./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label56.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_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/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_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label56.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/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_4ed8454d-7e96-470e-bf73-51abb6e24361/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 15ed19eb5795bed80c0398d5ac36df37e483370c3431a4e2b1af686401d8c839
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 19:39:15,750 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 19:39:15,752 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 19:39:15,781 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 19:39:15,782 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 19:39:15,783 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 19:39:15,785 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 19:39:15,786 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 19:39:15,788 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 19:39:15,788 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 19:39:15,789 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 19:39:15,790 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 19:39:15,791 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 19:39:15,791 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 19:39:15,793 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 19:39:15,794 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 19:39:15,794 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 19:39:15,795 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 19:39:15,797 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 19:39:15,798 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 19:39:15,800 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 19:39:15,801 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 19:39:15,802 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 19:39:15,803 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 19:39:15,805 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 19:39:15,806 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 19:39:15,806 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 19:39:15,807 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 19:39:15,807 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 19:39:15,808 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 19:39:15,808 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 19:39:15,809 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 19:39:15,810 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 19:39:15,810 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 19:39:15,811 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 19:39:15,811 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 19:39:15,812 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 19:39:15,812 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 19:39:15,812 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 19:39:15,813 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 19:39:15,813 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 19:39:15,814 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 19:39:15,831 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 19:39:15,831 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 19:39:15,831 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 19:39:15,831 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 19:39:15,832 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 19:39:15,832 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 19:39:15,832 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 19:39:15,832 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 19:39:15,833 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 19:39:15,833 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 19:39:15,834 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 19:39:15,834 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 19:39:15,834 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 19:39:15,834 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 19:39:15,834 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 19:39:15,834 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 19:39:15,834 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:39:15,834 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 19:39:15,835 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 19:39:15,835 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_4ed8454d-7e96-470e-bf73-51abb6e24361/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_4ed8454d-7e96-470e-bf73-51abb6e24361/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 -> 15ed19eb5795bed80c0398d5ac36df37e483370c3431a4e2b1af686401d8c839
[2021-12-06 19:39:16,028 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 19:39:16,042 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 19:39:16,044 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 19:39:16,045 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 19:39:16,045 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 19:39:16,047 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label56.c
[2021-12-06 19:39:16,096 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/data/a1547ba32/eb90109f51f948929e4b497aa8a2081e/FLAG20fa5b95d
[2021-12-06 19:39:17,550 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 19:39:17,550 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/sv-benchmarks/c/eca-rers2012/Problem07_label56.c
[2021-12-06 19:39:17,685 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/data/a1547ba32/eb90109f51f948929e4b497aa8a2081e/FLAG20fa5b95d
[2021-12-06 19:39:18,124 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/data/a1547ba32/eb90109f51f948929e4b497aa8a2081e
[2021-12-06 19:39:18,126 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 19:39:18,127 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 19:39:18,127 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 19:39:18,128 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 19:39:18,134 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 19:39:18,135 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:39:18" (1/1) ...
[2021-12-06 19:39:18,135 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bfd8252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:18, skipping insertion in model container
[2021-12-06 19:39:18,135 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:39:18" (1/1) ...
[2021-12-06 19:39:18,140 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 19:39:18,729 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 19:39:28,486 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_4ed8454d-7e96-470e-bf73-51abb6e24361/sv-benchmarks/c/eca-rers2012/Problem07_label56.c[2773929,2773942]
[2021-12-06 19:39:28,545 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:39:28,552 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 19:39:34,480 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_4ed8454d-7e96-470e-bf73-51abb6e24361/sv-benchmarks/c/eca-rers2012/Problem07_label56.c[2773929,2773942]
[2021-12-06 19:39:34,486 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:39:35,135 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 19:39:35,135 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35 WrapperNode
[2021-12-06 19:39:35,135 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 19:39:35,136 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 19:39:35,136 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 19:39:35,136 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 19:39:35,141 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:35,446 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:36,671 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 19:39:36,671 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 19:39:36,672 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 19:39:36,672 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 19:39:36,672 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 19:39:36,679 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:36,679 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:36,906 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:36,907 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:37,390 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:37,498 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:37,628 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:37,936 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 19:39:37,937 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 19:39:37,937 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 19:39:37,937 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 19:39:37,938 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (1/1) ...
