./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4_false-unreach-call_true-termination.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 635dfa2a
Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 66fc6b12b7cd24de7373fe06aeeb5aec1e7e0e8b
........................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.1.23-635dfa2
[2018-12-02 07:26:18,199 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-12-02 07:26:18,200 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-12-02 07:26:18,207 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-12-02 07:26:18,207 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-12-02 07:26:18,208 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-12-02 07:26:18,209 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-12-02 07:26:18,210 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-12-02 07:26:18,211 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-12-02 07:26:18,212 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-12-02 07:26:18,212 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-12-02 07:26:18,213 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-12-02 07:26:18,213 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-12-02 07:26:18,214 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-12-02 07:26:18,215 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-12-02 07:26:18,215 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-12-02 07:26:18,216 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-12-02 07:26:18,217 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-12-02 07:26:18,218 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-12-02 07:26:18,219 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-12-02 07:26:18,220 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-12-02 07:26:18,221 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-12-02 07:26:18,222 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-12-02 07:26:18,223 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-12-02 07:26:18,223 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-12-02 07:26:18,223 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-12-02 07:26:18,224 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-12-02 07:26:18,224 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-12-02 07:26:18,225 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-12-02 07:26:18,226 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-12-02 07:26:18,226 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-12-02 07:26:18,226 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-12-02 07:26:18,226 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-12-02 07:26:18,227 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-12-02 07:26:18,227 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-12-02 07:26:18,228 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-12-02 07:26:18,228 INFO  L98         SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2018-12-02 07:26:18,237 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-12-02 07:26:18,237 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-12-02 07:26:18,238 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-12-02 07:26:18,238 INFO  L133        SettingsManager]:  * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS
[2018-12-02 07:26:18,238 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-12-02 07:26:18,238 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-12-02 07:26:18,239 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-12-02 07:26:18,239 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-12-02 07:26:18,239 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-12-02 07:26:18,239 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-12-02 07:26:18,239 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-12-02 07:26:18,239 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-12-02 07:26:18,239 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * Use constant arrays=true
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-12-02 07:26:18,240 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-12-02 07:26:18,240 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-12-02 07:26:18,241 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-12-02 07:26:18,241 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-12-02 07:26:18,241 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-12-02 07:26:18,241 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-12-02 07:26:18,241 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-12-02 07:26:18,241 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-12-02 07:26:18,241 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-12-02 07:26:18,242 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-12-02 07:26:18,242 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-12-02 07:26:18,242 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
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-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer
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(__VERIFIER_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 -> 66fc6b12b7cd24de7373fe06aeeb5aec1e7e0e8b
[2018-12-02 07:26:18,265 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-12-02 07:26:18,272 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-12-02 07:26:18,274 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-12-02 07:26:18,275 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-12-02 07:26:18,276 INFO  L276        PluginConnector]: CDTParser initialized
[2018-12-02 07:26:18,276 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_4_false-unreach-call_true-termination.i
[2018-12-02 07:26:18,320 INFO  L221              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/data/e2a3d2fdb/75db144b6fe14141be0910d22bd60317/FLAG7d1ac5797
[2018-12-02 07:26:18,762 INFO  L307              CDTParser]: Found 1 translation units.
