./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sumt4.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sumt4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y --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 8015f40beddbd48a6a69d0e81aa81c24a23cce70998d728277f4562b5eb207d5
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:30:59,110 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:30:59,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:30:59,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:30:59,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:30:59,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:30:59,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:30:59,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:30:59,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:30:59,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:30:59,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:30:59,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:30:59,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:30:59,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:30:59,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:30:59,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:30:59,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:30:59,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:30:59,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:30:59,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:30:59,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:30:59,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:30:59,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:30:59,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:30:59,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:30:59,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:30:59,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:30:59,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:30:59,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:30:59,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:30:59,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:30:59,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:30:59,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:30:59,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:30:59,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:30:59,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:30:59,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:30:59,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:30:59,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:30:59,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:30:59,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:30:59,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 17:30:59,225 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:30:59,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:30:59,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:30:59,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:30:59,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:30:59,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:30:59,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:30:59,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:30:59,228 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:30:59,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:30:59,229 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:30:59,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:30:59,229 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:30:59,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:30:59,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:30:59,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:30:59,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:30:59,231 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:30:59,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:30:59,231 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:30:59,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:30:59,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:30:59,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:30:59,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:30:59,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:30:59,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:30:59,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:30:59,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:30:59,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:30:59,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:30:59,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:30:59,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:30:59,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:30:59,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:30:59,235 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_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8015f40beddbd48a6a69d0e81aa81c24a23cce70998d728277f4562b5eb207d5
[2021-11-13 17:30:59,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:30:59,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:30:59,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:30:59,561 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:30:59,561 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:30:59,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/loops-crafted-1/sumt4.c
[2021-11-13 17:30:59,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/data/597c12e0a/ede47667a11e414f8cda97fa8471a4df/FLAG43b48ce70
[2021-11-13 17:31:00,168 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:31:00,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/sv-benchmarks/c/loops-crafted-1/sumt4.c
[2021-11-13 17:31:00,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/data/597c12e0a/ede47667a11e414f8cda97fa8471a4df/FLAG43b48ce70
[2021-11-13 17:31:00,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/data/597c12e0a/ede47667a11e414f8cda97fa8471a4df
[2021-11-13 17:31:00,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:31:00,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:31:00,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:31:00,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:31:00,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:31:00,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ac6a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00, skipping insertion in model container
[2021-11-13 17:31:00,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:31:00,577 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:31:00,756 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_fdfea5c3-ac68-4788-a695-b6f12d298e10/sv-benchmarks/c/loops-crafted-1/sumt4.c[403,416]
[2021-11-13 17:31:00,769 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:31:00,779 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:31:00,792 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_fdfea5c3-ac68-4788-a695-b6f12d298e10/sv-benchmarks/c/loops-crafted-1/sumt4.c[403,416]
[2021-11-13 17:31:00,798 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:31:00,812 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:31:00,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00 WrapperNode
[2021-11-13 17:31:00,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:31:00,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:31:00,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:31:00,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:31:00,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:31:00,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:31:00,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:31:00,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:31:00,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:31:00,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:31:00,870 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:31:00,870 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:31:00,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (1/1) ...
[2021-11-13 17:31:00,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:31:00,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:00,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:31:00,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:31:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:31:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:31:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:31:00,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:31:03,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:31:03,399 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:31:03,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:03 BoogieIcfgContainer
[2021-11-13 17:31:03,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:31:03,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:31:03,403 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:31:03,407 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:31:03,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:00" (1/3) ...
[2021-11-13 17:31:03,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687748c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:03, skipping insertion in model container
[2021-11-13 17:31:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00" (2/3) ...
[2021-11-13 17:31:03,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687748c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:03, skipping insertion in model container
[2021-11-13 17:31:03,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:03" (3/3) ...