[2021-12-06 19:39:37,945 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:39:37,953 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 19:39:37,963 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 19:39:37,968 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ed8454d-7e96-470e-bf73-51abb6e24361/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 19:39:37,997 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 19:39:37,997 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 19:39:37,997 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 19:39:37,997 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 19:39:38,198 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 19:39:38,199 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 19:40:01,682 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 19:40:01,731 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 19:40:01,731 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 19:40:01,740 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:40:01 BoogieIcfgContainer
[2021-12-06 19:40:01,740 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 19:40:01,741 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 19:40:01,741 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 19:40:01,743 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 19:40:01,744 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:39:18" (1/3) ...
[2021-12-06 19:40:01,744 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f81e82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:40:01, skipping insertion in model container
[2021-12-06 19:40:01,744 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:35" (2/3) ...
[2021-12-06 19:40:01,744 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f81e82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:40:01, skipping insertion in model container
[2021-12-06 19:40:01,745 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:40:01" (3/3) ...
[2021-12-06 19:40:01,745 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label56.c
[2021-12-06 19:40:01,749 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 19:40:01,749 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 19:40:01,806 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 19:40:01,812 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 19:40:01,812 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 19:40:01,930 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 19:40:02,515 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10129
[2021-12-06 19:40:02,516 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:40:02,521 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 19:40:02,524 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:40:02,540 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:40:02,545 INFO  L85        PathProgramCache]: Analyzing trace with hash 750210114, now seen corresponding path program 1 times
[2021-12-06 19:40:02,551 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:40:02,551 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715624857]
[2021-12-06 19:40:02,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:40:02,555 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:40:04,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:40:25,093 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 19:40:25,093 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:40:25,094 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715624857]
[2021-12-06 19:40:25,094 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715624857] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:40:25,094 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:40:25,096 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-06 19:40:25,097 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508618226]
[2021-12-06 19:40:25,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:40:25,109 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-12-06 19:40:25,110 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:40:25,131 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-12-06 19:40:25,131 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-12-06 19:40:25,156 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 5 states, 5 states have (on average 2025.6) internal successors, (10128), 4 states have internal predecessors, (10128), 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 19:41:25,768 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:41:25,768 INFO  L93              Difference]: Finished difference Result 51091 states and 101806 transitions.
[2021-12-06 19:41:25,769 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-12-06 19:41:25,773 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2025.6) internal successors, (10128), 4 states have internal predecessors, (10128), 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 10128
[2021-12-06 19:41:25,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:41:25,967 INFO  L225             Difference]: With dead ends: 51091
[2021-12-06 19:41:25,967 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 19:41:25,984 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-12-06 19:41:25,987 INFO  L933         BasicCegarLoop]: 1728 mSDtfsCounter, 42236 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 79547 mSolverCounterSat, 34759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42236 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 114306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 34759 IncrementalHoareTripleChecker+Valid, 79547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.3s IncrementalHoareTripleChecker+Time
[2021-12-06 19:41:25,988 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [42236 Valid, 1939 Invalid, 114306 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [34759 Valid, 79547 Invalid, 0 Unknown, 0 Unchecked, 59.3s Time]
[2021-12-06 19:41:26,042 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 19:41:26,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 19:41:26,625 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.4563206829723032) internal successors, (59364), 40763 states have internal predecessors, (59364), 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 19:41:26,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 59364 transitions.
[2021-12-06 19:41:26,698 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 59364 transitions. Word has length 10128
[2021-12-06 19:41:26,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:41:26,727 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 59364 transitions.
[2021-12-06 19:41:26,729 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2025.6) internal successors, (10128), 4 states have internal predecessors, (10128), 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 19:41:26,730 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 59364 transitions.