[2018-12-02 07:26:18,762 INFO  L161              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/sv-benchmarks/c/loops/while_infinite_loop_4_false-unreach-call_true-termination.i
[2018-12-02 07:26:18,765 INFO  L355              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/data/e2a3d2fdb/75db144b6fe14141be0910d22bd60317/FLAG7d1ac5797
[2018-12-02 07:26:18,773 INFO  L363              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/data/e2a3d2fdb/75db144b6fe14141be0910d22bd60317
[2018-12-02 07:26:18,775 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-12-02 07:26:18,775 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2018-12-02 07:26:18,776 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-12-02 07:26:18,776 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-12-02 07:26:18,778 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-12-02 07:26:18,778 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,780 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18, skipping insertion in model container
[2018-12-02 07:26:18,780 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,785 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-12-02 07:26:18,797 INFO  L176         MainTranslator]: Built tables and reachable declarations
[2018-12-02 07:26:18,884 INFO  L203          PostProcessor]: Analyzing one entry point: main
[2018-12-02 07:26:18,887 INFO  L191         MainTranslator]: Completed pre-run
[2018-12-02 07:26:18,895 INFO  L203          PostProcessor]: Analyzing one entry point: main
[2018-12-02 07:26:18,903 INFO  L195         MainTranslator]: Completed translation
[2018-12-02 07:26:18,903 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18 WrapperNode
[2018-12-02 07:26:18,903 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-12-02 07:26:18,903 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-12-02 07:26:18,903 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-12-02 07:26:18,904 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-12-02 07:26:18,910 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,914 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,919 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-12-02 07:26:18,920 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-12-02 07:26:18,920 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-12-02 07:26:18,920 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-12-02 07:26:18,926 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,926 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,926 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,926 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,928 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,931 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,931 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
[2018-12-02 07:26:18,932 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-12-02 07:26:18,932 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-12-02 07:26:18,932 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-12-02 07:26:18,932 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-12-02 07:26:18,933 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-12-02 07:26:18,999 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-12-02 07:26:18,999 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-12-02 07:26:18,999 INFO  L130     BoogieDeclarations]: Found specification of procedure eval
[2018-12-02 07:26:19,000 INFO  L138     BoogieDeclarations]: Found implementation of procedure eval
[2018-12-02 07:26:19,000 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-12-02 07:26:19,000 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-12-02 07:26:19,000 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-12-02 07:26:19,000 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-12-02 07:26:19,000 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2018-12-02 07:26:19,000 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2018-12-02 07:26:19,068 INFO  L275             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-12-02 07:26:19,068 INFO  L280             CfgBuilder]: Removed 2 assue(true) statements.
[2018-12-02 07:26:19,068 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:19 BoogieIcfgContainer
[2018-12-02 07:26:19,068 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-12-02 07:26:19,068 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-12-02 07:26:19,069 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-12-02 07:26:19,070 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-12-02 07:26:19,070 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:26:18" (1/3) ...
[2018-12-02 07:26:19,071 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcaa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:19, skipping insertion in model container
[2018-12-02 07:26:19,071 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:18" (2/3) ...
[2018-12-02 07:26:19,071 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcaa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:19, skipping insertion in model container
[2018-12-02 07:26:19,071 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:19" (3/3) ...
[2018-12-02 07:26:19,072 INFO  L112   eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4_false-unreach-call_true-termination.i
[2018-12-02 07:26:19,078 INFO  L156   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-12-02 07:26:19,082 INFO  L168   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-12-02 07:26:19,092 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-12-02 07:26:19,109 INFO  L133   ementStrategyFactory]: Using default assertion order modulation
[2018-12-02 07:26:19,110 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-12-02 07:26:19,110 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-12-02 07:26:19,110 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-12-02 07:26:19,110 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-12-02 07:26:19,110 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-12-02 07:26:19,110 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-12-02 07:26:19,110 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-12-02 07:26:19,110 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-12-02 07:26:19,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states.
[2018-12-02 07:26:19,124 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2018-12-02 07:26:19,125 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 07:26:19,125 INFO  L402         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 07:26:19,127 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 07:26:19,130 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 07:26:19,130 INFO  L82        PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times
[2018-12-02 07:26:19,131 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 07:26:19,131 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 07:26:19,160 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 07:26:19,160 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 07:26:19,160 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 07:26:19,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-02 07:26:19,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-02 07:26:19,197 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-12-02 07:26:19,197 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-12-02 07:26:19,199 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-12-02 07:26:19,207 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-12-02 07:26:19,207 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-12-02 07:26:19,208 INFO  L87              Difference]: Start difference. First operand 23 states. Second operand 2 states.
