./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.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_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/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_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/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_27fac3df-c083-43b8-83ae-1bfcb0f886c9/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 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:17:30,324 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:17:30,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:17:30,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:17:30,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:17:30,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:17:30,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:17:30,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:17:30,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:17:30,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:17:30,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:17:30,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:17:30,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:17:30,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:17:30,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:17:30,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:17:30,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:17:30,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:17:30,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:17:30,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:17:30,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:17:30,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:17:30,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:17:30,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:17:30,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:17:30,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:17:30,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:17:30,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:17:30,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:17:30,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:17:30,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:17:30,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:17:30,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:17:30,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:17:30,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:17:30,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:17:30,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:17:30,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:17:30,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:17:30,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:17:30,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:17:30,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:17:30,468 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:17:30,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:17:30,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:17:30,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:17:30,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:17:30,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:17:30,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:17:30,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:17:30,472 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:17:30,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:17:30,473 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:17:30,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:17:30,474 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:17:30,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:17:30,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:17:30,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:17:30,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:17:30,475 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:17:30,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:17:30,476 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:17:30,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:17:30,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:17:30,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:17:30,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:17:30,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:17:30,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:17:30,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:17:30,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:17:30,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:17:30,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:17:30,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:17:30,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:17:30,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:17:30,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:17:30,480 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_27fac3df-c083-43b8-83ae-1bfcb0f886c9/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3
[2021-11-13 18:17:30,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:17:30,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:17:30,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:17:30,874 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:17:30,875 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:17:30,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c
[2021-11-13 18:17:31,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/data/dc6b82fb1/6c4ddd3316634cc6aeea9219f1fb970c/FLAG6c10cbeee
[2021-11-13 18:17:31,606 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:17:31,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c
[2021-11-13 18:17:31,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/data/dc6b82fb1/6c4ddd3316634cc6aeea9219f1fb970c/FLAG6c10cbeee
[2021-11-13 18:17:31,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/data/dc6b82fb1/6c4ddd3316634cc6aeea9219f1fb970c
[2021-11-13 18:17:31,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:17:31,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:17:31,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:17:31,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:17:31,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:17:31,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:17:31" (1/1) ...
[2021-11-13 18:17:31,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2447f7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:31, skipping insertion in model container
[2021-11-13 18:17:31,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:17:31" (1/1) ...
[2021-11-13 18:17:31,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:17:32,002 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:17:32,199 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_27fac3df-c083-43b8-83ae-1bfcb0f886c9/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550]
[2021-11-13 18:17:32,227 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:17:32,239 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:17:32,269 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_27fac3df-c083-43b8-83ae-1bfcb0f886c9/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550]
[2021-11-13 18:17:32,293 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:17:32,313 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:17:32,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32 WrapperNode
[2021-11-13 18:17:32,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:17:32,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:17:32,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:17:32,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:17:32,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:17:32,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:17:32,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:17:32,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:17:32,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:17:32,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:17:32,425 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:17:32,426 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:17:32,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (1/1) ...
[2021-11-13 18:17:32,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:17:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:17:32,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:17:32,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:17:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-13 18:17:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-13 18:17:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:17:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:17:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:17:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:17:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 18:17:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 18:17:32,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:17:32,768 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 18:17:32,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:32 BoogieIcfgContainer
[2021-11-13 18:17:32,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:17:32,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:17:32,772 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:17:32,777 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:17:32,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:17:31" (1/3) ...
[2021-11-13 18:17:32,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162ea88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:17:32, skipping insertion in model container
[2021-11-13 18:17:32,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:32" (2/3) ...
[2021-11-13 18:17:32,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162ea88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:17:32, skipping insertion in model container
[2021-11-13 18:17:32,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:32" (3/3) ...
