./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condmf.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 57096758
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3 --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 e84fa47d445c1764a4d529303801930082611d3b
.......................................................................................................................................................................................................................................................................................................................................................................................
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-5709675
[2021-10-15 19:40:04,473 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-15 19:40:04,475 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-15 19:40:04,520 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-15 19:40:04,521 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-15 19:40:04,526 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-15 19:40:04,528 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-15 19:40:04,533 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-15 19:40:04,535 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-15 19:40:04,543 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-15 19:40:04,544 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-15 19:40:04,546 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-15 19:40:04,547 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-15 19:40:04,550 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-15 19:40:04,553 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-15 19:40:04,562 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-15 19:40:04,564 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-15 19:40:04,565 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-15 19:40:04,568 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-15 19:40:04,575 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-15 19:40:04,577 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-15 19:40:04,578 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-15 19:40:04,580 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-15 19:40:04,581 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-15 19:40:04,585 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-15 19:40:04,585 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-15 19:40:04,586 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-15 19:40:04,587 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-15 19:40:04,588 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-15 19:40:04,589 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-15 19:40:04,589 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-15 19:40:04,590 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-15 19:40:04,592 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-15 19:40:04,593 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-15 19:40:04,594 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-15 19:40:04,594 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-15 19:40:04,595 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-15 19:40:04,596 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-15 19:40:04,596 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-15 19:40:04,597 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-15 19:40:04,598 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-15 19:40:04,599 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-15 19:40:04,631 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-15 19:40:04,632 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-15 19:40:04,632 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-15 19:40:04,632 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-15 19:40:04,633 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-15 19:40:04,634 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-15 19:40:04,634 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-15 19:40:04,634 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-15 19:40:04,634 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-15 19:40:04,635 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-15 19:40:04,635 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-15 19:40:04,635 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-15 19:40:04,635 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-15 19:40:04,635 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-15 19:40:04,636 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-15 19:40:04,636 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-15 19:40:04,636 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-15 19:40:04,636 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-15 19:40:04,636 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-15 19:40:04,637 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-15 19:40:04,637 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-15 19:40:04,637 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-15 19:40:04,637 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-15 19:40:04,643 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-15 19:40:04,644 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-15 19:40:04,644 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-15 19:40:04,644 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-15 19:40:04,644 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-15 19:40:04,645 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-10-15 19:40:04,647 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-15 19:40:04,647 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-15 19:40:04,647 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-15 19:40:04,647 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_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/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_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3
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 -> e84fa47d445c1764a4d529303801930082611d3b
[2021-10-15 19:40:04,909 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-15 19:40:04,939 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-15 19:40:04,942 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-15 19:40:04,943 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-15 19:40:04,944 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-15 19:40:04,945 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-fpi/condmf.c
[2021-10-15 19:40:05,016 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/data/b30688ed2/0f447e08aaba4175965db4549a2877cc/FLAGfa01b38a3
[2021-10-15 19:40:05,462 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-15 19:40:05,463 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/sv-benchmarks/c/array-fpi/condmf.c
[2021-10-15 19:40:05,472 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/data/b30688ed2/0f447e08aaba4175965db4549a2877cc/FLAGfa01b38a3
[2021-10-15 19:40:05,973 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/data/b30688ed2/0f447e08aaba4175965db4549a2877cc
[2021-10-15 19:40:05,975 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-15 19:40:05,977 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-15 19:40:05,979 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-15 19:40:05,979 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-15 19:40:05,983 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-15 19:40:05,984 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:40:05" (1/1) ...
[2021-10-15 19:40:05,985 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bbc384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05, skipping insertion in model container
[2021-10-15 19:40:05,985 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:40:05" (1/1) ...
[2021-10-15 19:40:05,992 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-15 19:40:06,006 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-15 19:40:06,148 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_b65151bd-115e-4969-bc9a-825364c69c57/sv-benchmarks/c/array-fpi/condmf.c[589,602]
[2021-10-15 19:40:06,165 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-15 19:40:06,177 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-15 19:40:06,189 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_b65151bd-115e-4969-bc9a-825364c69c57/sv-benchmarks/c/array-fpi/condmf.c[589,602]
[2021-10-15 19:40:06,196 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-15 19:40:06,209 INFO  L208         MainTranslator]: Completed translation
[2021-10-15 19:40:06,210 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06 WrapperNode
[2021-10-15 19:40:06,210 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-15 19:40:06,211 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-15 19:40:06,211 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-15 19:40:06,211 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-15 19:40:06,217 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,224 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,245 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-15 19:40:06,246 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-15 19:40:06,247 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-15 19:40:06,247 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-15 19:40:06,255 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,256 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,258 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,258 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,264 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,268 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,270 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,272 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-15 19:40:06,273 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-15 19:40:06,273 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-15 19:40:06,273 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-15 19:40:06,279 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (1/1) ...
[2021-10-15 19:40:06,288 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-15 19:40:06,297 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/z3
[2021-10-15 19:40:06,318 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-15 19:40:06,326 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-15 19:40:06,353 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-15 19:40:06,353 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-15 19:40:06,353 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-10-15 19:40:06,353 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-10-15 19:40:06,354 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-15 19:40:06,354 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-15 19:40:06,354 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-10-15 19:40:06,562 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-15 19:40:06,562 INFO  L299             CfgBuilder]: Removed 11 assume(true) statements.
[2021-10-15 19:40:06,564 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:06 BoogieIcfgContainer
[2021-10-15 19:40:06,565 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-15 19:40:06,566 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-15 19:40:06,567 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-15 19:40:06,570 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-15 19:40:06,570 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:40:05" (1/3) ...
[2021-10-15 19:40:06,571 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45244c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:40:06, skipping insertion in model container
[2021-10-15 19:40:06,572 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:06" (2/3) ...
[2021-10-15 19:40:06,572 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45244c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:40:06, skipping insertion in model container
[2021-10-15 19:40:06,572 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:06" (3/3) ...
[2021-10-15 19:40:06,574 INFO  L111   eAbstractionObserver]: Analyzing ICFG condmf.c
[2021-10-15 19:40:06,579 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-15 19:40:06,580 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-10-15 19:40:06,629 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-15 19:40:06,636 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-10-15 19:40:06,637 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-15 19:40:06,647 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 22 places, 31 transitions, 62 flow
[2021-10-15 19:40:06,670 INFO  L129       PetriNetUnfolder]: 10/31 cut-off events.
[2021-10-15 19:40:06,671 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-10-15 19:40:06,673 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 32 conditions, 31 events. 10/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. 
[2021-10-15 19:40:06,673 INFO  L82        GeneralOperation]: Start removeDead. Operand has 22 places, 31 transitions, 62 flow
[2021-10-15 19:40:06,678 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 18 places, 25 transitions, 50 flow
[2021-10-15 19:40:06,684 INFO  L129       PetriNetUnfolder]: 7/22 cut-off events.
[2021-10-15 19:40:06,684 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-10-15 19:40:06,684 INFO  L246   CegarLoopForPetriNet]: Found error trace
[2021-10-15 19:40:06,685 INFO  L254   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-15 19:40:06,686 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-15 19:40:06,691 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-15 19:40:06,691 INFO  L82        PathProgramCache]: Analyzing trace with hash -788178707, now seen corresponding path program 1 times
[2021-10-15 19:40:06,700 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-15 19:40:06,701 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510053217]
[2021-10-15 19:40:06,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-15 19:40:06,702 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-15 19:40:06,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-15 19:40:06,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-15 19:40:06,901 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-15 19:40:06,902 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510053217]
[2021-10-15 19:40:06,903 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510053217] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-15 19:40:06,904 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-15 19:40:06,904 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-15 19:40:06,906 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530877660]
[2021-10-15 19:40:06,916 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-15 19:40:06,917 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-15 19:40:06,937 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-15 19:40:06,941 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-15 19:40:06,945 INFO  L499   CegarLoopForPetriNet]: Number of universal loopers: 26 out of 31
[2021-10-15 19:40:06,949 INFO  L92    encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 25 transitions, 50 flow. Second operand  has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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)
[2021-10-15 19:40:06,950 INFO  L101   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-10-15 19:40:06,950 INFO  L102   encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 31
[2021-10-15 19:40:06,952 INFO  L74            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-10-15 19:40:06,979 INFO  L129       PetriNetUnfolder]: 4/21 cut-off events.
[2021-10-15 19:40:06,980 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-10-15 19:40:06,983 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 23 conditions, 21 events. 4/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 4/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. 
[2021-10-15 19:40:07,021 INFO  L132   encePairwiseOnDemand]: 27/31 looper letters, 0 selfloop transitions, 0 changer transitions 0/21 dead transitions.
[2021-10-15 19:40:07,022 INFO  L138   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 42 flow
[2021-10-15 19:40:07,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-15 19:40:07,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2021-10-15 19:40:07,032 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions.
[2021-10-15 19:40:07,034 INFO  L544   CegarLoopForPetriNet]: DFA transition density 0.9032258064516129
[2021-10-15 19:40:07,041 INFO  L72            ComplementDD]: Start complementDD. Operand 2 states and 56 transitions.
[2021-10-15 19:40:07,041 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 2 states and 56 transitions.
[2021-10-15 19:40:07,043 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-10-15 19:40:07,045 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 56 transitions.
[2021-10-15 19:40:07,062 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 3 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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)
[2021-10-15 19:40:07,080 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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)
[2021-10-15 19:40:07,080 INFO  L81            ComplementDD]: Finished complementDD. Result  has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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)
[2021-10-15 19:40:07,082 INFO  L186             Difference]: Start difference. First operand has 18 places, 25 transitions, 50 flow. Second operand 2 states and 56 transitions.
[2021-10-15 19:40:07,083 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 42 flow
[2021-10-15 19:40:07,085 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 42 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-10-15 19:40:07,088 INFO  L242             Difference]: Finished difference. Result has 19 places, 21 transitions, 42 flow
[2021-10-15 19:40:07,090 INFO  L317   CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=19, PETRI_TRANSITIONS=21}
[2021-10-15 19:40:07,091 INFO  L334   CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places.
[2021-10-15 19:40:07,092 INFO  L470      AbstractCegarLoop]: Abstraction has has 19 places, 21 transitions, 42 flow
[2021-10-15 19:40:07,093 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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)
[2021-10-15 19:40:07,094 INFO  L246   CegarLoopForPetriNet]: Found error trace
[2021-10-15 19:40:07,094 INFO  L254   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-15 19:40:07,094 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-15 19:40:07,096 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-15 19:40:07,097 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-15 19:40:07,098 INFO  L82        PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times
[2021-10-15 19:40:07,098 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-15 19:40:07,098 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152214928]
[2021-10-15 19:40:07,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-15 19:40:07,099 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-15 19:40:07,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-15 19:40:07,259 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-15 19:40:07,260 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-15 19:40:07,260 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152214928]
[2021-10-15 19:40:07,260 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152214928] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-15 19:40:07,261 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-15 19:40:07,261 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-15 19:40:07,261 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435573496]
[2021-10-15 19:40:07,262 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-15 19:40:07,263 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-15 19:40:07,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-15 19:40:07,264 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-10-15 19:40:07,265 INFO  L499   CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31
[2021-10-15 19:40:07,270 INFO  L92    encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 21 transitions, 42 flow. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2021-10-15 19:40:07,270 INFO  L101   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-10-15 19:40:07,270 INFO  L102   encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31
[2021-10-15 19:40:07,270 INFO  L74            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-10-15 19:40:07,365 INFO  L129       PetriNetUnfolder]: 5/33 cut-off events.
[2021-10-15 19:40:07,366 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-10-15 19:40:07,367 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 60 conditions, 33 events. 5/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 57. Up to 14 conditions per place. 
[2021-10-15 19:40:07,369 INFO  L132   encePairwiseOnDemand]: 22/31 looper letters, 17 selfloop transitions, 7 changer transitions 0/29 dead transitions.
[2021-10-15 19:40:07,369 INFO  L138   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 29 transitions, 106 flow
[2021-10-15 19:40:07,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-15 19:40:07,371 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2021-10-15 19:40:07,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions.
[2021-10-15 19:40:07,375 INFO  L544   CegarLoopForPetriNet]: DFA transition density 0.46774193548387094
[2021-10-15 19:40:07,377 INFO  L72            ComplementDD]: Start complementDD. Operand 4 states and 58 transitions.
[2021-10-15 19:40:07,377 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 4 states and 58 transitions.
[2021-10-15 19:40:07,378 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-10-15 19:40:07,379 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 58 transitions.
[2021-10-15 19:40:07,380 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 5 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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)
[2021-10-15 19:40:07,383 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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)
[2021-10-15 19:40:07,384 INFO  L81            ComplementDD]: Finished complementDD. Result  has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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)
[2021-10-15 19:40:07,385 INFO  L186             Difference]: Start difference. First operand has 19 places, 21 transitions, 42 flow. Second operand 4 states and 58 transitions.
[2021-10-15 19:40:07,385 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 29 transitions, 106 flow
[2021-10-15 19:40:07,387 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 29 transitions, 106 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-10-15 19:40:07,392 INFO  L242             Difference]: Finished difference. Result has 23 places, 24 transitions, 78 flow
[2021-10-15 19:40:07,392 INFO  L317   CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=23, PETRI_TRANSITIONS=24}
[2021-10-15 19:40:07,393 INFO  L334   CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places.
[2021-10-15 19:40:07,394 INFO  L470      AbstractCegarLoop]: Abstraction has has 23 places, 24 transitions, 78 flow
[2021-10-15 19:40:07,394 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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)
[2021-10-15 19:40:07,394 INFO  L246   CegarLoopForPetriNet]: Found error trace
[2021-10-15 19:40:07,395 INFO  L254   CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-15 19:40:07,395 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-15 19:40:07,395 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-15 19:40:07,399 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-15 19:40:07,399 INFO  L82        PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times
[2021-10-15 19:40:07,399 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-15 19:40:07,400 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735690822]
[2021-10-15 19:40:07,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-15 19:40:07,400 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-15 19:40:07,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-15 19:40:07,533 INFO  L354             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-15 19:40:07,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-15 19:40:07,624 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-15 19:40:07,625 INFO  L626         BasicCegarLoop]: Counterexample is feasible
[2021-10-15 19:40:07,626 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-15 19:40:07,628 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-10-15 19:40:07,634 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-15 19:40:07,661 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:40:07 BoogieIcfgContainer
[2021-10-15 19:40:07,662 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-15 19:40:07,662 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-15 19:40:07,662 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-15 19:40:07,663 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-15 19:40:07,663 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:06" (3/4) ...
[2021-10-15 19:40:07,665 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-15 19:40:07,713 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/witness.graphml
[2021-10-15 19:40:07,717 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-15 19:40:07,719 INFO  L168              Benchmark]: Toolchain (without parser) took 1741.33 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.8 MB in the beginning and 66.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,720 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,720 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 231.78 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 68.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,721 INFO  L168              Benchmark]: Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 66.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,722 INFO  L168              Benchmark]: Boogie Preprocessor took 25.92 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,722 INFO  L168              Benchmark]: RCFGBuilder took 291.78 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 55.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,723 INFO  L168              Benchmark]: TraceAbstraction took 1095.39 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 54.9 MB in the beginning and 68.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,724 INFO  L168              Benchmark]: Witness Printer took 55.28 ms. Allocated memory is still 111.1 MB. Free memory was 68.6 MB in the beginning and 66.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-15 19:40:07,728 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 231.78 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 68.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 66.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 25.92 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * RCFGBuilder took 291.78 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 55.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 1095.39 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 54.9 MB in the beginning and 68.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB.
 * Witness Printer took 55.28 ms. Allocated memory is still 111.1 MB. Free memory was 68.6 MB in the beginning and 66.5 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: 15]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L19]              int N;
       VAL         [N=0]
[L23]              N = __VERIFIER_nondet_int()
[L24]  COND FALSE  !(N <= 0)
[L13]  COND FALSE  !(!cond)
       VAL         [N=1]
[L27]              int i;
[L28]              int *a = malloc(sizeof(int)*N);
[L30]              i = 0
       VAL         [N=1]
[L30]  COND TRUE   i < N
[L32]              a[i] = 0
       VAL         [N=1]
[L30]              i++
       VAL         [N=1]
[L30]  COND FALSE  !(i < N)
       VAL         [N=1]
[L35]              i = 0
       VAL         [N=1]
[L35]  COND TRUE   i < N
       VAL         [N=1]
[L37]  COND TRUE   N%2 == 1
[L39]  EXPR        a[i]
[L39]              a[i] = a[i] + 2
[L35]              i++
       VAL         [N=1]
[L35]  COND FALSE  !(i < N)
       VAL         [N=1]
[L47]              i = 0
       VAL         [N=1]
[L47]  COND TRUE   i < N
[L49]              a[i]
[L15]  COND TRUE   !(cond)
       VAL         [N=1]
[L15]              reach_error()
       VAL         [N=1]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1008.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 286.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 41.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 23 SDslu, 0 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.4ms SsaConstructionTime, 215.8ms SatisfiabilityAnalysisTime, 177.1ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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!
[2021-10-15 19:40:07,781 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65151bd-115e-4969-bc9a-825364c69c57/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...