[2021-11-13 17:31:03,410 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt4.c
[2021-11-13 17:31:03,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:31:03,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:31:03,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:31:03,475 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 17:31:03,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:31:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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)
[2021-11-13 17:31:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:31:03,495 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:03,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:03,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:03,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1807612808, now seen corresponding path program 1 times
[2021-11-13 17:31:03,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:03,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716341809]
[2021-11-13 17:31:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:03,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:03,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:03,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716341809]
[2021-11-13 17:31:03,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716341809] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:31:03,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:31:03,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 17:31:03,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892652330]
[2021-11-13 17:31:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:03,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:31:03,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:31:03,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:31:03,701 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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)
[2021-11-13 17:31:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:03,716 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions.
[2021-11-13 17:31:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:31:03,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7
[2021-11-13 17:31:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:03,727 INFO L225 Difference]: With dead ends: 24
[2021-11-13 17:31:03,728 INFO L226 Difference]: Without dead ends: 12
[2021-11-13 17:31:03,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:31:03,737 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:03,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:31:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2021-11-13 17:31:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2021-11-13 17:31:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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)
[2021-11-13 17:31:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions.
[2021-11-13 17:31:03,772 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7
[2021-11-13 17:31:03,772 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:03,772 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions.
[2021-11-13 17:31:03,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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)
[2021-11-13 17:31:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions.
[2021-11-13 17:31:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:31:03,774 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:03,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:03,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:31:03,774 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1806987197, now seen corresponding path program 1 times
[2021-11-13 17:31:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:03,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113438277]
[2021-11-13 17:31:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:03,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:04,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:04,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113438277]
[2021-11-13 17:31:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113438277] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:31:04,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:31:04,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:31:04,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817454961]
[2021-11-13 17:31:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:04,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:31:04,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:31:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:31:04,126 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2021-11-13 17:31:06,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:06,407 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions.
[2021-11-13 17:31:06,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 17:31:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7
[2021-11-13 17:31:06,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:06,411 INFO L225 Difference]: With dead ends: 25
[2021-11-13 17:31:06,411 INFO L226 Difference]: Without dead ends: 14
[2021-11-13 17:31:06,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:31:06,413 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2055.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2233.52ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:06,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2233.52ms Time]
[2021-11-13 17:31:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2021-11-13 17:31:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2021-11-13 17:31:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions.
[2021-11-13 17:31:06,419 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7
[2021-11-13 17:31:06,420 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:06,420 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions.
[2021-11-13 17:31:06,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2021-11-13 17:31:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions.
[2021-11-13 17:31:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 17:31:06,421 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:06,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:06,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 17:31:06,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash 87918451, now seen corresponding path program 1 times
[2021-11-13 17:31:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:06,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783491172]
[2021-11-13 17:31:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:06,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:07,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:07,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783491172]
[2021-11-13 17:31:07,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783491172] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:07,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965968299]
[2021-11-13 17:31:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:07,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:07,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:07,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:31:07,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:31:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:07,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-11-13 17:31:07,291 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:31:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:07,592 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:31:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 17:31:07,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965968299] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:07,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:31:07,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 6] total 13
[2021-11-13 17:31:07,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115069139]
[2021-11-13 17:31:07,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:07,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:31:07,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:07,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:31:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:31:07,838 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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)
[2021-11-13 17:31:09,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:12,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:12,315 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions.
[2021-11-13 17:31:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:31:12,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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
[2021-11-13 17:31:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:12,316 INFO L225 Difference]: With dead ends: 22
[2021-11-13 17:31:12,317 INFO L226 Difference]: Without dead ends: 18
[2021-11-13 17:31:12,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:31:12,319 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4100.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4443.40ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:12,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 4443.40ms Time]
[2021-11-13 17:31:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-11-13 17:31:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17.
[2021-11-13 17:31:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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)
[2021-11-13 17:31:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions.
[2021-11-13 17:31:12,324 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10
[2021-11-13 17:31:12,324 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions.
[2021-11-13 17:31:12,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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)
[2021-11-13 17:31:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions.
[2021-11-13 17:31:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 17:31:12,326 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:12,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:12,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:31:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:12,527 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -116405439, now seen corresponding path program 1 times
[2021-11-13 17:31:12,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:12,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694536989]
[2021-11-13 17:31:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:12,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:12,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:12,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694536989]
[2021-11-13 17:31:12,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694536989] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:12,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568468095]
[2021-11-13 17:31:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:12,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:12,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:31:12,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:31:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:12,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-11-13 17:31:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:31:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:13,279 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:31:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 17:31:13,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568468095] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:13,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:31:13,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 15
[2021-11-13 17:31:13,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905304768]
[2021-11-13 17:31:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:13,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:31:13,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:31:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:31:13,603 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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)
[2021-11-13 17:31:15,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:17,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:17,998 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions.
[2021-11-13 17:31:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:31:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 14
[2021-11-13 17:31:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:17,999 INFO L225 Difference]: With dead ends: 25
[2021-11-13 17:31:17,999 INFO L226 Difference]: Without dead ends: 21
[2021-11-13 17:31:18,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240
[2021-11-13 17:31:18,001 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4076.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4365.40ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:18,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 4365.40ms Time]
[2021-11-13 17:31:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-11-13 17:31:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18.
[2021-11-13 17:31:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions.
[2021-11-13 17:31:18,008 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 14
[2021-11-13 17:31:18,008 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:18,008 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions.
[2021-11-13 17:31:18,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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)
[2021-11-13 17:31:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions.
[2021-11-13 17:31:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-11-13 17:31:18,009 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:18,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:18,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:31:18,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:18,210 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1931219048, now seen corresponding path program 1 times
[2021-11-13 17:31:18,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:18,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135024994]
[2021-11-13 17:31:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:18,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:18,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:18,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135024994]
[2021-11-13 17:31:18,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135024994] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:18,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147924059]
[2021-11-13 17:31:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:18,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:18,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:18,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:31:18,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 17:31:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:18,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-11-13 17:31:18,345 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:31:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:18,721 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:31:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 17:31:18,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147924059] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:18,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:31:18,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 12
[2021-11-13 17:31:18,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517885397]
[2021-11-13 17:31:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:18,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:31:18,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:31:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:31:18,989 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:21,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:23,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:23,497 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions.
[2021-11-13 17:31:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:31:23,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2021-11-13 17:31:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:23,499 INFO L225 Difference]: With dead ends: 31
[2021-11-13 17:31:23,499 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 17:31:23,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:31:23,501 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4114.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4468.77ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:23,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 41 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 4468.77ms Time]
[2021-11-13 17:31:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 17:31:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-11-13 17:31:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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)
[2021-11-13 17:31:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions.
[2021-11-13 17:31:23,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15
[2021-11-13 17:31:23,508 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:23,508 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions.
[2021-11-13 17:31:23,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions.
[2021-11-13 17:31:23,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-11-13 17:31:23,510 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:23,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:23,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:31:23,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:23,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash -527836022, now seen corresponding path program 1 times
[2021-11-13 17:31:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:23,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713974873]
[2021-11-13 17:31:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:23,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 17:31:23,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:23,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713974873]
[2021-11-13 17:31:23,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713974873] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:23,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064450503]
[2021-11-13 17:31:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:23,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:23,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:31:23,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 17:31:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:23,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-11-13 17:31:23,915 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:31:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:31:24,546 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:31:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-11-13 17:31:24,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064450503] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:31:24,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:31:24,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 10] total 14
[2021-11-13 17:31:24,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404606913]
[2021-11-13 17:31:24,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:24,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:31:24,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:24,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:31:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:31:24,932 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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)
[2021-11-13 17:31:26,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:27,202 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions.
[2021-11-13 17:31:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:31:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 19
[2021-11-13 17:31:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:27,202 INFO L225 Difference]: With dead ends: 27
[2021-11-13 17:31:27,203 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 17:31:27,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:31:27,204 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2073.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2247.12ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:27,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2247.12ms Time]
[2021-11-13 17:31:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 17:31:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 17:31:27,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2021-11-13 17:31:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 17:31:27,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19
[2021-11-13 17:31:27,206 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:27,206 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 17:31:27,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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)
[2021-11-13 17:31:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 17:31:27,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 17:31:27,210 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:31:27,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:31:27,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-13 17:31:27,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 17:31:27,448 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 17:31:27,448 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 30) no Hoare annotation was computed.
[2021-11-13 17:31:27,448 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 30) no Hoare annotation was computed.
[2021-11-13 17:31:27,449 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 23 30) no Hoare annotation was computed.
[2021-11-13 17:31:27,449 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 30) no Hoare annotation was computed.
[2021-11-13 17:31:27,449 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 21 32) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~l~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~v4~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 4294967296))
[2021-11-13 17:31:27,449 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 32) no Hoare annotation was computed.
[2021-11-13 17:31:27,450 INFO L858 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed.
[2021-11-13 17:31:27,450 INFO L861 garLoopResultBuilder]: At program point L9-2(lines 8 13) the Hoare annotation is: true
[2021-11-13 17:31:27,450 INFO L861 garLoopResultBuilder]: At program point L34(lines 16 35) the Hoare annotation is: true
[2021-11-13 17:31:27,450 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 17:31:27,450 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 17:31:27,450 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 17:31:27,451 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed.
[2021-11-13 17:31:27,451 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed.
[2021-11-13 17:31:27,451 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed.
[2021-11-13 17:31:27,454 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:27,456 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:31:27,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:31:27 BoogieIcfgContainer
[2021-11-13 17:31:27,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 17:31:27,471 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 17:31:27,471 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 17:31:27,471 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 17:31:27,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:03" (3/4) ...
[2021-11-13 17:31:27,475 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 17:31:27,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2021-11-13 17:31:27,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-11-13 17:31:27,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 17:31:27,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 17:31:27,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 17:31:27,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 17:31:27,517 INFO L158 Benchmark]: Toolchain (without parser) took 26969.24ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 62.6MB in the beginning and 56.2MB in the end (delta: 6.4MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,517 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:31:27,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.75ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 75.0MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.56ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 73.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,518 INFO L158 Benchmark]: Boogie Preprocessor took 21.02ms. Allocated memory is still 100.7MB. Free memory was 73.3MB in the beginning and 72.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,519 INFO L158 Benchmark]: RCFGBuilder took 2532.00ms. Allocated memory is still 100.7MB. Free memory was 72.2MB in the beginning and 62.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,519 INFO L158 Benchmark]: TraceAbstraction took 24067.13ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.7MB in the beginning and 59.4MB in the end (delta: 2.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,520 INFO L158 Benchmark]: Witness Printer took 45.27ms. Allocated memory is still 121.6MB. Free memory was 59.4MB in the beginning and 56.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:31:27,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 263.75ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 75.0MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 33.56ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 73.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 21.02ms. Allocated memory is still 100.7MB. Free memory was 73.3MB in the beginning and 72.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 2532.00ms. Allocated memory is still 100.7MB. Free memory was 72.2MB in the beginning and 62.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 24067.13ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.7MB in the beginning and 59.4MB in the end (delta: 2.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB.
* Witness Printer took 45.27ms. Allocated memory is still 121.6MB. Free memory was 59.4MB in the beginning and 56.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* 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
- PositiveResult [Line: 10]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.0s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 17758.20ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 16420.24ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 53 mSDtfsCounter, 149 mSolverCounterSat, 6.38ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, InterpolantAutomatonStates: 26, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 1916 SizeOfPredicates, 24 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 41/72 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 16]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 8]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 21]: Loop Invariant
Derived loop invariant: l % 4294967296 == (v4 + i + j + k) % 4294967296
RESULT: Ultimate proved your program to be correct!
[2021-11-13 17:31:27,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfea5c3-ac68-4788-a695-b6f12d298e10/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE