./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 4e77c044
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt --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 91f380cc586fc37a21f02c3c45ccd402d5300ed9
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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 0.2.1-dev-4e77c04
[2021-10-13 00:08:14,224 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-13 00:08:14,226 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-13 00:08:14,261 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-13 00:08:14,262 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-13 00:08:14,263 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-13 00:08:14,265 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-13 00:08:14,267 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-13 00:08:14,270 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-13 00:08:14,271 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-13 00:08:14,272 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-13 00:08:14,274 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-13 00:08:14,275 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-13 00:08:14,276 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-13 00:08:14,278 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-13 00:08:14,279 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-13 00:08:14,281 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-13 00:08:14,282 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-13 00:08:14,284 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-13 00:08:14,287 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-13 00:08:14,289 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-13 00:08:14,291 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-13 00:08:14,293 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-13 00:08:14,294 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-13 00:08:14,298 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-13 00:08:14,299 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-13 00:08:14,299 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-13 00:08:14,301 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-13 00:08:14,301 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-13 00:08:14,303 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-13 00:08:14,303 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-13 00:08:14,304 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-13 00:08:14,305 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-13 00:08:14,306 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-13 00:08:14,307 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-13 00:08:14,308 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-13 00:08:14,309 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-13 00:08:14,309 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-13 00:08:14,309 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-13 00:08:14,310 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-13 00:08:14,311 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-13 00:08:14,312 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-13 00:08:14,348 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-13 00:08:14,353 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-13 00:08:14,354 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-13 00:08:14,355 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-13 00:08:14,357 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-13 00:08:14,357 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-13 00:08:14,357 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-13 00:08:14,358 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-13 00:08:14,358 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-13 00:08:14,358 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-13 00:08:14,360 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-13 00:08:14,360 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-13 00:08:14,360 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-13 00:08:14,361 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-13 00:08:14,361 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-13 00:08:14,361 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-13 00:08:14,361 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-13 00:08:14,362 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-13 00:08:14,362 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-13 00:08:14,362 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-13 00:08:14,362 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-13 00:08:14,363 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-13 00:08:14,363 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-13 00:08:14,363 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-13 00:08:14,364 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-13 00:08:14,364 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-13 00:08:14,364 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-13 00:08:14,364 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-13 00:08:14,365 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-13 00:08:14,366 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-13 00:08:14,367 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_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/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_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt
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 -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9
[2021-10-13 00:08:14,681 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-13 00:08:14,705 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-13 00:08:14,708 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-13 00:08:14,710 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-13 00:08:14,711 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-13 00:08:14,712 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c
[2021-10-13 00:08:14,808 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/data/192b9f32c/380100af83e444a5a47e75911177ffff/FLAG483dcfaf3
[2021-10-13 00:08:15,332 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-13 00:08:15,332 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c
[2021-10-13 00:08:15,339 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/data/192b9f32c/380100af83e444a5a47e75911177ffff/FLAG483dcfaf3
[2021-10-13 00:08:15,786 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/data/192b9f32c/380100af83e444a5a47e75911177ffff
[2021-10-13 00:08:15,789 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-13 00:08:15,790 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-13 00:08:15,800 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-13 00:08:15,801 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-13 00:08:15,806 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-13 00:08:15,807 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:08:15" (1/1) ...
[2021-10-13 00:08:15,808 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359dbac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:15, skipping insertion in model container
[2021-10-13 00:08:15,809 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:08:15" (1/1) ...
[2021-10-13 00:08:15,815 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-13 00:08:15,832 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-13 00:08:15,989 WARN  L228   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_315c9346-93db-40bd-975a-624370660c93/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471]
[2021-10-13 00:08:16,005 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-13 00:08:16,014 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-13 00:08:16,026 WARN  L228   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_315c9346-93db-40bd-975a-624370660c93/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471]
[2021-10-13 00:08:16,034 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-13 00:08:16,047 INFO  L208         MainTranslator]: Completed translation
[2021-10-13 00:08:16,047 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16 WrapperNode
[2021-10-13 00:08:16,047 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-13 00:08:16,048 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-13 00:08:16,048 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-13 00:08:16,048 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-13 00:08:16,056 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,062 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,092 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-13 00:08:16,093 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-13 00:08:16,094 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-13 00:08:16,094 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-13 00:08:16,102 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,102 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,114 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,115 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,120 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,127 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,129 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,135 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-13 00:08:16,137 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-13 00:08:16,138 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-13 00:08:16,138 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-13 00:08:16,139 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (1/1) ...
[2021-10-13 00:08:16,147 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-13 00:08:16,160 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3
[2021-10-13 00:08:16,177 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-13 00:08:16,213 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-13 00:08:16,231 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-13 00:08:16,232 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-13 00:08:16,233 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-13 00:08:16,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-13 00:08:16,495 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-13 00:08:16,495 INFO  L299             CfgBuilder]: Removed 13 assume(true) statements.
[2021-10-13 00:08:16,497 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:08:16 BoogieIcfgContainer
[2021-10-13 00:08:16,497 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-13 00:08:16,499 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-13 00:08:16,499 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-13 00:08:16,509 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-13 00:08:16,509 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:08:15" (1/3) ...
[2021-10-13 00:08:16,510 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4165ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:08:16, skipping insertion in model container
[2021-10-13 00:08:16,510 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:08:16" (2/3) ...
[2021-10-13 00:08:16,511 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4165ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:08:16, skipping insertion in model container
[2021-10-13 00:08:16,511 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:08:16" (3/3) ...
[2021-10-13 00:08:16,512 INFO  L111   eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c
[2021-10-13 00:08:16,518 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-13 00:08:16,518 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2021-10-13 00:08:16,608 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-13 00:08:16,620 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, mConcurrency=FINITE_AUTOMATA, 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
[2021-10-13 00:08:16,623 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2021-10-13 00:08:16,640 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-13 00:08:16,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-10-13 00:08:16,645 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 00:08:16,645 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-13 00:08:16,646 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-13 00:08:16,651 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 00:08:16,652 INFO  L82        PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times
[2021-10-13 00:08:16,661 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-13 00:08:16,662 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557023942]
[2021-10-13 00:08:16,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:16,666 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 00:08:16,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 00:08:16,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 00:08:16,803 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-13 00:08:16,803 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557023942]
[2021-10-13 00:08:16,804 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557023942] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-13 00:08:16,804 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-13 00:08:16,805 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-13 00:08:16,806 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97000178]
[2021-10-13 00:08:16,812 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-13 00:08:16,812 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-13 00:08:16,826 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-13 00:08:16,827 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-13 00:08:16,829 INFO  L87              Difference]: Start difference. First operand  has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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)
[2021-10-13 00:08:16,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 00:08:16,846 INFO  L93              Difference]: Finished difference Result 41 states and 52 transitions.
[2021-10-13 00:08:16,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-13 00:08:16,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8
[2021-10-13 00:08:16,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 00:08:16,856 INFO  L225             Difference]: With dead ends: 41
[2021-10-13 00:08:16,857 INFO  L226             Difference]: Without dead ends: 18
[2021-10-13 00:08:16,859 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-13 00:08:16,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-10-13 00:08:16,890 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-10-13 00:08:16,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 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)
[2021-10-13 00:08:16,892 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2021-10-13 00:08:16,893 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8
[2021-10-13 00:08:16,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 00:08:16,894 INFO  L470      AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2021-10-13 00:08:16,913 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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)
[2021-10-13 00:08:16,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2021-10-13 00:08:16,914 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-10-13 00:08:16,914 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 00:08:16,915 INFO  L512         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-13 00:08:16,915 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-13 00:08:16,915 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-13 00:08:16,916 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 00:08:16,917 INFO  L82        PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times
[2021-10-13 00:08:16,917 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-13 00:08:16,917 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446429912]
[2021-10-13 00:08:16,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:16,918 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 00:08:16,939 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-13 00:08:16,940 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425216090]
[2021-10-13 00:08:16,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:16,940 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:16,941 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3
[2021-10-13 00:08:16,942 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-13 00:08:16,967 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-13 00:08:17,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 00:08:17,027 INFO  L263         TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-10-13 00:08:17,043 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-13 00:08:17,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 00:08:17,213 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-13 00:08:17,214 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446429912]
[2021-10-13 00:08:17,214 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-13 00:08:17,214 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425216090]
[2021-10-13 00:08:17,215 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425216090] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-13 00:08:17,215 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-13 00:08:17,215 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-13 00:08:17,216 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159528147]
[2021-10-13 00:08:17,217 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-13 00:08:17,218 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-13 00:08:17,219 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-13 00:08:17,219 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-13 00:08:17,220 INFO  L87              Difference]: Start difference. First operand 18 states and 19 transitions. Second operand  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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)
[2021-10-13 00:08:17,486 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 00:08:17,486 INFO  L93              Difference]: Finished difference Result 36 states and 39 transitions.
[2021-10-13 00:08:17,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-13 00:08:17,488 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8
[2021-10-13 00:08:17,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 00:08:17,489 INFO  L225             Difference]: With dead ends: 36
[2021-10-13 00:08:17,489 INFO  L226             Difference]: Without dead ends: 25
[2021-10-13 00:08:17,490 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-13 00:08:17,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-10-13 00:08:17,494 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22.
[2021-10-13 00:08:17,495 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 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)
[2021-10-13 00:08:17,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2021-10-13 00:08:17,496 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8
[2021-10-13 00:08:17,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 00:08:17,496 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2021-10-13 00:08:17,497 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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)
[2021-10-13 00:08:17,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2021-10-13 00:08:17,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-10-13 00:08:17,498 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 00:08:17,498 INFO  L512         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-13 00:08:17,534 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-13 00:08:17,698 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:17,699 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-13 00:08:17,700 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 00:08:17,700 INFO  L82        PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times
[2021-10-13 00:08:17,700 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-13 00:08:17,700 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263870587]
[2021-10-13 00:08:17,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:17,701 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 00:08:17,718 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-13 00:08:17,724 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907676070]
[2021-10-13 00:08:17,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:17,726 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:17,727 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3
[2021-10-13 00:08:17,728 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-13 00:08:17,747 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-13 00:08:17,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 00:08:17,802 INFO  L263         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-13 00:08:17,803 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-13 00:08:17,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 00:08:17,903 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-13 00:08:17,903 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263870587]
[2021-10-13 00:08:17,903 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-13 00:08:17,903 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907676070]
[2021-10-13 00:08:17,904 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907676070] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-13 00:08:17,904 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-13 00:08:17,904 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4
[2021-10-13 00:08:17,904 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206608307]
[2021-10-13 00:08:17,905 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-13 00:08:17,905 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-13 00:08:17,906 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-13 00:08:17,906 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-10-13 00:08:17,907 INFO  L87              Difference]: Start difference. First operand 22 states and 23 transitions. Second operand  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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)
[2021-10-13 00:08:17,943 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 00:08:17,943 INFO  L93              Difference]: Finished difference Result 32 states and 33 transitions.
[2021-10-13 00:08:17,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-13 00:08:17,946 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12
[2021-10-13 00:08:17,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 00:08:17,946 INFO  L225             Difference]: With dead ends: 32
[2021-10-13 00:08:17,947 INFO  L226             Difference]: Without dead ends: 18
[2021-10-13 00:08:17,947 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2021-10-13 00:08:17,947 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-10-13 00:08:17,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-10-13 00:08:17,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-13 00:08:17,951 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions.
[2021-10-13 00:08:17,951 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 12
[2021-10-13 00:08:17,951 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 00:08:17,951 INFO  L470      AbstractCegarLoop]: Abstraction has 18 states and 17 transitions.
[2021-10-13 00:08:17,952 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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)
[2021-10-13 00:08:17,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions.
[2021-10-13 00:08:17,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-10-13 00:08:17,953 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 00:08:17,953 INFO  L512         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-13 00:08:17,993 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-13 00:08:18,153 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:18,154 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-13 00:08:18,155 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 00:08:18,155 INFO  L82        PathProgramCache]: Analyzing trace with hash 983954548, now seen corresponding path program 1 times
[2021-10-13 00:08:18,155 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-13 00:08:18,155 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068123853]
[2021-10-13 00:08:18,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:18,156 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 00:08:18,186 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-13 00:08:18,195 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958026278]
[2021-10-13 00:08:18,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:18,195 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:18,196 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3
[2021-10-13 00:08:18,197 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-13 00:08:18,215 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-13 00:08:18,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-13 00:08:18,280 INFO  L263         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-10-13 00:08:18,281 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-13 00:08:18,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-13 00:08:18,507 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-13 00:08:18,508 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068123853]
[2021-10-13 00:08:18,508 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-13 00:08:18,508 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958026278]
[2021-10-13 00:08:18,509 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [958026278] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-13 00:08:18,509 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-13 00:08:18,509 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2021-10-13 00:08:18,509 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822820544]
[2021-10-13 00:08:18,511 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-13 00:08:18,511 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-13 00:08:18,513 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-13 00:08:18,513 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-13 00:08:18,514 INFO  L87              Difference]: Start difference. First operand 18 states and 17 transitions. Second operand  has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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)
[2021-10-13 00:08:18,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-13 00:08:18,569 INFO  L93              Difference]: Finished difference Result 18 states and 17 transitions.
[2021-10-13 00:08:18,570 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-10-13 00:08:18,570 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13
[2021-10-13 00:08:18,571 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-13 00:08:18,571 INFO  L225             Difference]: With dead ends: 18
[2021-10-13 00:08:18,571 INFO  L226             Difference]: Without dead ends: 16
[2021-10-13 00:08:18,572 INFO  L781         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-10-13 00:08:18,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2021-10-13 00:08:18,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2021-10-13 00:08:18,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 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)
[2021-10-13 00:08:18,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions.
[2021-10-13 00:08:18,576 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 13
[2021-10-13 00:08:18,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-13 00:08:18,577 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 15 transitions.
[2021-10-13 00:08:18,577 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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)
[2021-10-13 00:08:18,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions.
[2021-10-13 00:08:18,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-13 00:08:18,578 INFO  L504         BasicCegarLoop]: Found error trace
[2021-10-13 00:08:18,578 INFO  L512         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-13 00:08:18,605 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2021-10-13 00:08:18,802 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2021-10-13 00:08:18,803 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-13 00:08:18,803 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-13 00:08:18,804 INFO  L82        PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times
[2021-10-13 00:08:18,804 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-13 00:08:18,804 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602821995]
[2021-10-13 00:08:18,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:18,804 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-13 00:08:18,826 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-13 00:08:18,826 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280207270]
[2021-10-13 00:08:18,826 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-13 00:08:18,826 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:18,826 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3
[2021-10-13 00:08:18,848 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-13 00:08:18,867 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-13 00:08:18,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-13 00:08:18,915 INFO  L354             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-13 00:08:18,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-13 00:08:18,952 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-13 00:08:18,953 INFO  L626         BasicCegarLoop]: Counterexample is feasible
[2021-10-13 00:08:18,954 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-13 00:08:18,956 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-13 00:08:18,957 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-13 00:08:19,000 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-13 00:08:19,171 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-13 00:08:19,178 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-13 00:08:19,210 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:08:19 BoogieIcfgContainer
[2021-10-13 00:08:19,210 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-13 00:08:19,211 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-13 00:08:19,211 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-13 00:08:19,211 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-13 00:08:19,212 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:08:16" (3/4) ...
[2021-10-13 00:08:19,214 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-13 00:08:19,272 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/witness.graphml
[2021-10-13 00:08:19,272 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-13 00:08:19,274 INFO  L168              Benchmark]: Toolchain (without parser) took 3482.35 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 55.8 MB in the beginning and 86.7 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,275 INFO  L168              Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,275 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 247.21 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 66.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,276 INFO  L168              Benchmark]: Boogie Procedure Inliner took 44.53 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 64.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,277 INFO  L168              Benchmark]: Boogie Preprocessor took 43.23 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 63.9 MB in the end (delta: 823.6 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,278 INFO  L168              Benchmark]: RCFGBuilder took 359.88 ms. Allocated memory is still 90.2 MB. Free memory was 63.9 MB in the beginning and 54.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,278 INFO  L168              Benchmark]: TraceAbstraction took 2711.71 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 53.6 MB in the beginning and 88.8 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,279 INFO  L168              Benchmark]: Witness Printer took 61.57 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-13 00:08:19,283 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 247.21 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 66.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 44.53 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 64.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 43.23 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 63.9 MB in the end (delta: 823.6 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * RCFGBuilder took 359.88 ms. Allocated memory is still 90.2 MB. Free memory was 63.9 MB in the beginning and 54.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 2711.71 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 53.6 MB in the beginning and 88.8 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Witness Printer took 61.57 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 12]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L17]              int counter = 0;
       VAL         [counter=0]
[L19]              short k;
[L20]              long long y, x, c;
[L21]              k = __VERIFIER_nondet_short()
[L7]   COND FALSE  !(!cond)
       VAL         [counter=0]
[L24]              y = 0
[L25]              x = 0
[L26]              c = 0
       VAL         [counter=0]
[L28]  EXPR        counter++
       VAL         [counter=1]
[L28]  COND TRUE   counter++<1
[L10]  COND FALSE  !(!(cond))
       VAL         [counter=1]
[L31]  COND FALSE  !(!(c < k))
[L34]              c = c + 1
[L35]              y = y + 1
[L36]              x = y * y * y * y * y + x
       VAL         [counter=1]
[L28]  EXPR        counter++
       VAL         [counter=2]
[L28]  COND FALSE  !(counter++<1)
[L10]  COND FALSE  !(!(cond))
       VAL         [counter=2]
[L10]  COND TRUE   !(cond)
       VAL         [counter=2]
[L12]              reach_error()
       VAL         [counter=2]

  - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2575.9ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 10.6ms, AutomataDifference: 421.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 28 SDslu, 54 SDs, 0 SdLazy, 45 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 261.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 80.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.3ms SsaConstructionTime, 119.9ms SatisfiabilityAnalysisTime, 570.7ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 7 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2021-10-13 00:08:19,306 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c9346-93db-40bd-975a-624370660c93/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...