[2021-11-13 18:17:32,781 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c
[2021-11-13 18:17:32,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:17:32,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:17:32,860 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:17:32,869 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 18:17:32,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:17:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:17:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:17:32,913 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:17:32,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:17:32,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:17:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:17:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times
[2021-11-13 18:17:32,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:17:32,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813436149]
[2021-11-13 18:17:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:32,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:17:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 18:17:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 18:17:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-11-13 18:17:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:17:33,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:17:33,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813436149]
[2021-11-13 18:17:33,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813436149] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:17:33,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:17:33,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:17:33,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484494156]
[2021-11-13 18:17:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:17:33,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:17:33,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:17:33,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:17:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:17:33,247 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2021-11-13 18:17:33,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:17:33,274 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions.
[2021-11-13 18:17:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:17:33,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24
[2021-11-13 18:17:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:17:33,285 INFO L225 Difference]: With dead ends: 51
[2021-11-13 18:17:33,285 INFO L226 Difference]: Without dead ends: 23
[2021-11-13 18:17:33,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 18:17:33,295 INFO L933 BasicCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:17:33,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:17:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-11-13 18:17:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-11-13 18:17:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-11-13 18:17:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-11-13 18:17:33,346 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24
[2021-11-13 18:17:33,346 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:17:33,346 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-11-13 18:17:33,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2021-11-13 18:17:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-11-13 18:17:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:17:33,349 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:17:33,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:17:33,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:17:33,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:17:33,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:17:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times
[2021-11-13 18:17:33,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:17:33,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265785866]
[2021-11-13 18:17:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:33,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:17:33,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:17:33,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129667832]
[2021-11-13 18:17:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:33,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:17:33,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:17:33,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:17:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-13 18:17:33,558 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:17:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:17:33,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:17:33,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:17:33,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265785866]
[2021-11-13 18:17:33,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:17:33,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129667832]
[2021-11-13 18:17:33,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129667832] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:17:33,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:17:33,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:17:33,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935296816]
[2021-11-13 18:17:33,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:17:33,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:17:33,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:17:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:17:33,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:17:33,883 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:17:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:17:33,998 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions.
[2021-11-13 18:17:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:17:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24
[2021-11-13 18:17:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:17:34,008 INFO L225 Difference]: With dead ends: 35
[2021-11-13 18:17:34,009 INFO L226 Difference]: Without dead ends: 33
[2021-11-13 18:17:34,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:17:34,013 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.04ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:17:34,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 36 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 64.04ms Time]
[2021-11-13 18:17:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-11-13 18:17:34,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29.
[2021-11-13 18:17:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:17:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2021-11-13 18:17:34,031 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24
[2021-11-13 18:17:34,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:17:34,033 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2021-11-13 18:17:34,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:17:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2021-11-13 18:17:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-11-13 18:17:34,036 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:17:34,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:17:34,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:17:34,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:34,251 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:17:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:17:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times
[2021-11-13 18:17:34,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:17:34,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623575359]
[2021-11-13 18:17:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:34,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:17:34,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:17:34,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269871932]
[2021-11-13 18:17:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:34,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:34,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:17:34,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:17:34,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:17:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:34,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 18:17:34,391 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:17:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:17:34,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:17:34,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:17:34,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623575359]
[2021-11-13 18:17:34,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:17:34,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269871932]
[2021-11-13 18:17:34,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269871932] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:17:34,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:17:34,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:17:34,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220494604]
[2021-11-13 18:17:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:17:34,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 18:17:34,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:17:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 18:17:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:17:34,571 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:17:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:17:34,701 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions.