[2021-12-06 19:41:27,731 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13028
[2021-12-06 19:41:27,731 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:41:27,740 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, 1, 1, 1, 1]
[2021-12-06 19:41:27,740 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 19:41:27,741 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:41:27,742 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:41:27,745 INFO  L85        PathProgramCache]: Analyzing trace with hash 54958907, now seen corresponding path program 1 times
[2021-12-06 19:41:27,745 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:41:27,745 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404255629]
[2021-12-06 19:41:27,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:41:27,746 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:41:29,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:42:02,041 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 19:42:02,042 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:42:02,042 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404255629]
[2021-12-06 19:42:02,042 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404255629] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:42:02,042 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:42:02,044 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:42:02,044 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847721104]
[2021-12-06 19:42:02,044 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:42:02,061 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:42:02,061 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:42:02,061 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:42:02,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:42:02,065 INFO  L87              Difference]: Start difference. First operand 40764 states and 59364 transitions. Second operand  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 19:42:25,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:42:25,921 INFO  L93              Difference]: Finished difference Result 91716 states and 147487 transitions.
[2021-12-06 19:42:25,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:42:25,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 13027
[2021-12-06 19:42:25,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:42:25,989 INFO  L225             Difference]: With dead ends: 91716
[2021-12-06 19:42:25,989 INFO  L226             Difference]: Without dead ends: 61144
[2021-12-06 19:42:26,010 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 19:42:26,011 INFO  L933         BasicCegarLoop]: 5663 mSDtfsCounter, 10389 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28964 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10389 SdHoareTripleChecker+Valid, 5712 SdHoareTripleChecker+Invalid, 40722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 19:42:26,011 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10389 Valid, 5712 Invalid, 40722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28964 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 19:42:26,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61144 states.
[2021-12-06 19:42:26,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61144 to 61144.
[2021-12-06 19:42:26,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61144 states, 61143 states have (on average 1.4642886348396382) internal successors, (89531), 61143 states have internal predecessors, (89531), 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 19:42:26,792 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61144 states to 61144 states and 89531 transitions.
[2021-12-06 19:42:26,792 INFO  L78                 Accepts]: Start accepts. Automaton has 61144 states and 89531 transitions. Word has length 13027
[2021-12-06 19:42:26,798 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:42:26,798 INFO  L470      AbstractCegarLoop]: Abstraction has 61144 states and 89531 transitions.
[2021-12-06 19:42:26,799 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 19:42:26,800 INFO  L276                IsEmpty]: Start isEmpty. Operand 61144 states and 89531 transitions.
[2021-12-06 19:42:27,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13035
[2021-12-06 19:42:27,832 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:42:27,839 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 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[2021-12-06 19:42:27,839 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 19:42:27,839 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:42:27,840 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:42:27,843 INFO  L85        PathProgramCache]: Analyzing trace with hash 302542204, now seen corresponding path program 1 times
[2021-12-06 19:42:27,843 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:42:27,844 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048928766]
[2021-12-06 19:42:27,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:42:27,845 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:42:29,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:43:00,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 2905 backedges. 2895 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-12-06 19:43:00,141 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:43:00,141 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048928766]
[2021-12-06 19:43:00,141 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048928766] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:43:00,141 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:43:00,143 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:43:00,143 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600440114]
[2021-12-06 19:43:00,143 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:43:00,153 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:43:00,153 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:43:00,153 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:43:00,153 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:43:00,156 INFO  L87              Difference]: Start difference. First operand 61144 states and 89531 transitions. Second operand  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 19:43:23,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:43:23,896 INFO  L93              Difference]: Finished difference Result 152856 states and 237988 transitions.
[2021-12-06 19:43:23,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:43:23,898 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 13034
[2021-12-06 19:43:23,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:43:24,130 INFO  L225             Difference]: With dead ends: 152856
[2021-12-06 19:43:24,130 INFO  L226             Difference]: Without dead ends: 101904
[2021-12-06 19:43:24,152 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 19:43:24,153 INFO  L933         BasicCegarLoop]: 6911 mSDtfsCounter, 9140 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30342 mSolverCounterSat, 11076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9140 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 41418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11076 IncrementalHoareTripleChecker+Valid, 30342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:43:24,154 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9140 Valid, 6960 Invalid, 41418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11076 Valid, 30342 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-06 19:43:24,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101904 states.
[2021-12-06 19:43:24,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101904 to 101904.
[2021-12-06 19:43:25,070 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 101904 states, 101903 states have (on average 1.4265036358105256) internal successors, (145365), 101903 states have internal predecessors, (145365), 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 19:43:25,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101904 states to 101904 states and 145365 transitions.
[2021-12-06 19:43:25,201 INFO  L78                 Accepts]: Start accepts. Automaton has 101904 states and 145365 transitions. Word has length 13034
[2021-12-06 19:43:25,205 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:43:25,205 INFO  L470      AbstractCegarLoop]: Abstraction has 101904 states and 145365 transitions.
[2021-12-06 19:43:25,206 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 19:43:25,206 INFO  L276                IsEmpty]: Start isEmpty. Operand 101904 states and 145365 transitions.
[2021-12-06 19:43:26,369 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13041
[2021-12-06 19:43:26,369 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:43:26,376 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:43:26,376 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 19:43:26,376 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:43:26,377 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:43:26,379 INFO  L85        PathProgramCache]: Analyzing trace with hash -1964370963, now seen corresponding path program 1 times
[2021-12-06 19:43:26,380 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:43:26,380 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630639117]
[2021-12-06 19:43:26,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:43:26,381 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:43:27,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:43:59,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 2917 backedges. 2901 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-12-06 19:43:59,221 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:43:59,222 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630639117]
[2021-12-06 19:43:59,222 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630639117] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:43:59,222 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:43:59,224 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:43:59,224 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260162141]
[2021-12-06 19:43:59,224 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:43:59,232 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:43:59,232 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:43:59,233 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:43:59,233 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:43:59,235 INFO  L87              Difference]: Start difference. First operand 101904 states and 145365 transitions. Second operand  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 19:44:23,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:44:23,141 INFO  L93              Difference]: Finished difference Result 275136 states and 405490 transitions.
[2021-12-06 19:44:23,141 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:44:23,143 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 19:44:23,144 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:44:23,296 INFO  L225             Difference]: With dead ends: 275136
[2021-12-06 19:44:23,296 INFO  L226             Difference]: Without dead ends: 183424
[2021-12-06 19:44:23,332 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 19:44:23,333 INFO  L933         BasicCegarLoop]: 6660 mSDtfsCounter, 9257 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30088 mSolverCounterSat, 11039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9257 SdHoareTripleChecker+Valid, 6709 SdHoareTripleChecker+Invalid, 41127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11039 IncrementalHoareTripleChecker+Valid, 30088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time
[2021-12-06 19:44:23,334 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9257 Valid, 6709 Invalid, 41127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11039 Valid, 30088 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2021-12-06 19:44:23,431 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183424 states.
[2021-12-06 19:44:24,854 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183424 to 183424.
[2021-12-06 19:44:24,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 183424 states, 183423 states have (on average 1.3566619235319453) internal successors, (248843), 183423 states have internal predecessors, (248843), 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 19:44:25,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 183424 states to 183424 states and 248843 transitions.
[2021-12-06 19:44:25,181 INFO  L78                 Accepts]: Start accepts. Automaton has 183424 states and 248843 transitions. Word has length 13040
[2021-12-06 19:44:25,183 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:44:25,184 INFO  L470      AbstractCegarLoop]: Abstraction has 183424 states and 248843 transitions.
[2021-12-06 19:44:25,185 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 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 19:44:25,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 183424 states and 248843 transitions.
[2021-12-06 19:44:26,432 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13051
[2021-12-06 19:44:26,432 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:44:26,438 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1]
[2021-12-06 19:44:26,438 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 19:44:26,438 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:44:26,439 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:44:26,442 INFO  L85        PathProgramCache]: Analyzing trace with hash 367496738, now seen corresponding path program 1 times
[2021-12-06 19:44:26,442 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:44:26,442 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411575057]
[2021-12-06 19:44:26,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:44:26,443 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:44:27,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:44:57,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 2934 backedges. 2908 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-12-06 19:44:57,156 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:44:57,156 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411575057]
[2021-12-06 19:44:57,156 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411575057] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:44:57,156 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:44:57,158 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:44:57,158 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991322231]
[2021-12-06 19:44:57,159 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:44:57,167 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:44:57,167 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:44:57,168 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:44:57,168 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:44:57,170 INFO  L87              Difference]: Start difference. First operand 183424 states and 248843 transitions. Second operand  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 19:45:21,841 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:45:21,841 INFO  L93              Difference]: Finished difference Result 519696 states and 715924 transitions.
[2021-12-06 19:45:21,841 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:45:21,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 13050
[2021-12-06 19:45:21,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:45:22,174 INFO  L225             Difference]: With dead ends: 519696
[2021-12-06 19:45:22,174 INFO  L226             Difference]: Without dead ends: 346464
[2021-12-06 19:45:22,247 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 19:45:22,248 INFO  L933         BasicCegarLoop]: 5668 mSDtfsCounter, 10907 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27434 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10907 SdHoareTripleChecker+Valid, 5717 SdHoareTripleChecker+Invalid, 40464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 19:45:22,248 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10907 Valid, 5717 Invalid, 40464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27434 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 19:45:22,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 346464 states.
[2021-12-06 19:45:25,198 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 346464 to 346464.
[2021-12-06 19:45:25,414 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 346464 states, 346463 states have (on average 1.2699451312261338) internal successors, (439989), 346463 states have internal predecessors, (439989), 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 19:45:26,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 346464 states to 346464 states and 439989 transitions.
[2021-12-06 19:45:26,047 INFO  L78                 Accepts]: Start accepts. Automaton has 346464 states and 439989 transitions. Word has length 13050
[2021-12-06 19:45:26,049 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:45:26,049 INFO  L470      AbstractCegarLoop]: Abstraction has 346464 states and 439989 transitions.
[2021-12-06 19:45:26,050 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 19:45:26,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 346464 states and 439989 transitions.
[2021-12-06 19:45:27,438 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13086
[2021-12-06 19:45:27,439 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:45:27,441 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:45:27,441 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 19:45:27,441 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:45:27,442 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:45:27,443 INFO  L85        PathProgramCache]: Analyzing trace with hash -1471460534, now seen corresponding path program 1 times
[2021-12-06 19:45:27,443 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:45:27,443 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676147405]
[2021-12-06 19:45:27,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:45:27,444 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:45:28,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:45:57,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 3004 backedges. 2943 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2021-12-06 19:45:57,309 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:45:57,309 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676147405]
[2021-12-06 19:45:57,309 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676147405] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:45:57,309 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:45:57,311 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:45:57,311 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267331631]
[2021-12-06 19:45:57,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:45:57,316 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:45:57,316 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:45:57,317 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:45:57,317 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:45:57,319 INFO  L87              Difference]: Start difference. First operand 346464 states and 439989 transitions. Second operand  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 19:46:23,245 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:46:23,245 INFO  L93              Difference]: Finished difference Result 1008816 states and 1289362 transitions.
[2021-12-06 19:46:23,246 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:46:23,247 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 13085
[2021-12-06 19:46:23,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:46:23,935 INFO  L225             Difference]: With dead ends: 1008816
[2021-12-06 19:46:23,935 INFO  L226             Difference]: Without dead ends: 672544
[2021-12-06 19:46:24,061 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 19:46:24,062 INFO  L933         BasicCegarLoop]: 7708 mSDtfsCounter, 8866 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29794 mSolverCounterSat, 11670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8866 SdHoareTripleChecker+Valid, 7757 SdHoareTripleChecker+Invalid, 41464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11670 IncrementalHoareTripleChecker+Valid, 29794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 19:46:24,062 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8866 Valid, 7757 Invalid, 41464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11670 Valid, 29794 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 19:46:24,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 672544 states.
[2021-12-06 19:46:30,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 672544 to 672544.
[2021-12-06 19:46:30,352 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 672544 states, 672543 states have (on average 1.2114214258419165) internal successors, (814733), 672543 states have internal predecessors, (814733), 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 19:46:31,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 672544 states to 672544 states and 814733 transitions.
[2021-12-06 19:46:31,364 INFO  L78                 Accepts]: Start accepts. Automaton has 672544 states and 814733 transitions. Word has length 13085
[2021-12-06 19:46:31,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:46:31,366 INFO  L470      AbstractCegarLoop]: Abstraction has 672544 states and 814733 transitions.
[2021-12-06 19:46:31,367 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4341.666666666667) internal successors, (13025), 2 states have internal predecessors, (13025), 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 19:46:31,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 672544 states and 814733 transitions.
[2021-12-06 19:46:33,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13178
[2021-12-06 19:46:33,216 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:46:33,218 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2021-12-06 19:46:33,218 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 19:46:33,218 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:46:33,219 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:46:33,220 INFO  L85        PathProgramCache]: Analyzing trace with hash -155716586, now seen corresponding path program 1 times
[2021-12-06 19:46:33,220 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:46:33,220 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125070360]
[2021-12-06 19:46:33,221 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:46:33,221 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:46:34,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:47:04,443 INFO  L134       CoverageAnalysis]: Checked inductivity of 3191 backedges. 3187 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-12-06 19:47:04,443 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:47:04,443 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125070360]
[2021-12-06 19:47:04,443 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125070360] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:47:04,443 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:47:04,445 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 19:47:04,445 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599003127]
[2021-12-06 19:47:04,445 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:47:04,451 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:47:04,451 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:47:04,451 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:47:04,451 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:47:04,454 INFO  L87              Difference]: Start difference. First operand 672544 states and 814733 transitions. Second operand  has 3 states, 3 states have (on average 4391.333333333333) internal successors, (13174), 3 states have internal predecessors, (13174), 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 19:47:32,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:47:32,677 INFO  L93              Difference]: Finished difference Result 1987056 states and 2413594 transitions.
[2021-12-06 19:47:32,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:47:32,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4391.333333333333) internal successors, (13174), 3 states have internal predecessors, (13174), 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 13177
[2021-12-06 19:47:32,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:47:34,230 INFO  L225             Difference]: With dead ends: 1987056
[2021-12-06 19:47:34,230 INFO  L226             Difference]: Without dead ends: 1324704
[2021-12-06 19:47:34,457 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 19:47:34,457 INFO  L933         BasicCegarLoop]: 7243 mSDtfsCounter, 11140 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33028 mSolverCounterSat, 8847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11140 SdHoareTripleChecker+Valid, 7292 SdHoareTripleChecker+Invalid, 41875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8847 IncrementalHoareTripleChecker+Valid, 33028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 19:47:34,458 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11140 Valid, 7292 Invalid, 41875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8847 Valid, 33028 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 19:47:35,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1324704 states.
[2021-12-06 19:47:46,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324704 to 1324704.
[2021-12-06 19:47:47,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1324704 states, 1324703 states have (on average 1.1643809970989725) internal successors, (1542459), 1324703 states have internal predecessors, (1542459), 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 19:47:49,257 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1324704 states to 1324704 states and 1542459 transitions.
[2021-12-06 19:47:49,257 INFO  L78                 Accepts]: Start accepts. Automaton has 1324704 states and 1542459 transitions. Word has length 13177
[2021-12-06 19:47:49,258 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:47:49,259 INFO  L470      AbstractCegarLoop]: Abstraction has 1324704 states and 1542459 transitions.
[2021-12-06 19:47:49,260 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4391.333333333333) internal successors, (13174), 3 states have internal predecessors, (13174), 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 19:47:49,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 1324704 states and 1542459 transitions.
[2021-12-06 19:47:51,831 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13199
[2021-12-06 19:47:51,831 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:47:51,833 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:47:51,834 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 19:47:51,834 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:47:51,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:47:51,836 INFO  L85        PathProgramCache]: Analyzing trace with hash -1047611340, now seen corresponding path program 1 times
[2021-12-06 19:47:51,836 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:47:51,836 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071029700]
[2021-12-06 19:47:51,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:47:51,837 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:47:53,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:48:22,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 3257 backedges. 3099 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked.
[2021-12-06 19:48:22,945 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:48:22,945 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071029700]
[2021-12-06 19:48:22,945 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071029700] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:48:22,945 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:48:22,947 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 19:48:22,947 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716992129]
[2021-12-06 19:48:22,947 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:48:22,953 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-06 19:48:22,953 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:48:22,953 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-06 19:48:22,953 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-06 19:48:22,956 INFO  L87              Difference]: Start difference. First operand 1324704 states and 1542459 transitions. Second operand  has 4 states, 4 states have (on average 3261.5) internal successors, (13046), 3 states have internal predecessors, (13046), 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)