[2018-12-02 07:26:19,221 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-02 07:26:19,221 INFO  L93              Difference]: Finished difference Result 35 states and 47 transitions.
[2018-12-02 07:26:19,221 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-12-02 07:26:19,222 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2018-12-02 07:26:19,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-12-02 07:26:19,227 INFO  L225             Difference]: With dead ends: 35
[2018-12-02 07:26:19,227 INFO  L226             Difference]: Without dead ends: 17
[2018-12-02 07:26:19,229 INFO  L631         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-12-02 07:26:19,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2018-12-02 07:26:19,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2018-12-02 07:26:19,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2018-12-02 07:26:19,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2018-12-02 07:26:19,249 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10
[2018-12-02 07:26:19,249 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-12-02 07:26:19,249 INFO  L480      AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2018-12-02 07:26:19,250 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-12-02 07:26:19,250 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2018-12-02 07:26:19,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2018-12-02 07:26:19,250 INFO  L394         BasicCegarLoop]: Found error trace
[2018-12-02 07:26:19,250 INFO  L402         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-12-02 07:26:19,250 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-12-02 07:26:19,251 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-02 07:26:19,251 INFO  L82        PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times
[2018-12-02 07:26:19,251 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-02 07:26:19,251 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-02 07:26:19,251 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 07:26:19,252 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-02 07:26:19,252 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-02 07:26:19,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-02 07:26:19,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-02 07:26:19,275 INFO  L469         BasicCegarLoop]: Counterexample might be feasible
[2018-12-02 07:26:19,289 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:26:19 BoogieIcfgContainer
[2018-12-02 07:26:19,289 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-12-02 07:26:19,290 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2018-12-02 07:26:19,290 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2018-12-02 07:26:19,290 INFO  L276        PluginConnector]: Witness Printer initialized
[2018-12-02 07:26:19,290 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:19" (3/4) ...
[2018-12-02 07:26:19,292 INFO  L138         WitnessPrinter]: Generating witness for reachability counterexample
[2018-12-02 07:26:19,315 INFO  L145         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_56f29365-303c-4967-ac12-889e2be31566/bin-2019/uautomizer/witness.graphml
[2018-12-02 07:26:19,315 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2018-12-02 07:26:19,316 INFO  L168              Benchmark]: Toolchain (without parser) took 540.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -124.1 MB). There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,317 INFO  L168              Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,317 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 127.35 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,317 INFO  L168              Benchmark]: Boogie Procedure Inliner took 16.05 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,317 INFO  L168              Benchmark]: Boogie Preprocessor took 12.57 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,317 INFO  L168              Benchmark]: RCFGBuilder took 135.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,318 INFO  L168              Benchmark]: TraceAbstraction took 220.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,318 INFO  L168              Benchmark]: Witness Printer took 25.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-02 07:26:19,320 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 127.35 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB.
 * Boogie Procedure Inliner took 16.05 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 12.57 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * RCFGBuilder took 135.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB.
 * TraceAbstraction took 220.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB.
 * Witness Printer took 25.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L10]             int x=0;
       VAL        [\old(x)=2, x=0]
[L24]  COND TRUE  1
       VAL        [\old(x)=0, x=0]
[L26]  CALL       eval()
       VAL        [\old(x)=0, x=0]
[L14]  COND TRUE  1
[L15]             x=1
       VAL        [\old(x)=0, x=1]
[L26]  RET        eval()
       VAL        [\old(x)=0, x=1]
[L27]  CALL       __VERIFIER_assert(x==0)
       VAL        [\old(cond)=0, \old(x)=0, x=1]
[L4]   COND TRUE  !(cond)
       VAL        [\old(cond)=0, \old(x)=0, cond=0, x=1]
[L5]              __VERIFIER_error()
       VAL        [\old(cond)=0, \old(x)=0, cond=0, x=1]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...