[2021-11-13 18:17:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:17:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30
[2021-11-13 18:17:34,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:17:34,705 INFO L225 Difference]: With dead ends: 39
[2021-11-13 18:17:34,706 INFO L226 Difference]: Without dead ends: 32
[2021-11-13 18:17:34,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:17:34,710 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.64ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:17:34,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 50 Unknown, 0 Unchecked, 8.97ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 66.64ms Time]
[2021-11-13 18:17:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-11-13 18:17:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2021-11-13 18:17:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 18:17:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2021-11-13 18:17:34,730 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30
[2021-11-13 18:17:34,731 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:17:34,732 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2021-11-13 18:17:34,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:17:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2021-11-13 18:17:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 18:17:34,735 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:17:34,735 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:17:34,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:17:34,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:34,939 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:17:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:17:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times
[2021-11-13 18:17:34,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:17:34,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570038823]
[2021-11-13 18:17:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:34,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:17:34,977 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:17:34,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826536336]
[2021-11-13 18:17:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:34,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:34,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:17:34,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:17:34,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:17:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:35,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-11-13 18:17:35,089 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:17:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:17:36,213 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:17:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-11-13 18:17:45,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:17:45,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570038823]
[2021-11-13 18:17:45,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:17:45,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826536336]
[2021-11-13 18:17:45,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826536336] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:17:45,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:17:45,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11
[2021-11-13 18:17:45,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607449374]
[2021-11-13 18:17:45,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:17:45,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-13 18:17:45,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:17:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-13 18:17:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110
[2021-11-13 18:17:45,999 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2021-11-13 18:17:48,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:17:52,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:17:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:17:58,417 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions.
[2021-11-13 18:17:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 18:17:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33
[2021-11-13 18:17:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:17:58,419 INFO L225 Difference]: With dead ends: 52
[2021-11-13 18:17:58,420 INFO L226 Difference]: Without dead ends: 50
[2021-11-13 18:17:58,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=59, Invalid=177, Unknown=4, NotChecked=0, Total=240
[2021-11-13 18:17:58,421 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3483.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3517.83ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:17:58,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 142 Invalid, 155 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 3517.83ms Time]
[2021-11-13 18:17:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-11-13 18:17:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45.
[2021-11-13 18:17:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.25) internal successors, (40), 33 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2021-11-13 18:17:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions.
[2021-11-13 18:17:58,432 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 33
[2021-11-13 18:17:58,433 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:17:58,433 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions.
[2021-11-13 18:17:58,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2021-11-13 18:17:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions.
[2021-11-13 18:17:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 18:17:58,435 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:17:58,435 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:17:58,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:17:58,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:58,636 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:17:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:17:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times
[2021-11-13 18:17:58,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:17:58,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624847319]
[2021-11-13 18:17:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:58,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:17:58,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:17:58,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994526421]
[2021-11-13 18:17:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:17:58,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:17:58,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:17:58,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:17:58,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:17:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:17:58,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-11-13 18:17:58,714 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:17:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:17:59,877 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:18:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-11-13 18:18:00,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:18:00,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624847319]
[2021-11-13 18:18:00,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:18:00,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994526421]
[2021-11-13 18:18:00,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994526421] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:18:00,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:18:00,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15
[2021-11-13 18:18:00,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166538331]
[2021-11-13 18:18:00,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:18:00,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-11-13 18:18:00,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:18:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-11-13 18:18:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:18:00,599 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2021-11-13 18:18:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:18:01,528 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions.
[2021-11-13 18:18:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-11-13 18:18:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33
[2021-11-13 18:18:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:18:01,531 INFO L225 Difference]: With dead ends: 83
[2021-11-13 18:18:01,531 INFO L226 Difference]: Without dead ends: 76
[2021-11-13 18:18:01,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420
[2021-11-13 18:18:01,533 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 534.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.35ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 573.11ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:18:01,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 126 Invalid, 210 Unknown, 0 Unchecked, 3.35ms Time], IncrementalHoareTripleChecker [28 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 573.11ms Time]
[2021-11-13 18:18:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2021-11-13 18:18:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73.
[2021-11-13 18:18:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 55 states have internal predecessors, (69), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2021-11-13 18:18:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions.
[2021-11-13 18:18:01,548 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 33
[2021-11-13 18:18:01,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:18:01,549 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions.
[2021-11-13 18:18:01,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6)
[2021-11-13 18:18:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions.
