./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire2.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_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/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_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/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_21d06144-7be9-4fcd-8b56-30771600de26/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 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:31:16,051 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:31:16,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:31:16,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:31:16,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:31:16,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:31:16,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:31:16,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:31:16,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:31:16,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:31:16,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:31:16,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:31:16,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:31:16,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:31:16,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:31:16,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:31:16,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:31:16,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:31:16,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:31:16,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:31:16,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:31:16,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:31:16,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:31:16,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:31:16,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:31:16,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:31:16,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:31:16,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:31:16,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:31:16,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:31:16,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:31:16,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:31:16,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:31:16,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:31:16,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:31:16,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:31:16,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:31:16,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:31:16,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:31:16,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:31:16,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:31:16,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 17:31:16,224 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:31:16,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:31:16,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:31:16,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:31:16,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:31:16,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:31:16,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:31:16,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:31:16,227 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:31:16,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:31:16,228 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:31:16,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:31:16,228 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:31:16,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:31:16,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:31:16,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:31:16,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:31:16,229 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:31:16,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:31:16,230 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:31:16,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:31:16,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:31:16,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:31:16,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:31:16,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:31:16,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:31:16,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:31:16,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:31:16,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:31:16,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:31:16,241 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:31:16,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:31:16,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:31:16,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:31:16,242 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_21d06144-7be9-4fcd-8b56-30771600de26/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf
[2021-11-13 17:31:16,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:31:16,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:31:16,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:31:16,577 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:31:16,578 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:31:16,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench/freire2.c
[2021-11-13 17:31:16,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/d3b09fb3e/719bdceb0cef434eb10b607cdc0216b3/FLAG4357270f5
[2021-11-13 17:31:17,132 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:31:17,133 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/sv-benchmarks/c/nla-digbench/freire2.c
[2021-11-13 17:31:17,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/d3b09fb3e/719bdceb0cef434eb10b607cdc0216b3/FLAG4357270f5
[2021-11-13 17:31:17,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/d3b09fb3e/719bdceb0cef434eb10b607cdc0216b3
[2021-11-13 17:31:17,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:31:17,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:31:17,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:31:17,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:31:17,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:31:17,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ad22b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17, skipping insertion in model container
[2021-11-13 17:31:17,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:31:17,533 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:31:17,685 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_21d06144-7be9-4fcd-8b56-30771600de26/sv-benchmarks/c/nla-digbench/freire2.c[709,722]
[2021-11-13 17:31:17,718 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:31:17,727 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:31:17,739 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_21d06144-7be9-4fcd-8b56-30771600de26/sv-benchmarks/c/nla-digbench/freire2.c[709,722]
[2021-11-13 17:31:17,750 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:31:17,764 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:31:17,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17 WrapperNode
[2021-11-13 17:31:17,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:31:17,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:31:17,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:31:17,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:31:17,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:31:17,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:31:17,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:31:17,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:31:17,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:31:17,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:31:17,829 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:31:17,830 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:31:17,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (1/1) ...
[2021-11-13 17:31:17,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:31:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:17,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:31:17,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:31:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:31:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:31:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:31:17,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:31:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 17:31:17,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 17:31:18,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:31:18,237 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:31:18,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:18 BoogieIcfgContainer
[2021-11-13 17:31:18,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:31:18,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:31:18,242 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:31:18,250 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:31:18,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:17" (1/3) ...
[2021-11-13 17:31:18,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf47189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:18, skipping insertion in model container
[2021-11-13 17:31:18,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:17" (2/3) ...
[2021-11-13 17:31:18,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf47189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:18, skipping insertion in model container
[2021-11-13 17:31:18,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:18" (3/3) ...
[2021-11-13 17:31:18,253 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c
[2021-11-13 17:31:18,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:31:18,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:31:18,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:31:18,379 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 17:31:18,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:31:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 17:31:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:31:18,403 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:18,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:18,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times
[2021-11-13 17:31:18,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:18,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600271220]
[2021-11-13 17:31:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:18,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:18,581 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 17:31:18,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:31:18,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600271220]
[2021-11-13 17:31:18,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600271220] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:31:18,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:31:18,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 17:31:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542898419]
[2021-11-13 17:31:18,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:18,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:31:18,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:31:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:31:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:31:18,620 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:18,642 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions.
[2021-11-13 17:31:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:31:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 17:31:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:18,654 INFO L225 Difference]: With dead ends: 38
[2021-11-13 17:31:18,655 INFO L226 Difference]: Without dead ends: 16
[2021-11-13 17:31:18,659 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 17:31:18,666 INFO L933 BasicCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:18,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:31:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2021-11-13 17:31:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2021-11-13 17:31:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:31:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions.
[2021-11-13 17:31:18,716 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7
[2021-11-13 17:31:18,716 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:18,716 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions.
[2021-11-13 17:31:18,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions.
[2021-11-13 17:31:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:31:18,718 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:18,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:18,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:31:18,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times
[2021-11-13 17:31:18,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:31:18,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408487714]
[2021-11-13 17:31:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:18,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:31:18,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:31:18,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335757806]
[2021-11-13 17:31:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:18,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:18,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:18,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:31:18,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:31:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:31:18,840 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 17:31:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:31:18,894 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 17:31:18,896 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 17:31:18,897 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:31:18,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:31:19,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:31:19,123 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1]
[2021-11-13 17:31:19,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:31:19,139 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206)
at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132)
at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:155)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2021-11-13 17:31:19,145 INFO L158 Benchmark]: Toolchain (without parser) took 1654.09ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 52.5MB in the beginning and 85.7MB in the end (delta: -33.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:31:19,145 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:31:19,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.24ms. Allocated memory is still 94.4MB. Free memory was 52.3MB in the beginning and 68.1MB in the end (delta: -15.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB.
[2021-11-13 17:31:19,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.44ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 66.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:31:19,149 INFO L158 Benchmark]: Boogie Preprocessor took 25.67ms. Allocated memory is still 94.4MB. Free memory was 66.5MB in the beginning and 65.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:31:19,153 INFO L158 Benchmark]: RCFGBuilder took 410.47ms. Allocated memory is still 94.4MB. Free memory was 65.2MB in the beginning and 55.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:31:19,154 INFO L158 Benchmark]: TraceAbstraction took 899.14ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 55.2MB in the beginning and 85.7MB in the end (delta: -30.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:31:19,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 275.24ms. Allocated memory is still 94.4MB. Free memory was 52.3MB in the beginning and 68.1MB in the end (delta: -15.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 36.44ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 66.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 25.67ms. Allocated memory is still 94.4MB. Free memory was 66.5MB in the beginning and 65.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 410.47ms. Allocated memory is still 94.4MB. Free memory was 65.2MB in the beginning and 55.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 899.14ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 55.2MB in the beginning and 85.7MB in the end (delta: -30.5MB). There was no memory consumed. 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
- ExceptionOrErrorResult: NullPointerException: null
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
[2021-11-13 17:31:19,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/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
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/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_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/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 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:31:21,759 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:31:21,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:31:21,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:31:21,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:31:21,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:31:21,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:31:21,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:31:21,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:31:21,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:31:21,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:31:21,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:31:21,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:31:21,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:31:21,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:31:21,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:31:21,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:31:21,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:31:21,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:31:21,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:31:21,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:31:21,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:31:21,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:31:21,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:31:21,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:31:21,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:31:21,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:31:21,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:31:21,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:31:21,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:31:21,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:31:21,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:31:21,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:31:21,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:31:21,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:31:21,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:31:21,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:31:21,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:31:21,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:31:21,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:31:21,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:31:21,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-13 17:31:21,924 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:31:21,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:31:21,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:31:21,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:31:21,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:31:21,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:31:21,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:31:21,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:31:21,928 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:31:21,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:31:21,929 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:31:21,929 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:31:21,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:31:21,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:31:21,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:31:21,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:31:21,930 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-13 17:31:21,930 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-13 17:31:21,931 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:31:21,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:31:21,931 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:31:21,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:31:21,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:31:21,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:31:21,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:31:21,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:31:21,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:31:21,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:31:21,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:31:21,934 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-13 17:31:21,934 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-13 17:31:21,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:31:21,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:31:21,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:31:21,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:31:21,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-13 17:31:21,935 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
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_21d06144-7be9-4fcd-8b56-30771600de26/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf
[2021-11-13 17:31:22,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:31:22,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:31:22,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:31:22,344 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:31:22,345 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:31:22,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench/freire2.c
[2021-11-13 17:31:22,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/fbd05c9a8/c91689f704e54a9d8c7ebfc6aec958ac/FLAGa19cab009
[2021-11-13 17:31:23,038 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:31:23,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/sv-benchmarks/c/nla-digbench/freire2.c
[2021-11-13 17:31:23,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/fbd05c9a8/c91689f704e54a9d8c7ebfc6aec958ac/FLAGa19cab009
[2021-11-13 17:31:23,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/data/fbd05c9a8/c91689f704e54a9d8c7ebfc6aec958ac
[2021-11-13 17:31:23,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:31:23,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:31:23,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:31:23,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:31:23,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:31:23,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32dd1af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23, skipping insertion in model container
[2021-11-13 17:31:23,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:31:23,435 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:31:23,629 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_21d06144-7be9-4fcd-8b56-30771600de26/sv-benchmarks/c/nla-digbench/freire2.c[709,722]
[2021-11-13 17:31:23,653 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:31:23,666 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:31:23,691 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_21d06144-7be9-4fcd-8b56-30771600de26/sv-benchmarks/c/nla-digbench/freire2.c[709,722]
[2021-11-13 17:31:23,717 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:31:23,749 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:31:23,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23 WrapperNode
[2021-11-13 17:31:23,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:31:23,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:31:23,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:31:23,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:31:23,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:31:23,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:31:23,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:31:23,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:31:23,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:31:23,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:31:23,893 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:31:23,893 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:31:23,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (1/1) ...
[2021-11-13 17:31:23,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:31:23,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:31:23,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:31:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:31:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-13 17:31:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:31:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:31:23,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:31:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 17:31:23,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 17:31:26,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:31:26,483 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:31:26,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:26 BoogieIcfgContainer
[2021-11-13 17:31:26,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:31:26,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:31:26,488 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:31:26,491 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:31:26,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:23" (1/3) ...
[2021-11-13 17:31:26,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439f1eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:26, skipping insertion in model container
[2021-11-13 17:31:26,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23" (2/3) ...
[2021-11-13 17:31:26,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439f1eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:26, skipping insertion in model container
[2021-11-13 17:31:26,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:26" (3/3) ...
[2021-11-13 17:31:26,494 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c
[2021-11-13 17:31:26,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:31:26,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:31:26,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:31:26,558 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 17:31:26,558 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:31:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 17:31:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:31:26,579 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:26,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:26,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times
[2021-11-13 17:31:26,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:31:26,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401558265]
[2021-11-13 17:31:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:26,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:31:26,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:31:26,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:31:26,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-13 17:31:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:26,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-11-13 17:31:26,798 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:31:26,846 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 17:31:26,846 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:31:26,873 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 17:31:26,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:31:26,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401558265]
[2021-11-13 17:31:26,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401558265] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:31:26,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:31:26,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2021-11-13 17:31:26,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913648000]
[2021-11-13 17:31:26,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:26,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:31:26,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:31:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:31:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:31:26,916 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:31:26,939 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions.
[2021-11-13 17:31:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:31:26,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 17:31:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:31:26,950 INFO L225 Difference]: With dead ends: 38
[2021-11-13 17:31:26,950 INFO L226 Difference]: Without dead ends: 16
[2021-11-13 17:31:26,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 17:31:26,958 INFO L933 BasicCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:31:26,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:31:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2021-11-13 17:31:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2021-11-13 17:31:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:31:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions.
[2021-11-13 17:31:26,999 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7
[2021-11-13 17:31:26,999 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:31:27,000 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions.
[2021-11-13 17:31:27,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions.
[2021-11-13 17:31:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 17:31:27,023 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:31:27,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:31:27,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:31:27,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:31:27,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:31:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:31:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times
[2021-11-13 17:31:27,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:31:27,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184215599]
[2021-11-13 17:31:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:31:27,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:31:27,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:31:27,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:31:27,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-13 17:31:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:31:27,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 17:31:27,402 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:31:27,691 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 17:31:27,692 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:31:37,750 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 17:31:37,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:31:37,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184215599]
[2021-11-13 17:31:37,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184215599] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:31:37,751 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:31:37,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9
[2021-11-13 17:31:37,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184833691]
[2021-11-13 17:31:37,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:31:37,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-13 17:31:37,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:31:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-13 17:31:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:31:37,755 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:31:38,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:40,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:45,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:47,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:49,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:52,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:54,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:56,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:31:58,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:00,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:02,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:05,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:07,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:10,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:12,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:12,029 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions.
[2021-11-13 17:32:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 17:32:12,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 17:32:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:12,144 INFO L225 Difference]: With dead ends: 31
[2021-11-13 17:32:12,144 INFO L226 Difference]: Without dead ends: 29
[2021-11-13 17:32:12,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:32:12,147 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31611.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32026.62ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:12,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 91 Invalid, 43 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 32026.62ms Time]
[2021-11-13 17:32:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-11-13 17:32:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27.
[2021-11-13 17:32:12,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7)
[2021-11-13 17:32:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions.
[2021-11-13 17:32:12,161 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 7
[2021-11-13 17:32:12,161 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions.
[2021-11-13 17:32:12,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:32:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions.
[2021-11-13 17:32:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-11-13 17:32:12,163 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:12,163 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:12,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:32:12,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:32:12,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:32:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:12,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1549807104, now seen corresponding path program 1 times
[2021-11-13 17:32:12,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:32:12,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499363424]
[2021-11-13 17:32:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:12,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:32:12,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:32:12,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:32:12,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-13 17:32:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:13,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 17:32:13,449 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:32:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:16,303 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:32:22,585 WARN L838 $PredicateComparison]: unable to prove that (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from false
[2021-11-13 17:32:24,630 WARN L860 $PredicateComparison]: unable to prove that (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from true
[2021-11-13 17:32:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:47,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:32:47,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499363424]
[2021-11-13 17:32:47,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499363424] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:32:47,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:32:47,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10
[2021-11-13 17:32:47,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779406829]
[2021-11-13 17:32:47,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:47,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:32:47,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:32:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:32:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=56, Unknown=2, NotChecked=14, Total=90
[2021-11-13 17:32:47,318 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:50,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:54,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:54,504 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions.
[2021-11-13 17:32:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 17:32:54,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2021-11-13 17:32:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:54,614 INFO L225 Difference]: With dead ends: 29
[2021-11-13 17:32:54,614 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 17:32:54,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=22, Invalid=70, Unknown=2, NotChecked=16, Total=110
[2021-11-13 17:32:54,616 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6315.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 6483.64ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:54,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 40 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 2 Unknown, 30 Unchecked, 6483.64ms Time]
[2021-11-13 17:32:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 17:32:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-11-13 17:32:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7)
[2021-11-13 17:32:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions.
[2021-11-13 17:32:54,629 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 12
[2021-11-13 17:32:54,630 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:54,630 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions.
[2021-11-13 17:32:54,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions.
[2021-11-13 17:32:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-11-13 17:32:54,632 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:54,632 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:54,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:32:54,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:32:54,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:32:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 888915199, now seen corresponding path program 1 times
[2021-11-13 17:32:54,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:32:54,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401934900]
[2021-11-13 17:32:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:54,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:32:54,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:32:54,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:32:54,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-13 17:32:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:32:56,375 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 17:32:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:32:57,931 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2021-11-13 17:32:57,931 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 17:32:57,932 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:32:57,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:32:58,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:32:58,139 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2021-11-13 17:32:58,142 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:32:58,158 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206)
at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155)
at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:155)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2021-11-13 17:32:58,166 INFO L158 Benchmark]: Toolchain (without parser) took 94762.14ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.9MB in the beginning and 76.4MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:32:58,168 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:32:58,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.74ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 71.6MB in the end (delta: -17.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:32:58,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.73ms. Allocated memory is still 88.1MB. Free memory was 71.6MB in the beginning and 69.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:32:58,170 INFO L158 Benchmark]: Boogie Preprocessor took 63.88ms. Allocated memory is still 88.1MB. Free memory was 69.9MB in the beginning and 68.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:32:58,170 INFO L158 Benchmark]: RCFGBuilder took 2593.09ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 57.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:32:58,171 INFO L158 Benchmark]: TraceAbstraction took 91677.67ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 76.4MB in the end (delta: -19.5MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB.
[2021-11-13 17:32:58,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 348.74ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 71.6MB in the end (delta: -17.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 69.73ms. Allocated memory is still 88.1MB. Free memory was 71.6MB in the beginning and 69.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 63.88ms. Allocated memory is still 88.1MB. Free memory was 69.9MB in the beginning and 68.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 2593.09ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 57.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 91677.67ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 76.4MB in the end (delta: -19.5MB). Peak memory consumption was 2.9MB. 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
- ExceptionOrErrorResult: NullPointerException: null
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
[2021-11-13 17:32:58,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21d06144-7be9-4fcd-8b56-30771600de26/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:
ERROR: ExceptionOrErrorResult: NullPointerException: null