./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c --full-output --architecture 64bit


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


Checking for overflows
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 20745b6559a0027241fed3a5cbed63a985f3358ae9d5e4871ad5e64eb23bcb25
..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(OVERFLOW)
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 23:30:42,918 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-28 23:30:42,921 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 23:30:42,989 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 23:30:42,990 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 23:30:42,995 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 23:30:42,997 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 23:30:43,002 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 23:30:43,005 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 23:30:43,012 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 23:30:43,014 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 23:30:43,016 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 23:30:43,017 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 23:30:43,020 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 23:30:43,022 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 23:30:43,032 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 23:30:43,035 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 23:30:43,036 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 23:30:43,039 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 23:30:43,049 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 23:30:43,051 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 23:30:43,053 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 23:30:43,057 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 23:30:43,058 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 23:30:43,070 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 23:30:43,071 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 23:30:43,071 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 23:30:43,074 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 23:30:43,075 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 23:30:43,077 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 23:30:43,077 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 23:30:43,079 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 23:30:43,081 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 23:30:43,082 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 23:30:43,084 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 23:30:43,085 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 23:30:43,086 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 23:30:43,086 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 23:30:43,087 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 23:30:43,088 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 23:30:43,089 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 23:30:43,090 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2021-10-28 23:30:43,129 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-28 23:30:43,129 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 23:30:43,130 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 23:30:43,130 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 23:30:43,140 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 23:30:43,141 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-28 23:30:43,141 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-28 23:30:43,142 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 23:30:43,142 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2021-10-28 23:30:43,142 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-28 23:30:43,143 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-28 23:30:43,144 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-28 23:30:43,144 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 23:30:43,144 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-28 23:30:43,145 INFO  L138        SettingsManager]:  * Check absence of signed integer overflows=true
[2021-10-28 23:30:43,145 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-28 23:30:43,145 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-28 23:30:43,145 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-28 23:30:43,146 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 23:30:43,146 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-28 23:30:43,146 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-28 23:30:43,147 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:30:43,147 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 23:30:43,147 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 23:30:43,148 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-28 23:30:43,148 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-28 23:30:43,148 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 23:30:43,148 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-28 23:30:43,149 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-28 23:30:43,151 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_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/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_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD
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 ! overflow) )


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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20745b6559a0027241fed3a5cbed63a985f3358ae9d5e4871ad5e64eb23bcb25
[2021-10-28 23:30:43,526 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 23:30:43,553 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 23:30:43,556 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 23:30:43,558 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-28 23:30:43,559 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-28 23:30:43,560 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c
[2021-10-28 23:30:43,651 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/data/4a1229999/0ab85e76cf2e4c9a96586f5bcdbee8a1/FLAG1022d22b2
[2021-10-28 23:30:44,164 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-28 23:30:44,165 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c
[2021-10-28 23:30:44,173 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/data/4a1229999/0ab85e76cf2e4c9a96586f5bcdbee8a1/FLAG1022d22b2
[2021-10-28 23:30:44,520 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/data/4a1229999/0ab85e76cf2e4c9a96586f5bcdbee8a1
[2021-10-28 23:30:44,523 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 23:30:44,525 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-28 23:30:44,527 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 23:30:44,527 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 23:30:44,546 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 23:30:44,547 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,549 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6a6278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44, skipping insertion in model container
[2021-10-28 23:30:44,549 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,558 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-28 23:30:44,574 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-28 23:30:44,810 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:30:44,828 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-28 23:30:44,863 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:30:44,883 INFO  L208         MainTranslator]: Completed translation
[2021-10-28 23:30:44,885 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44 WrapperNode
[2021-10-28 23:30:44,885 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 23:30:44,888 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-28 23:30:44,888 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-28 23:30:44,888 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-28 23:30:44,897 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,909 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,939 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-28 23:30:44,940 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 23:30:44,941 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 23:30:44,941 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 23:30:44,951 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,951 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,965 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,967 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,972 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,980 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,986 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:44,988 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 23:30:44,996 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 23:30:44,997 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 23:30:44,997 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-28 23:30:44,999 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (1/1) ...
[2021-10-28 23:30:45,009 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:30:45,024 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:30:45,045 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 23:30:45,065 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 23:30:45,099 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-10-28 23:30:45,099 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 23:30:45,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 23:30:45,100 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-10-28 23:30:45,101 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 23:30:45,102 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-10-28 23:30:45,349 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 23:30:45,350 INFO  L299             CfgBuilder]: Removed 6 assume(true) statements.
[2021-10-28 23:30:45,352 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:30:45 BoogieIcfgContainer
[2021-10-28 23:30:45,352 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 23:30:45,354 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 23:30:45,354 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 23:30:45,371 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-28 23:30:45,371 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:30:44" (1/3) ...
[2021-10-28 23:30:45,372 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6968cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:30:45, skipping insertion in model container
[2021-10-28 23:30:45,373 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:30:44" (2/3) ...
[2021-10-28 23:30:45,373 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6968cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:30:45, skipping insertion in model container
[2021-10-28 23:30:45,373 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:30:45" (3/3) ...
[2021-10-28 23:30:45,375 INFO  L111   eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c
[2021-10-28 23:30:45,382 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 23:30:45,383 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2021-10-28 23:30:45,444 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 23:30:45,452 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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
[2021-10-28 23:30:45,453 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2021-10-28 23:30:45,471 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 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)
[2021-10-28 23:30:45,477 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-10-28 23:30:45,477 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:30:45,478 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-10-28 23:30:45,479 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-10-28 23:30:45,485 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:30:45,486 INFO  L85        PathProgramCache]: Analyzing trace with hash 889574220, now seen corresponding path program 1 times
[2021-10-28 23:30:45,497 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:30:45,498 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911622898]
[2021-10-28 23:30:45,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:45,500 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:30:45,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:45,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:30:45,804 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:30:45,804 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911622898]
[2021-10-28 23:30:45,805 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911622898] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:30:45,806 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:30:45,806 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-28 23:30:45,808 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056946329]
[2021-10-28 23:30:45,813 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 23:30:45,814 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:30:45,829 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 23:30:45,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:30:45,833 INFO  L87              Difference]: Start difference. First operand  has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2021-10-28 23:30:45,940 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:30:45,941 INFO  L93              Difference]: Finished difference Result 60 states and 71 transitions.
[2021-10-28 23:30:45,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-28 23:30:45,943 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6
[2021-10-28 23:30:45,944 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:30:45,953 INFO  L225             Difference]: With dead ends: 60
[2021-10-28 23:30:45,954 INFO  L226             Difference]: Without dead ends: 35
[2021-10-28 23:30:45,957 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:30:45,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2021-10-28 23:30:45,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24.
[2021-10-28 23:30:45,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 23 states have internal predecessors, (26), 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)
[2021-10-28 23:30:45,996 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions.
[2021-10-28 23:30:45,998 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 6
[2021-10-28 23:30:45,998 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:30:45,998 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 26 transitions.
[2021-10-28 23:30:45,999 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2021-10-28 23:30:45,999 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions.
[2021-10-28 23:30:45,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-10-28 23:30:46,000 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:30:46,000 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:30:46,000 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 23:30:46,001 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-10-28 23:30:46,002 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:30:46,002 INFO  L85        PathProgramCache]: Analyzing trace with hash 180741427, now seen corresponding path program 1 times
[2021-10-28 23:30:46,002 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:30:46,003 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351708315]
[2021-10-28 23:30:46,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:46,003 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:30:46,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:46,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:30:46,061 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:30:46,061 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351708315]
[2021-10-28 23:30:46,062 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351708315] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:30:46,062 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:30:46,062 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-28 23:30:46,063 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573667121]
[2021-10-28 23:30:46,064 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-28 23:30:46,065 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:30:46,066 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-28 23:30:46,066 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-28 23:30:46,067 INFO  L87              Difference]: Start difference. First operand 24 states and 26 transitions. Second operand  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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)
[2021-10-28 23:30:46,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:30:46,088 INFO  L93              Difference]: Finished difference Result 35 states and 37 transitions.
[2021-10-28 23:30:46,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-28 23:30:46,089 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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
[2021-10-28 23:30:46,089 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:30:46,090 INFO  L225             Difference]: With dead ends: 35
[2021-10-28 23:30:46,090 INFO  L226             Difference]: Without dead ends: 24
[2021-10-28 23:30:46,091 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-28 23:30:46,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2021-10-28 23:30:46,095 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2021-10-28 23:30:46,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 23 states have internal predecessors, (25), 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)
[2021-10-28 23:30:46,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2021-10-28 23:30:46,097 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8
[2021-10-28 23:30:46,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:30:46,098 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2021-10-28 23:30:46,098 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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)
[2021-10-28 23:30:46,098 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2021-10-28 23:30:46,099 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-28 23:30:46,099 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:30:46,100 INFO  L513         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:30:46,100 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-28 23:30:46,100 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-10-28 23:30:46,101 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:30:46,101 INFO  L85        PathProgramCache]: Analyzing trace with hash -869586168, now seen corresponding path program 1 times
[2021-10-28 23:30:46,102 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:30:46,102 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570667860]
[2021-10-28 23:30:46,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:46,103 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:30:46,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:46,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:30:46,184 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:30:46,185 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570667860]
[2021-10-28 23:30:46,185 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570667860] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:30:46,185 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544241699]
[2021-10-28 23:30:46,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:46,186 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:30:46,186 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:30:46,191 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:30:46,215 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-28 23:30:46,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:46,254 INFO  L263         TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 23:30:46,259 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:30:46,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:30:46,361 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [544241699] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:30:46,361 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:30:46,361 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2021-10-28 23:30:46,362 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115101578]
[2021-10-28 23:30:46,363 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 23:30:46,363 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:30:46,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 23:30:46,365 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:30:46,365 INFO  L87              Difference]: Start difference. First operand 24 states and 25 transitions. Second operand  has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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)
[2021-10-28 23:30:46,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:30:46,451 INFO  L93              Difference]: Finished difference Result 41 states and 43 transitions.
[2021-10-28 23:30:46,452 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-10-28 23:30:46,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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) Word has length 10
[2021-10-28 23:30:46,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:30:46,453 INFO  L225             Difference]: With dead ends: 41
[2021-10-28 23:30:46,454 INFO  L226             Difference]: Without dead ends: 40
[2021-10-28 23:30:46,455 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2021-10-28 23:30:46,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-10-28 23:30:46,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27.
[2021-10-28 23:30:46,459 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 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)
[2021-10-28 23:30:46,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions.
[2021-10-28 23:30:46,460 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10
[2021-10-28 23:30:46,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:30:46,461 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 29 transitions.
[2021-10-28 23:30:46,461 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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)
[2021-10-28 23:30:46,462 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions.
[2021-10-28 23:30:46,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 23:30:46,462 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:30:46,463 INFO  L513         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1]
[2021-10-28 23:30:46,508 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-28 23:30:46,685 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:30:46,686 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-10-28 23:30:46,686 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:30:46,687 INFO  L85        PathProgramCache]: Analyzing trace with hash -1187367381, now seen corresponding path program 1 times
[2021-10-28 23:30:46,687 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:30:46,687 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763532560]
[2021-10-28 23:30:46,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:46,688 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:30:46,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:46,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:30:46,776 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:30:46,776 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763532560]
[2021-10-28 23:30:46,777 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763532560] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:30:46,777 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829915700]
[2021-10-28 23:30:46,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:46,778 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:30:46,778 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:30:46,779 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:30:46,786 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-28 23:30:46,847 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:46,848 INFO  L263         TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 23:30:46,851 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:30:46,973 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:30:46,974 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829915700] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:30:46,974 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:30:46,975 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2021-10-28 23:30:46,975 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539923407]
[2021-10-28 23:30:46,976 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:30:46,976 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:30:46,977 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:30:46,977 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:30:46,979 INFO  L87              Difference]: Start difference. First operand 27 states and 29 transitions. Second operand  has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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)
[2021-10-28 23:30:47,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:30:47,032 INFO  L93              Difference]: Finished difference Result 27 states and 29 transitions.
[2021-10-28 23:30:47,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-10-28 23:30:47,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11
[2021-10-28 23:30:47,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:30:47,035 INFO  L225             Difference]: With dead ends: 27
[2021-10-28 23:30:47,035 INFO  L226             Difference]: Without dead ends: 26
[2021-10-28 23:30:47,037 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:30:47,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2021-10-28 23:30:47,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2021-10-28 23:30:47,047 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 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)
[2021-10-28 23:30:47,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions.
[2021-10-28 23:30:47,053 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11
[2021-10-28 23:30:47,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:30:47,054 INFO  L470      AbstractCegarLoop]: Abstraction has 26 states and 28 transitions.
[2021-10-28 23:30:47,054 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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)
[2021-10-28 23:30:47,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions.
[2021-10-28 23:30:47,056 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-10-28 23:30:47,057 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:30:47,057 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:30:47,111 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-28 23:30:47,283 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:30:47,283 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-10-28 23:30:47,284 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:30:47,284 INFO  L85        PathProgramCache]: Analyzing trace with hash 1844723183, now seen corresponding path program 1 times
[2021-10-28 23:30:47,284 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:30:47,285 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28938]
[2021-10-28 23:30:47,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:47,285 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:30:47,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:30:47,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-28 23:30:47,360 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:30:47,360 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28938]
[2021-10-28 23:30:47,361 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28938] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:30:47,361 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:30:47,361 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-28 23:30:47,361 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630403416]
[2021-10-28 23:30:47,362 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-28 23:30:47,362 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:30:47,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-28 23:30:47,365 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-28 23:30:47,366 INFO  L87              Difference]: Start difference. First operand 26 states and 28 transitions. Second operand  has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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)
[2021-10-28 23:30:47,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:30:47,414 INFO  L93              Difference]: Finished difference Result 36 states and 38 transitions.
[2021-10-28 23:30:47,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-28 23:30:47,415 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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
[2021-10-28 23:30:47,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:30:47,417 INFO  L225             Difference]: With dead ends: 36
[2021-10-28 23:30:47,418 INFO  L226             Difference]: Without dead ends: 34
[2021-10-28 23:30:47,419 INFO  L786         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-28 23:30:47,420 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-10-28 23:30:47,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30.
[2021-10-28 23:30:47,429 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 25 states have (on average 1.28) internal successors, (32), 29 states have internal predecessors, (32), 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)
[2021-10-28 23:30:47,430 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions.
[2021-10-28 23:30:47,431 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 12
[2021-10-28 23:30:47,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:30:47,431 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 32 transitions.
[2021-10-28 23:30:47,432 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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)
[2021-10-28 23:30:47,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions.
[2021-10-28 23:30:47,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-10-28 23:30:47,437 INFO  L505         BasicCegarLoop]: Found error trace
[2021-10-28 23:30:47,438 INFO  L513         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:30:47,438 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-10-28 23:30:47,439 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-10-28 23:30:47,440 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:30:47,441 INFO  L85        PathProgramCache]: Analyzing trace with hash -1042512047, now seen corresponding path program 1 times
[2021-10-28 23:30:47,441 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:30:47,442 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691425345]
[2021-10-28 23:30:47,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:30:47,443 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:30:47,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:30:47,485 INFO  L355             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-28 23:30:47,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:30:47,544 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-28 23:30:47,544 INFO  L627         BasicCegarLoop]: Counterexample is feasible
[2021-10-28 23:30:47,546 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-28 23:30:47,578 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-28 23:30:47,579 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-28 23:30:47,579 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-28 23:30:47,580 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-28 23:30:47,580 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW
[2021-10-28 23:30:47,580 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-10-28 23:30:47,601 INFO  L731         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2021-10-28 23:30:47,605 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 23:30:47,658 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:30:47 BoogieIcfgContainer
[2021-10-28 23:30:47,658 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 23:30:47,659 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 23:30:47,659 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-28 23:30:47,659 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-28 23:30:47,660 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:30:45" (3/4) ...
[2021-10-28 23:30:47,662 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-28 23:30:47,714 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 23:30:47,714 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 23:30:47,716 INFO  L168              Benchmark]: Toolchain (without parser) took 3190.03 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.3 MB in the beginning and 91.3 MB in the end (delta: -42.0 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,716 INFO  L168              Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,717 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 358.75 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.1 MB in the beginning and 92.2 MB in the end (delta: -43.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,718 INFO  L168              Benchmark]: Boogie Procedure Inliner took 51.49 ms. Allocated memory is still 117.4 MB. Free memory was 92.2 MB in the beginning and 90.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,718 INFO  L168              Benchmark]: Boogie Preprocessor took 55.36 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 89.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,719 INFO  L168              Benchmark]: RCFGBuilder took 355.78 ms. Allocated memory is still 117.4 MB. Free memory was 89.6 MB in the beginning and 80.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,719 INFO  L168              Benchmark]: TraceAbstraction took 2304.50 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 93.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,720 INFO  L168              Benchmark]: Witness Printer took 54.93 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:30:47,726 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 358.75 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.1 MB in the beginning and 92.2 MB in the end (delta: -43.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 51.49 ms. Allocated memory is still 117.4 MB. Free memory was 92.2 MB in the beginning and 90.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 55.36 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 89.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * RCFGBuilder took 355.78 ms. Allocated memory is still 117.4 MB. Free memory was 89.6 MB in the beginning and 80.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 2304.50 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 93.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB.
 * Witness Printer took 54.93 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 26]: integer overflow possible
    integer overflow possible
We found a FailurePath: 
[L12]              int a_length = __VERIFIER_nondet_int();
[L13]  COND FALSE  !(a_length <  1)
[L16]              int a[a_length];
[L17]              int j = 0;
[L17]  COND TRUE   j < a_length
[L18]              a[j] = __VERIFIER_nondet_int()
[L17]              j++
[L17]  COND FALSE  !(j < a_length)
[L20]              int offset = 1;
[L21]              int i = 0;
[L22]  COND TRUE   i < a_length
[L23]  EXPR        a[i]
[L23]  COND FALSE  !(a[i] < 0)
[L26]  EXPR        i + offset
[L26]  EXPR        a[i]
[L26]              i + offset + a[i]

  - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 68 SDslu, 156 SDs, 0 SdLazy, 112 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 4 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 5/15 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!
[2021-10-28 23:30:47,785 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e73f85fd-f116-4794-afd5-ee7e88a6a867/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...