[2021-11-13 18:18:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2021-11-13 18:18:01,551 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:18:01,551 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:18:01,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:18:01,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:18:01,774 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:18:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:18:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times
[2021-11-13 18:18:01,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:18:01,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828457431]
[2021-11-13 18:18:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:18:01,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:18:01,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:18:01,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806558650]
[2021-11-13 18:18:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:18:01,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:18:01,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:18:01,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:18:01,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:18:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:18:01,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:18:01,833 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:18:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-11-13 18:18:01,971 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:18:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-11-13 18:18:02,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:18:02,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828457431]
[2021-11-13 18:18:02,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:18:02,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806558650]
[2021-11-13 18:18:02,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806558650] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:18:02,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:18:02,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-11-13 18:18:02,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717135539]
[2021-11-13 18:18:02,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:18:02,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:18:02,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:18:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:18:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:18:02,147 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2021-11-13 18:18:04,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2021-11-13 18:18:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:18:04,242 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions.
[2021-11-13 18:18:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:18:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39
[2021-11-13 18:18:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:18:04,244 INFO L225 Difference]: With dead ends: 82
[2021-11-13 18:18:04,244 INFO L226 Difference]: Without dead ends: 75
[2021-11-13 18:18:04,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-11-13 18:18:04,246 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2056.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2066.25ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:18:04,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 105 Invalid, 65 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 2066.25ms Time]
[2021-11-13 18:18:04,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2021-11-13 18:18:04,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72.
[2021-11-13 18:18:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2021-11-13 18:18:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions.
[2021-11-13 18:18:04,260 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 39
[2021-11-13 18:18:04,260 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:18:04,261 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions.
[2021-11-13 18:18:04,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6)
[2021-11-13 18:18:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions.
[2021-11-13 18:18:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-11-13 18:18:04,263 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:18:04,264 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:18:04,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:18:04,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-13 18:18:04,477 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:18:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:18:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times
[2021-11-13 18:18:04,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:18:04,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480344880]
[2021-11-13 18:18:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:18:04,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:18:04,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:18:04,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018772346]
[2021-11-13 18:18:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:18:04,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:18:04,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:18:04,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:18:04,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:18:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:18:04,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-11-13 18:18:04,554 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:20:19,632 WARN L227 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 18 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2021-11-13 18:22:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2021-11-13 18:22:14,291 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 18:22:22,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:22,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480344880]
[2021-11-13 18:22:22,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:22:22,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018772346]
[2021-11-13 18:22:22,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018772346] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:22:22,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:22:22,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22
[2021-11-13 18:22:22,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858750168]
[2021-11-13 18:22:22,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:22,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-11-13 18:22:22,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-11-13 18:22:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=379, Unknown=2, NotChecked=0, Total=462
[2021-11-13 18:22:22,287 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8)
[2021-11-13 18:22:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:36,969 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions.
[2021-11-13 18:22:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2021-11-13 18:22:36,970 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 51
[2021-11-13 18:22:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:36,973 INFO L225 Difference]: With dead ends: 104
[2021-11-13 18:22:36,973 INFO L226 Difference]: Without dead ends: 102
[2021-11-13 18:22:36,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=165, Invalid=824, Unknown=3, NotChecked=0, Total=992
[2021-11-13 18:22:36,976 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3795.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 3834.37ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:36,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 201 Invalid, 275 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [26 Valid, 223 Invalid, 0 Unknown, 26 Unchecked, 3834.37ms Time]
[2021-11-13 18:22:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2021-11-13 18:22:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89.
[2021-11-13 18:22:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.164179104477612) internal successors, (78), 68 states have internal predecessors, (78), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14)
[2021-11-13 18:22:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions.
[2021-11-13 18:22:36,996 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 51
[2021-11-13 18:22:36,996 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:36,997 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions.
[2021-11-13 18:22:36,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8)
[2021-11-13 18:22:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions.
[2021-11-13 18:22:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 18:22:37,000 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:37,000 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:37,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:37,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:37,214 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1307593476, now seen corresponding path program 2 times
[2021-11-13 18:22:37,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:37,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111222999]
[2021-11-13 18:22:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:37,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:37,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:22:37,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505115705]
[2021-11-13 18:22:37,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:22:37,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:37,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:37,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:37,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 18:22:37,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:22:37,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:22:37,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core
[2021-11-13 18:22:37,312 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2021-11-13 18:22:45,272 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:48,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:48,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111222999]
[2021-11-13 18:22:48,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:22:48,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505115705]
[2021-11-13 18:22:48,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505115705] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:22:48,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:22:48,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2021-11-13 18:22:48,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012333953]
[2021-11-13 18:22:48,201 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:48,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-13 18:22:48,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-13 18:22:48,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552
[2021-11-13 18:22:48,202 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2021-11-13 18:22:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:49,170 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions.
[2021-11-13 18:22:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-11-13 18:22:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 60
[2021-11-13 18:22:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:49,172 INFO L225 Difference]: With dead ends: 111
[2021-11-13 18:22:49,172 INFO L226 Difference]: Without dead ends: 109
[2021-11-13 18:22:49,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650
[2021-11-13 18:22:49,174 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 864.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 918.05ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:49,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 300 Invalid, 418 Unknown, 0 Unchecked, 3.50ms Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 918.05ms Time]
[2021-11-13 18:22:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2021-11-13 18:22:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106.
[2021-11-13 18:22:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.1625) internal successors, (93), 82 states have internal predecessors, (93), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17)
[2021-11-13 18:22:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions.
[2021-11-13 18:22:49,191 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 60
[2021-11-13 18:22:49,191 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:49,191 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions.
[2021-11-13 18:22:49,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)
[2021-11-13 18:22:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions.
[2021-11-13 18:22:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 18:22:49,194 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:49,194 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:49,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:49,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2021-11-13 18:22:49,422 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 602841912, now seen corresponding path program 3 times
[2021-11-13 18:22:49,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:49,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931440117]
[2021-11-13 18:22:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:49,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:49,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:22:49,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15554293]
[2021-11-13 18:22:49,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:22:49,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:49,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:49,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-13 18:22:49,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-11-13 18:22:49,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:22:49,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-11-13 18:22:49,513 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 42 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2021-11-13 18:22:51,153 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2021-11-13 18:22:52,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:52,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931440117]
[2021-11-13 18:22:52,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:22:52,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15554293]
[2021-11-13 18:22:52,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15554293] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:22:52,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:22:52,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19
[2021-11-13 18:22:52,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363613118]
[2021-11-13 18:22:52,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:52,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-11-13 18:22:52,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-11-13 18:22:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342
[2021-11-13 18:22:52,370 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)
[2021-11-13 18:22:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:53,244 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions.
[2021-11-13 18:22:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2021-11-13 18:22:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60
[2021-11-13 18:22:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:53,259 INFO L225 Difference]: With dead ends: 121
[2021-11-13 18:22:53,259 INFO L226 Difference]: Without dead ends: 49
[2021-11-13 18:22:53,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650
[2021-11-13 18:22:53,263 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 366.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 382.21ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:53,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 162 Invalid, 147 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [15 Valid, 125 Invalid, 0 Unknown, 7 Unchecked, 382.21ms Time]
[2021-11-13 18:22:53,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-11-13 18:22:53,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47.
[2021-11-13 18:22:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8)
[2021-11-13 18:22:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2021-11-13 18:22:53,275 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 60
[2021-11-13 18:22:53,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:53,276 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2021-11-13 18:22:53,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)
[2021-11-13 18:22:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2021-11-13 18:22:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2021-11-13 18:22:53,287 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:53,287 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:53,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:53,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:53,502 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times
[2021-11-13 18:22:53,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:53,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308650797]
[2021-11-13 18:22:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:53,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:53,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:22:53,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745067005]
[2021-11-13 18:22:53,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:22:53,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:53,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:53,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:53,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-11-13 18:22:53,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:22:53,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:22:53,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 45 conjunts are in the unsatisfiable core
[2021-11-13 18:22:53,569 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2021-11-13 18:22:56,086 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:23:03,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:03,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308650797]
[2021-11-13 18:23:03,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:23:03,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745067005]
[2021-11-13 18:23:03,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745067005] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:23:03,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:23:03,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2021-11-13 18:23:03,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041718107]
[2021-11-13 18:23:03,472 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:03,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-11-13 18:23:03,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-11-13 18:23:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650
[2021-11-13 18:23:03,474 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2021-11-13 18:23:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:04,130 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions.
[2021-11-13 18:23:04,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-11-13 18:23:04,131 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 60
[2021-11-13 18:23:04,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:04,132 INFO L225 Difference]: With dead ends: 61
[2021-11-13 18:23:04,132 INFO L226 Difference]: Without dead ends: 59
[2021-11-13 18:23:04,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812
[2021-11-13 18:23:04,133 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 450.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 509.18ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:04,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 196 Invalid, 391 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [20 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 509.18ms Time]
[2021-11-13 18:23:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2021-11-13 18:23:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56.
[2021-11-13 18:23:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.024390243902439) internal successors, (42), 42 states have internal predecessors, (42), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2021-11-13 18:23:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions.
[2021-11-13 18:23:04,144 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 60
[2021-11-13 18:23:04,145 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:04,145 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions.
[2021-11-13 18:23:04,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2021-11-13 18:23:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions.
[2021-11-13 18:23:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2021-11-13 18:23:04,146 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:04,147 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:23:04,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:04,358 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2008487185, now seen corresponding path program 3 times
[2021-11-13 18:23:04,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:04,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395763804]
[2021-11-13 18:23:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:04,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:04,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:23:04,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81815008]
[2021-11-13 18:23:04,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:23:04,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:04,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:04,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:04,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-11-13 18:23:04,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2021-11-13 18:23:04,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:23:04,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-11-13 18:23:04,435 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 18:23:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:23:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-13 18:23:11,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:11,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395763804]
[2021-11-13 18:23:11,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:23:11,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81815008]
[2021-11-13 18:23:11,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81815008] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:23:11,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:23:11,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 35
[2021-11-13 18:23:11,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511698680]
[2021-11-13 18:23:11,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:11,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2021-11-13 18:23:11,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-11-13 18:23:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190
[2021-11-13 18:23:11,886 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15)
[2021-11-13 18:23:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:17,617 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions.
[2021-11-13 18:23:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-11-13 18:23:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 69
[2021-11-13 18:23:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:17,619 INFO L225 Difference]: With dead ends: 64
[2021-11-13 18:23:17,619 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 18:23:17,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=624, Invalid=2238, Unknown=0, NotChecked=0, Total=2862
[2021-11-13 18:23:17,622 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 578.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 622.87ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:17,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 164 Invalid, 349 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [56 Valid, 266 Invalid, 0 Unknown, 27 Unchecked, 622.87ms Time]
[2021-11-13 18:23:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 18:23:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 18:23:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:23:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 18:23:17,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69
[2021-11-13 18:23:17,624 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 18:23:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 32 states have internal predecessors, (66), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15)
[2021-11-13 18:23:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 18:23:17,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 18:23:17,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 18:23:17,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:17,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:17,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 18:23:21,336 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 18:23:21,336 INFO L861 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true
[2021-11-13 18:23:21,336 INFO L854 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 50))
[2021-11-13 18:23:21,336 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true
[2021-11-13 18:23:21,336 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed.
[2021-11-13 18:23:21,337 INFO L861 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true
[2021-11-13 18:23:21,337 INFO L858 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed.
[2021-11-13 18:23:21,337 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~b~0#1| 50)) (and .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) .cse1 (< 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))))
[2021-11-13 18:23:21,337 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 18:23:21,337 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~z~0#1| .cse0) (or (= (+ (* 2 (* |ULTIMATE.start_main_~x~0#1| (div (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 2))) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (< (mod |ULTIMATE.start_main_~y~0#1| 2) 1) (< |ULTIMATE.start_main_~y~0#1| 0))))
[2021-11-13 18:23:21,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 18:23:21,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 18:23:21,337 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed.
[2021-11-13 18:23:21,337 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed.
[2021-11-13 18:23:21,338 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed.
[2021-11-13 18:23:21,338 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~b~0#1| 50)) (and .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) .cse1 (< 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))))
[2021-11-13 18:23:21,338 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed.
[2021-11-13 18:23:21,338 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true
[2021-11-13 18:23:21,338 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed.
[2021-11-13 18:23:21,338 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed.
[2021-11-13 18:23:21,338 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed.
[2021-11-13 18:23:21,338 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true
[2021-11-13 18:23:21,338 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed.
[2021-11-13 18:23:21,339 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed.
[2021-11-13 18:23:21,339 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed.
[2021-11-13 18:23:21,339 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed.
[2021-11-13 18:23:21,339 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2021-11-13 18:23:21,342 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1]
[2021-11-13 18:23:21,343 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:23:21,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:23:21 BoogieIcfgContainer
[2021-11-13 18:23:21,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:23:21,371 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:23:21,371 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:23:21,372 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:23:21,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:32" (3/4) ...
[2021-11-13 18:23:21,375 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 18:23:21,382 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not
[2021-11-13 18:23:21,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2021-11-13 18:23:21,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2021-11-13 18:23:21,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-11-13 18:23:21,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 18:23:21,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 18:23:21,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:23:21,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:23:21,430 INFO L158 Benchmark]: Toolchain (without parser) took 349476.43ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 59.2MB in the beginning and 57.2MB in the end (delta: 2.0MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,430 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 100.7MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:23:21,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.13ms. Allocated memory is still 100.7MB. Free memory was 59.0MB in the beginning and 75.1MB in the end (delta: -16.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.64ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,431 INFO L158 Benchmark]: Boogie Preprocessor took 55.07ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 72.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,432 INFO L158 Benchmark]: RCFGBuilder took 346.24ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 62.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,432 INFO L158 Benchmark]: TraceAbstraction took 348598.39ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 62.1MB in the beginning and 59.3MB in the end (delta: 2.8MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,432 INFO L158 Benchmark]: Witness Printer took 58.57ms. Allocated memory is still 130.0MB. Free memory was 59.3MB in the beginning and 57.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:23:21,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.42ms. Allocated memory is still 100.7MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 358.13ms. Allocated memory is still 100.7MB. Free memory was 59.0MB in the beginning and 75.1MB in the end (delta: -16.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 49.64ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 55.07ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 72.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 346.24ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 62.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 348598.39ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 62.1MB in the beginning and 59.3MB in the end (delta: 2.8MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB.
* Witness Printer took 58.57ms. Allocated memory is still 130.0MB. Free memory was 59.3MB in the beginning and 57.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 15]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 348.5s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 38.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 12554.56ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 1584 SdHoareTripleChecker+Invalid, 12232.27ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 60 IncrementalHoareTripleChecker+Unchecked, 1348 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1867 IncrementalHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 236 mSDtfsCounter, 1867 mSolverCounterSat, 46.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 840 GetRequests, 610 SyntacticMatches, 20 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 56.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=8, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 38 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 35 PreInvPairs, 71 NumberOfFragments, 132 HoareAnnotationTreeSize, 35 FomulaSimplifications, 189 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 2651 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 302.6s InterpolantComputationTime, 483 NumberOfCodeBlocks, 474 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 751 ConstructedInterpolants, 6 QuantifiedInterpolants, 7327 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 581/822 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 34]: Loop Invariant
Derived loop invariant: (((0 <= y && 1 <= b) && y * x + z == a * b) && b <= 50) || (((1 <= b && x % 2 == 0) && y * x + z == a * b) && 0 < y + 1)
- InvariantResult [Line: 20]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2021-11-13 18:23:21,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27fac3df-c083-43b8-83ae-1bfcb0f886c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE