06 17:30:59,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13031
[2021-12-06 17:30:59,602 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:30:59,608 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 17:30:59,608 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 17:30:59,608 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:30:59,609 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:30:59,612 INFO  L85        PathProgramCache]: Analyzing trace with hash 525770874, now seen corresponding path program 1 times
[2021-12-06 17:30:59,612 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:30:59,612 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602720170]
[2021-12-06 17:30:59,613 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:30:59,613 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:31:00,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:31:31,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-12-06 17:31:31,385 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:31:31,385 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602720170]
[2021-12-06 17:31:31,385 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602720170] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:31:31,385 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:31:31,387 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 17:31:31,387 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186994739]
[2021-12-06 17:31:31,387 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:31:31,397 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:31:31,397 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:31:31,397 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:31:31,398 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:31:31,400 INFO  L87              Difference]: Start difference. First operand 71334 states and 100591 transitions. Second operand  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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)
[2021-12-06 17:31:55,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:31:55,873 INFO  L93              Difference]: Finished difference Result 193616 states and 281376 transitions.
[2021-12-06 17:31:55,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:31:55,875 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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 13030
[2021-12-06 17:31:55,877 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:31:55,988 INFO  L225             Difference]: With dead ends: 193616
[2021-12-06 17:31:55,988 INFO  L226             Difference]: Without dead ends: 132474
[2021-12-06 17:31:56,014 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:31:56,015 INFO  L933         BasicCegarLoop]: 6718 mSDtfsCounter, 10129 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27706 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10129 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 40736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-06 17:31:56,016 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10129 Valid, 6767 Invalid, 40736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27706 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-06 17:31:56,106 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132474 states.
[2021-12-06 17:31:57,116 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132474 to 132474.
[2021-12-06 17:31:57,204 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132474 states, 132473 states have (on average 1.319838759596295) internal successors, (174843), 132473 states have internal predecessors, (174843), 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)
[2021-12-06 17:31:57,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132474 states to 132474 states and 174843 transitions.
[2021-12-06 17:31:57,399 INFO  L78                 Accepts]: Start accepts. Automaton has 132474 states and 174843 transitions. Word has length 13030
[2021-12-06 17:31:57,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:31:57,402 INFO  L470      AbstractCegarLoop]: Abstraction has 132474 states and 174843 transitions.
[2021-12-06 17:31:57,403 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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)
[2021-12-06 17:31:57,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 132474 states and 174843 transitions.
[2021-12-06 17:31:58,616 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13041
[2021-12-06 17:31:58,616 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:31:58,622 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 17:31:58,623 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 17:31:58,623 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:31:58,623 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:31:58,626 INFO  L85        PathProgramCache]: Analyzing trace with hash 24725729, now seen corresponding path program 1 times
[2021-12-06 17:31:58,626 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:31:58,626 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843692448]
[2021-12-06 17:31:58,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:31:58,627 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:31:59,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:32:27,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 17:32:27,769 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:32:27,769 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843692448]
[2021-12-06 17:32:27,769 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843692448] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:32:27,769 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:32:27,771 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:32:27,771 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762315526]
[2021-12-06 17:32:27,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:32:27,779 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 17:32:27,779 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:32:27,779 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 17:32:27,779 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:32:27,782 INFO  L87              Difference]: Start difference. First operand 132474 states and 174843 transitions. Second operand  has 4 states, 4 states have (on average 3260.0) internal successors, (13040), 3 states have internal predecessors, (13040), 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)
[2021-12-06 17:33:05,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:33:05,178 INFO  L93              Difference]: Finished difference Result 458556 states and 616640 transitions.
[2021-12-06 17:33:05,179 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-06 17:33:05,180 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3260.0) internal successors, (13040), 3 states have internal predecessors, (13040), 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 13040
[2021-12-06 17:33:05,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:33:05,527 INFO  L225             Difference]: With dead ends: 458556
[2021-12-06 17:33:05,528 INFO  L226             Difference]: Without dead ends: 336274
[2021-12-06 17:33:05,584 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:33:05,585 INFO  L933         BasicCegarLoop]: 5415 mSDtfsCounter, 26549 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 40999 mSolverCounterSat, 28388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26549 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 69387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28388 IncrementalHoareTripleChecker+Valid, 40999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time
[2021-12-06 17:33:05,585 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [26549 Valid, 5513 Invalid, 69387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28388 Valid, 40999 Invalid, 0 Unknown, 0 Unchecked, 35.8s Time]
[2021-12-06 17:33:05,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336274 states.
[2021-12-06 17:33:08,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336274 to 336274.
[2021-12-06 17:33:08,634 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336274 states, 336273 states have (on average 1.2261376916969249) internal successors, (412317), 336273 states have internal predecessors, (412317), 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)
[2021-12-06 17:33:09,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336274 states to 336274 states and 412317 transitions.
[2021-12-06 17:33:09,097 INFO  L78                 Accepts]: Start accepts. Automaton has 336274 states and 412317 transitions. Word has length 13040
[2021-12-06 17:33:09,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:33:09,098 INFO  L470      AbstractCegarLoop]: Abstraction has 336274 states and 412317 transitions.
[2021-12-06 17:33:09,100 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3260.0) internal successors, (13040), 3 states have internal predecessors, (13040), 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)
[2021-12-06 17:33:09,100 INFO  L276                IsEmpty]: Start isEmpty. Operand 336274 states and 412317 transitions.
[2021-12-06 17:33:10,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13124
[2021-12-06 17:33:10,775 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:33:10,778 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 17:33:10,778 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 17:33:10,778 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:33:10,779 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:33:10,781 INFO  L85        PathProgramCache]: Analyzing trace with hash 990466211, now seen corresponding path program 1 times
[2021-12-06 17:33:10,781 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:33:10,781 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447191727]
[2021-12-06 17:33:10,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:33:10,783 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:33:11,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:33:40,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 3091 backedges. 3087 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-12-06 17:33:40,823 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:33:40,823 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447191727]
[2021-12-06 17:33:40,823 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447191727] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:33:40,824 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:33:40,825 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 17:33:40,826 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114494602]
[2021-12-06 17:33:40,826 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:33:40,831 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 17:33:40,832 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:33:40,832 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 17:33:40,832 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:33:40,835 INFO  L87              Difference]: Start difference. First operand 336274 states and 412317 transitions. Second operand  has 4 states, 4 states have (on average 3280.0) internal successors, (13120), 3 states have internal predecessors, (13120), 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)
[2021-12-06 17:34:22,586 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:34:22,587 INFO  L93              Difference]: Finished difference Result 1069956 states and 1329062 transitions.
[2021-12-06 17:34:22,587 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-06 17:34:22,589 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3280.0) internal successors, (13120), 3 states have internal predecessors, (13120), 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 13123
[2021-12-06 17:34:22,590 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:34:23,457 INFO  L225             Difference]: With dead ends: 1069956
[2021-12-06 17:34:23,457 INFO  L226             Difference]: Without dead ends: 743874
[2021-12-06 17:34:23,732 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 17:34:23,733 INFO  L933         BasicCegarLoop]: 7954 mSDtfsCounter, 17478 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 58154 mSolverCounterSat, 18126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17478 SdHoareTripleChecker+Valid, 8079 SdHoareTripleChecker+Invalid, 76280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18126 IncrementalHoareTripleChecker+Valid, 58154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time
[2021-12-06 17:34:23,733 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [17478 Valid, 8079 Invalid, 76280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18126 Valid, 58154 Invalid, 0 Unknown, 0 Unchecked, 38.6s Time]
[2021-12-06 17:34:24,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 743874 states.
[2021-12-06 17:34:29,858 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 743874 to 743874.
[2021-12-06 17:34:30,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 743874 states, 743873 states have (on average 1.1708517448542963) internal successors, (870965), 743873 states have internal predecessors, (870965), 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)
[2021-12-06 17:34:31,518 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 743874 states to 743874 states and 870965 transitions.
[2021-12-06 17:34:31,518 INFO  L78                 Accepts]: Start accepts. Automaton has 743874 states and 870965 transitions. Word has length 13123
[2021-12-06 17:34:31,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:34:31,520 INFO  L470      AbstractCegarLoop]: Abstraction has 743874 states and 870965 transitions.
[2021-12-06 17:34:31,521 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3280.0) internal successors, (13120), 3 states have internal predecessors, (13120), 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)
[2021-12-06 17:34:31,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 743874 states and 870965 transitions.
[2021-12-06 17:34:33,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13207
[2021-12-06 17:34:33,279 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:34:33,281 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 17:34:33,281 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 17:34:33,282 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:34:33,282 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:34:33,283 INFO  L85        PathProgramCache]: Analyzing trace with hash 1210428098, now seen corresponding path program 1 times
[2021-12-06 17:34:33,283 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:34:33,283 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166258728]
[2021-12-06 17:34:33,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:34:33,284 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:34:34,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 17:35:03,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 3254 backedges. 3068 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2021-12-06 17:35:03,609 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 17:35:03,609 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166258728]
[2021-12-06 17:35:03,610 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166258728] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 17:35:03,610 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 17:35:03,611 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 17:35:03,611 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517578926]
[2021-12-06 17:35:03,612 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 17:35:03,617 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 17:35:03,617 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 17:35:03,617 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 17:35:03,617 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:35:03,620 INFO  L87              Difference]: Start difference. First operand 743874 states and 870965 transitions. Second operand  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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)
[2021-12-06 17:35:32,765 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 17:35:32,765 INFO  L93              Difference]: Finished difference Result 2211236 states and 2592498 transitions.
[2021-12-06 17:35:32,766 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 17:35:32,767 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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 13206
[2021-12-06 17:35:32,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 17:35:34,597 INFO  L225             Difference]: With dead ends: 2211236
[2021-12-06 17:35:34,597 INFO  L226             Difference]: Without dead ends: 1477554
[2021-12-06 17:35:34,830 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 17:35:34,830 INFO  L933         BasicCegarLoop]: 6208 mSDtfsCounter, 9694 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30541 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9694 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 41042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-06 17:35:34,831 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9694 Valid, 6257 Invalid, 41042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30541 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-06 17:35:36,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1477554 states.
[2021-12-06 17:35:47,664 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477554 to 1477554.
[2021-12-06 17:35:48,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1477554 states, 1477553 states have (on average 1.1311425038560377) internal successors, (1671323), 1477553 states have internal predecessors, (1671323), 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)
[2021-12-06 17:35:50,919 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1477554 states to 1477554 states and 1671323 transitions.
[2021-12-06 17:35:50,919 INFO  L78                 Accepts]: Start accepts. Automaton has 1477554 states and 1671323 transitions. Word has length 13206
[2021-12-06 17:35:50,921 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 17:35:50,921 INFO  L470      AbstractCegarLoop]: Abstraction has 1477554 states and 1671323 transitions.
[2021-12-06 17:35:50,922 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4340.333333333333) internal successors, (13021), 2 states have internal predecessors, (13021), 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)
[2021-12-06 17:35:50,923 INFO  L276                IsEmpty]: Start isEmpty. Operand 1477554 states and 1671323 transitions.
[2021-12-06 17:35:53,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13434
[2021-12-06 17:35:53,672 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 17:35:53,674 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 17:35:53,674 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 17:35:53,675 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 17:35:53,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 17:35:53,676 INFO  L85        PathProgramCache]: Analyzing trace with hash 138328187, now seen corresponding path program 1 times
[2021-12-06 17:35:53,676 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 17:35:53,676 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886452188]
[2021-12-06 17:35:53,677 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 17:35:53,677 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 17:35:54,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat