./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s42if.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_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/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_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s42if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/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_a701fddd-4613-4b28-8569-89e751135be7/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 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:22:39,355 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:22:39,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:22:39,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:22:39,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:22:39,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:22:39,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:22:39,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:22:39,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:22:39,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:22:39,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:22:39,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:22:39,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:22:39,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:22:39,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:22:39,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:22:39,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:22:39,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:22:39,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:22:39,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:22:39,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:22:39,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:22:39,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:22:39,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:22:39,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:22:39,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:22:39,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:22:39,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:22:39,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:22:39,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:22:39,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:22:39,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:22:39,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:22:39,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:22:39,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:22:39,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:22:39,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:22:39,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:22:39,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:22:39,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:22:39,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:22:39,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:22:39,547 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:22:39,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:22:39,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:22:39,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:22:39,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:22:39,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:22:39,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:22:39,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:22:39,557 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:22:39,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:22:39,558 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:22:39,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:22:39,559 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:22:39,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:22:39,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:22:39,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:22:39,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:22:39,560 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:22:39,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:22:39,560 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:22:39,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:22:39,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:22:39,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:22:39,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:22:39,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:22:39,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:22:39,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:22:39,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:22:39,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:22:39,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:22:39,564 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:22:39,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:22:39,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:22:39,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:22:39,565 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_a701fddd-4613-4b28-8569-89e751135be7/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a
[2021-11-13 18:22:39,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:22:39,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:22:39,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:22:39,861 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:22:39,863 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:22:39,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-fpi/s42if.c
[2021-11-13 18:22:39,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/d4b1826fe/eb4ea0bf9b7742ddb3bde27432cda240/FLAGd4622d526
[2021-11-13 18:22:40,413 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:22:40,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/sv-benchmarks/c/array-fpi/s42if.c
[2021-11-13 18:22:40,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/d4b1826fe/eb4ea0bf9b7742ddb3bde27432cda240/FLAGd4622d526
[2021-11-13 18:22:40,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/d4b1826fe/eb4ea0bf9b7742ddb3bde27432cda240
[2021-11-13 18:22:40,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:22:40,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:22:40,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:22:40,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:22:40,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:22:40,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:22:40" (1/1) ...
[2021-11-13 18:22:40,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bf2242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:40, skipping insertion in model container
[2021-11-13 18:22:40,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:22:40" (1/1) ...
[2021-11-13 18:22:40,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:22:40,843 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:22:41,020 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_a701fddd-4613-4b28-8569-89e751135be7/sv-benchmarks/c/array-fpi/s42if.c[588,601]
[2021-11-13 18:22:41,037 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:22:41,044 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:22:41,055 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_a701fddd-4613-4b28-8569-89e751135be7/sv-benchmarks/c/array-fpi/s42if.c[588,601]
[2021-11-13 18:22:41,065 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:22:41,077 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:22:41,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41 WrapperNode
[2021-11-13 18:22:41,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:22:41,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:22:41,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:22:41,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:22:41,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:22:41,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:22:41,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:22:41,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:22:41,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:22:41,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:22:41,180 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:22:41,180 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:22:41,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (1/1) ...
[2021-11-13 18:22:41,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:22:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:41,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:22:41,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:22:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:22:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:22:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 18:22:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-13 18:22:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:22:41,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:22:41,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 18:22:41,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 18:22:41,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:22:41,590 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-11-13 18:22:41,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:41 BoogieIcfgContainer
[2021-11-13 18:22:41,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:22:41,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:22:41,594 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:22:41,597 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:22:41,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:22:40" (1/3) ...
[2021-11-13 18:22:41,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82727ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:41, skipping insertion in model container
[2021-11-13 18:22:41,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:41" (2/3) ...
[2021-11-13 18:22:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82727ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:41, skipping insertion in model container
[2021-11-13 18:22:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:41" (3/3) ...
[2021-11-13 18:22:41,600 INFO L111 eAbstractionObserver]: Analyzing ICFG s42if.c
[2021-11-13 18:22:41,608 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:22:41,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:22:41,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:22:41,662 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 18:22:41,662 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:22:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 18:22:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 18:22:41,682 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:41,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:41,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times
[2021-11-13 18:22:41,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:41,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513305930]
[2021-11-13 18:22:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:41,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:22:41,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:41,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513305930]
[2021-11-13 18:22:41,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513305930] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:22:41,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:22:41,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:22:41,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747078467]
[2021-11-13 18:22:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:22:41,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:22:41,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:22:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:22:41,896 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:41,913 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions.
[2021-11-13 18:22:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:22:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-13 18:22:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:41,924 INFO L225 Difference]: With dead ends: 42
[2021-11-13 18:22:41,924 INFO L226 Difference]: Without dead ends: 19
[2021-11-13 18:22:41,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:22:41,931 INFO L933 BasicCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:41,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:22:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-11-13 18:22:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-11-13 18:22:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2021-11-13 18:22:41,966 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13
[2021-11-13 18:22:41,966 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:41,966 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2021-11-13 18:22:41,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2021-11-13 18:22:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 18:22:41,968 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:41,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:41,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:22:41,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times
[2021-11-13 18:22:41,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:41,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9793407]
[2021-11-13 18:22:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:41,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:22:42,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9793407]
[2021-11-13 18:22:42,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9793407] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:22:42,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:22:42,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 18:22:42,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053879577]
[2021-11-13 18:22:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:22:42,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:22:42,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:22:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:22:42,055 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:42,120 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions.
[2021-11-13 18:22:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:22:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-13 18:22:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:42,122 INFO L225 Difference]: With dead ends: 39
[2021-11-13 18:22:42,122 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 18:22:42,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:22:42,125 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.62ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:42,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 11 Invalid, 39 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 52.62ms Time]
[2021-11-13 18:22:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 18:22:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22.
[2021-11-13 18:22:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2021-11-13 18:22:42,133 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13
[2021-11-13 18:22:42,133 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:42,134 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2021-11-13 18:22:42,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2021-11-13 18:22:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 18:22:42,135 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:42,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:42,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 18:22:42,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times
[2021-11-13 18:22:42,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:42,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574813251]
[2021-11-13 18:22:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:42,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:42,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:42,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574813251]
[2021-11-13 18:22:42,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574813251] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:22:42,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217295989]
[2021-11-13 18:22:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:42,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:42,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:42,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:22:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:42,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-11-13 18:22:42,793 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:42,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-11-13 18:22:42,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:22:43,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22
[2021-11-13 18:22:43,399 INFO L354 Elim1Store]: treesize reduction 34, result has 48.5 percent of original size
[2021-11-13 18:22:43,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 66
[2021-11-13 18:22:43,897 INFO L354 Elim1Store]: treesize reduction 124, result has 15.6 percent of original size
[2021-11-13 18:22:43,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 57
[2021-11-13 18:22:45,443 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size
[2021-11-13 18:22:45,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 64
[2021-11-13 18:22:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:22:45,495 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:55,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|]
[2021-11-13 18:22:55,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:22:55,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2021-11-13 18:22:55,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509098501]
[2021-11-13 18:22:55,959 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:22:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:22:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=335, Unknown=5, NotChecked=0, Total=420
[2021-11-13 18:22:55,962 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:56,539 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions.
[2021-11-13 18:22:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2021-11-13 18:22:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-13 18:22:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:56,543 INFO L225 Difference]: With dead ends: 57
[2021-11-13 18:22:56,543 INFO L226 Difference]: Without dead ends: 53
[2021-11-13 18:22:56,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=156, Invalid=651, Unknown=5, NotChecked=0, Total=812
[2021-11-13 18:22:56,545 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.66ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 222.55ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:56,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 35 Invalid, 195 Unknown, 0 Unchecked, 4.66ms Time], IncrementalHoareTripleChecker [39 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 222.55ms Time]
[2021-11-13 18:22:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2021-11-13 18:22:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35.
[2021-11-13 18:22:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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 18:22:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions.
[2021-11-13 18:22:56,555 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21
[2021-11-13 18:22:56,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:56,555 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions.
[2021-11-13 18:22:56,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions.
[2021-11-13 18:22:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 18:22:56,557 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:56,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:56,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:56,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2021-11-13 18:22:56,758 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times
[2021-11-13 18:22:56,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:56,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598909689]
[2021-11-13 18:22:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:56,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:56,791 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:22:56,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143705926]
[2021-11-13 18:22:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:56,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:56,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:56,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:22:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:56,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-13 18:22:56,852 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:56,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-11-13 18:22:56,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2021-11-13 18:22:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:57,020 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:57,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31
[2021-11-13 18:22:57,114 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size
[2021-11-13 18:22:57,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30
[2021-11-13 18:22:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:57,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:57,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598909689]
[2021-11-13 18:22:57,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:22:57,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143705926]
[2021-11-13 18:22:57,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143705926] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:22:57,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:22:57,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12
[2021-11-13 18:22:57,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890932094]
[2021-11-13 18:22:57,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:57,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-11-13 18:22:57,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-11-13 18:22:57,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2021-11-13 18:22:57,151 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:57,382 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions.
[2021-11-13 18:22:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:22:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-13 18:22:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:57,384 INFO L225 Difference]: With dead ends: 75
[2021-11-13 18:22:57,384 INFO L226 Difference]: Without dead ends: 63
[2021-11-13 18:22:57,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:22:57,386 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.07ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:57,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 59 Invalid, 165 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [22 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 171.07ms Time]
[2021-11-13 18:22:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2021-11-13 18:22:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47.
[2021-11-13 18:22:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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 18:22:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions.
[2021-11-13 18:22:57,402 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21
[2021-11-13 18:22:57,402 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:57,402 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions.
[2021-11-13 18:22:57,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions.
[2021-11-13 18:22:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 18:22:57,405 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:57,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:57,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:57,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:57,624 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1592625659, now seen corresponding path program 1 times
[2021-11-13 18:22:57,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:57,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341998125]
[2021-11-13 18:22:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:57,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:57,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:22:57,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652982958]
[2021-11-13 18:22:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:57,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:57,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:57,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:57,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:22:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:57,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:22:57,702 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:57,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:22:57,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2021-11-13 18:22:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:57,816 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:57,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12
[2021-11-13 18:22:57,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20
[2021-11-13 18:22:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:57,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:57,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341998125]
[2021-11-13 18:22:57,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:22:57,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652982958]
[2021-11-13 18:22:57,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652982958] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:22:57,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:22:57,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9
[2021-11-13 18:22:57,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197988639]
[2021-11-13 18:22:57,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:57,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-13 18:22:57,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:57,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-13 18:22:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2021-11-13 18:22:57,900 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 18:22:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:58,027 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions.
[2021-11-13 18:22:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 18:22:58,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-13 18:22:58,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:58,029 INFO L225 Difference]: With dead ends: 78
[2021-11-13 18:22:58,029 INFO L226 Difference]: Without dead ends: 57
[2021-11-13 18:22:58,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:22:58,031 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.45ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:58,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 93 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [9 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 95.45ms Time]
[2021-11-13 18:22:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2021-11-13 18:22:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49.
[2021-11-13 18:22:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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 18:22:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions.
[2021-11-13 18:22:58,038 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21
[2021-11-13 18:22:58,039 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:58,039 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions.
[2021-11-13 18:22:58,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 18:22:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions.
[2021-11-13 18:22:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-11-13 18:22:58,044 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:58,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:58,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:58,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:58,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:58,246 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times
[2021-11-13 18:22:58,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:58,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426607425]
[2021-11-13 18:22:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:58,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:58,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:58,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426607425]
[2021-11-13 18:22:58,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426607425] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:22:58,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585765945]
[2021-11-13 18:22:58,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:22:58,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:58,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:58,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:58,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:22:58,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:22:58,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:22:58,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 18:22:58,379 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:58,493 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:58,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585765945] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:22:58,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:22:58,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2021-11-13 18:22:58,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099979111]
[2021-11-13 18:22:58,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:58,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-13 18:22:58,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-13 18:22:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:22:58,576 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:58,843 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions.
[2021-11-13 18:22:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:22:58,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2021-11-13 18:22:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:58,846 INFO L225 Difference]: With dead ends: 85
[2021-11-13 18:22:58,846 INFO L226 Difference]: Without dead ends: 75
[2021-11-13 18:22:58,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:22:58,847 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.10ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:58,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 34 Invalid, 246 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [23 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 207.10ms Time]
[2021-11-13 18:22:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2021-11-13 18:22:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53.
[2021-11-13 18:22:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 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 18:22:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions.
[2021-11-13 18:22:58,870 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23
[2021-11-13 18:22:58,870 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:58,871 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions.
[2021-11-13 18:22:58,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:22:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions.
[2021-11-13 18:22:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:22:58,873 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:58,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:58,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:59,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-13 18:22:59,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times
[2021-11-13 18:22:59,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:59,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472631935]
[2021-11-13 18:22:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:59,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:22:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:59,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:22:59,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472631935]
[2021-11-13 18:22:59,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472631935] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:22:59,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491207710]
[2021-11-13 18:22:59,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:22:59,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:22:59,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:22:59,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:22:59,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:22:59,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-11-13 18:22:59,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:22:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 18:22:59,235 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:22:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:59,334 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:22:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:22:59,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491207710] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:22:59,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:22:59,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11
[2021-11-13 18:22:59,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971098677]
[2021-11-13 18:22:59,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:22:59,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-13 18:22:59,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:22:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-13 18:22:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:22:59,405 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 18:22:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:22:59,548 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions.
[2021-11-13 18:22:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:22:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-11-13 18:22:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:22:59,551 INFO L225 Difference]: With dead ends: 78
[2021-11-13 18:22:59,552 INFO L226 Difference]: Without dead ends: 42
[2021-11-13 18:22:59,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:22:59,553 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.01ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:22:59,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 27 Invalid, 134 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [20 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 113.01ms Time]
[2021-11-13 18:22:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2021-11-13 18:22:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36.
[2021-11-13 18:22:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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 18:22:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions.
[2021-11-13 18:22:59,559 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24
[2021-11-13 18:22:59,559 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:22:59,559 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions.
[2021-11-13 18:22:59,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 18:22:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions.
[2021-11-13 18:22:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-11-13 18:22:59,568 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:22:59,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:22:59,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:22:59,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-11-13 18:22:59,787 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:22:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:22:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times
[2021-11-13 18:22:59,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:22:59,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916537294]
[2021-11-13 18:22:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:22:59,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:22:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 18:23:00,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:00,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916537294]
[2021-11-13 18:23:00,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916537294] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:23:00,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367280443]
[2021-11-13 18:23:00,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-11-13 18:23:00,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:00,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:00,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:00,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:23:00,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-11-13 18:23:00,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:23:00,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-11-13 18:23:00,336 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:00,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-11-13 18:23:00,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:23:00,372 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:23:00,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22
[2021-11-13 18:23:00,484 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2021-11-13 18:23:00,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32
[2021-11-13 18:23:00,782 INFO L354 Elim1Store]: treesize reduction 62, result has 44.1 percent of original size
[2021-11-13 18:23:00,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 78
[2021-11-13 18:23:01,104 INFO L354 Elim1Store]: treesize reduction 62, result has 44.1 percent of original size
[2021-11-13 18:23:01,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 91
[2021-11-13 18:23:02,064 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size
[2021-11-13 18:23:02,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 83
[2021-11-13 18:23:02,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|]
[2021-11-13 18:23:02,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:23:02,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2021-11-13 18:23:02,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867444647]
[2021-11-13 18:23:02,305 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:02,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-11-13 18:23:02,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-11-13 18:23:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552
[2021-11-13 18:23:02,308 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:23:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:03,244 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions.
[2021-11-13 18:23:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-11-13 18:23:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29
[2021-11-13 18:23:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:03,246 INFO L225 Difference]: With dead ends: 86
[2021-11-13 18:23:03,246 INFO L226 Difference]: Without dead ends: 82
[2021-11-13 18:23:03,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482
[2021-11-13 18:23:03,248 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 399.83ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:03,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 85 Invalid, 460 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [76 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 399.83ms Time]
[2021-11-13 18:23:03,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2021-11-13 18:23:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65.
[2021-11-13 18:23:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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 18:23:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions.
[2021-11-13 18:23:03,258 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 29
[2021-11-13 18:23:03,258 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:03,258 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions.
[2021-11-13 18:23:03,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:23:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions.
[2021-11-13 18:23:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-11-13 18:23:03,260 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:03,260 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:23:03,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:03,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:03,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times
[2021-11-13 18:23:03,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:03,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327889808]
[2021-11-13 18:23:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:03,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:03,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:23:03,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164721908]
[2021-11-13 18:23:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:03,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:03,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:03,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:03,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 18:23:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:03,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-11-13 18:23:03,573 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:03,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-11-13 18:23:03,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2021-11-13 18:23:03,774 INFO L354 Elim1Store]: treesize reduction 114, result has 15.6 percent of original size
[2021-11-13 18:23:03,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 37
[2021-11-13 18:23:03,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2021-11-13 18:23:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-13 18:23:03,836 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:23:11,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 18:23:11,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 574 treesize of output 524
[2021-11-13 18:23:13,927 INFO L354 Elim1Store]: treesize reduction 26, result has 61.2 percent of original size
[2021-11-13 18:23:13,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 150
[2021-11-13 18:23:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-13 18:23:14,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:14,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327889808]
[2021-11-13 18:23:14,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:23:14,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164721908]
[2021-11-13 18:23:14,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164721908] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:23:14,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:23:14,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16
[2021-11-13 18:23:14,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806932622]
[2021-11-13 18:23:14,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:14,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-11-13 18:23:14,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:14,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-11-13 18:23:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=188, Unknown=5, NotChecked=0, Total=240
[2021-11-13 18:23:14,142 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 18:23:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:14,357 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions.
[2021-11-13 18:23:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:23:14,357 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29
[2021-11-13 18:23:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:14,358 INFO L225 Difference]: With dead ends: 113
[2021-11-13 18:23:14,358 INFO L226 Difference]: Without dead ends: 106
[2021-11-13 18:23:14,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=65, Invalid=236, Unknown=5, NotChecked=0, Total=306
[2021-11-13 18:23:14,360 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 176.91ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:14,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 86 Invalid, 353 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [34 Valid, 220 Invalid, 0 Unknown, 99 Unchecked, 176.91ms Time]
[2021-11-13 18:23:14,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2021-11-13 18:23:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 81.
[2021-11-13 18:23:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.275) internal successors, (102), 80 states have internal predecessors, (102), 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 18:23:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions.
[2021-11-13 18:23:14,375 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 29
[2021-11-13 18:23:14,376 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:14,376 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions.
[2021-11-13 18:23:14,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 18:23:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions.
[2021-11-13 18:23:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-11-13 18:23:14,377 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:14,377 INFO L514 BasicCegarLoop]: trace histogram [2, 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 18:23:14,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:14,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:14,591 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:14,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times
[2021-11-13 18:23:14,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:14,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954698922]
[2021-11-13 18:23:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:14,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:14,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:23:14,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668737497]
[2021-11-13 18:23:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:14,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:14,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:14,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:14,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-13 18:23:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:14,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-11-13 18:23:14,673 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:14,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2021-11-13 18:23:14,758 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size
[2021-11-13 18:23:14,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26
[2021-11-13 18:23:14,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2021-11-13 18:23:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:14,823 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:23:14,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14
[2021-11-13 18:23:14,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24
[2021-11-13 18:23:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:14,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:14,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954698922]
[2021-11-13 18:23:14,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:23:14,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668737497]
[2021-11-13 18:23:14,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668737497] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:23:14,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:23:14,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2021-11-13 18:23:14,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044803097]
[2021-11-13 18:23:14,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:14,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:23:14,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:23:14,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:23:14,949 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:23:15,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:15,123 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions.
[2021-11-13 18:23:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:23:15,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29
[2021-11-13 18:23:15,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:15,124 INFO L225 Difference]: With dead ends: 123
[2021-11-13 18:23:15,124 INFO L226 Difference]: Without dead ends: 92
[2021-11-13 18:23:15,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:23:15,126 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.21ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:15,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 182 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [12 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 136.21ms Time]
[2021-11-13 18:23:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2021-11-13 18:23:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81.
[2021-11-13 18:23:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 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 18:23:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions.
[2021-11-13 18:23:15,141 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 29
[2021-11-13 18:23:15,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:15,141 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions.
[2021-11-13 18:23:15,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:23:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions.
[2021-11-13 18:23:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-11-13 18:23:15,142 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:15,143 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:23:15,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:15,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-11-13 18:23:15,359 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times
[2021-11-13 18:23:15,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:15,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703644756]
[2021-11-13 18:23:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:15,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:15,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:15,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703644756]
[2021-11-13 18:23:15,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703644756] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:23:15,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656620208]
[2021-11-13 18:23:15,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-11-13 18:23:15,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:15,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:15,445 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:15,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-11-13 18:23:15,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2021-11-13 18:23:15,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:23:15,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-13 18:23:15,501 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:15,645 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:23:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:15,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656620208] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:23:15,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:23:15,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14
[2021-11-13 18:23:15,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993799551]
[2021-11-13 18:23:15,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:15,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-13 18:23:15,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-13 18:23:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182
[2021-11-13 18:23:15,748 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 18:23:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:16,069 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions.
[2021-11-13 18:23:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 18:23:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31
[2021-11-13 18:23:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:16,070 INFO L225 Difference]: With dead ends: 115
[2021-11-13 18:23:16,070 INFO L226 Difference]: Without dead ends: 102
[2021-11-13 18:23:16,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380
[2021-11-13 18:23:16,072 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.47ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:16,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 34 Invalid, 301 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [31 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 246.47ms Time]
[2021-11-13 18:23:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2021-11-13 18:23:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80.
[2021-11-13 18:23:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 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 18:23:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions.
[2021-11-13 18:23:16,095 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 31
[2021-11-13 18:23:16,096 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:16,096 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions.
[2021-11-13 18:23:16,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 18:23:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions.
[2021-11-13 18:23:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-11-13 18:23:16,101 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:16,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:23:16,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:16,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:16,327 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times
[2021-11-13 18:23:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:16,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060815782]
[2021-11-13 18:23:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:16,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:16,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:16,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060815782]
[2021-11-13 18:23:16,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060815782] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:23:16,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474043556]
[2021-11-13 18:23:16,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-11-13 18:23:16,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:16,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:16,452 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:16,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-11-13 18:23:16,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2021-11-13 18:23:16,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:23:16,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-13 18:23:16,525 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:16,673 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:23:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-13 18:23:16,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474043556] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:23:16,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:23:16,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14
[2021-11-13 18:23:16,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596583208]
[2021-11-13 18:23:16,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:16,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-13 18:23:16,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-13 18:23:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182
[2021-11-13 18:23:16,770 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 18:23:16,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:16,971 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions.
[2021-11-13 18:23:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 18:23:16,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2021-11-13 18:23:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:16,972 INFO L225 Difference]: With dead ends: 103
[2021-11-13 18:23:16,972 INFO L226 Difference]: Without dead ends: 50
[2021-11-13 18:23:16,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272
[2021-11-13 18:23:16,973 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 89 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:16,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 26 Invalid, 176 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [52 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 154.00ms Time]
[2021-11-13 18:23:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-11-13 18:23:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44.
[2021-11-13 18:23:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 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 18:23:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions.
[2021-11-13 18:23:16,978 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 32
[2021-11-13 18:23:16,978 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:16,979 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions.
[2021-11-13 18:23:16,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 18:23:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions.
[2021-11-13 18:23:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-11-13 18:23:16,980 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:16,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:23:17,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:17,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-11-13 18:23:17,193 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:17,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times
[2021-11-13 18:23:17,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:17,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279672076]
[2021-11-13 18:23:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:17,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-11-13 18:23:17,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:23:17,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279672076]
[2021-11-13 18:23:17,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279672076] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:23:17,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164430899]
[2021-11-13 18:23:17,810 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-11-13 18:23:17,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:17,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:17,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2021-11-13 18:23:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:23:17,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 38 conjunts are in the unsatisfiable core
[2021-11-13 18:23:17,856 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:17,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:23:17,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-11-13 18:23:17,890 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:23:17,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22
[2021-11-13 18:23:17,980 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2021-11-13 18:23:17,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32
[2021-11-13 18:23:18,110 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size
[2021-11-13 18:23:18,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44
[2021-11-13 18:23:18,502 INFO L354 Elim1Store]: treesize reduction 114, result has 39.4 percent of original size
[2021-11-13 18:23:18,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 58 treesize of output 106
[2021-11-13 18:23:19,374 INFO L354 Elim1Store]: treesize reduction 188, result has 35.8 percent of original size
[2021-11-13 18:23:19,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 130 treesize of output 185
[2021-11-13 18:23:24,511 INFO L354 Elim1Store]: treesize reduction 114, result has 39.4 percent of original size
[2021-11-13 18:23:24,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 252 treesize of output 186
[2021-11-13 18:23:28,578 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size
[2021-11-13 18:23:28,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 472 treesize of output 224
[2021-11-13 18:23:29,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|]
[2021-11-13 18:23:29,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:23:29,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2021-11-13 18:23:29,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889431133]
[2021-11-13 18:23:29,270 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:23:29,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-11-13 18:23:29,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:23:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-11-13 18:23:29,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930
[2021-11-13 18:23:29,271 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 18:23:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:23:30,850 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions.
[2021-11-13 18:23:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-11-13 18:23:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2021-11-13 18:23:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:23:30,852 INFO L225 Difference]: With dead ends: 112
[2021-11-13 18:23:30,852 INFO L226 Difference]: Without dead ends: 108
[2021-11-13 18:23:30,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=324, Invalid=2328, Unknown=0, NotChecked=0, Total=2652
[2021-11-13 18:23:30,854 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 530.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 663.64ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:23:30,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 132 Invalid, 800 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [117 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 663.64ms Time]
[2021-11-13 18:23:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2021-11-13 18:23:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 87.
[2021-11-13 18:23:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 86 states have internal predecessors, (109), 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 18:23:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions.
[2021-11-13 18:23:30,864 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 37
[2021-11-13 18:23:30,864 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:23:30,864 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions.
[2021-11-13 18:23:30,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 18:23:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions.
[2021-11-13 18:23:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-11-13 18:23:30,866 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:23:30,866 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:23:30,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2021-11-13 18:23:31,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-11-13 18:23:31,067 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:23:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:23:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times
[2021-11-13 18:23:31,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:23:31,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100722403]
[2021-11-13 18:23:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:23:31,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:23:31,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:23:31,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845415578]
[2021-11-13 18:23:31,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:23:31,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:23:31,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:23:31,079 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:23:31,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2021-11-13 18:23:31,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:23:31,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:23:31,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-11-13 18:23:31,161 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:23:31,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15
[2021-11-13 18:23:31,447 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:23:31,450 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size
[2021-11-13 18:23:31,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33
[2021-11-13 18:23:31,543 INFO L354 Elim1Store]: treesize reduction 114, result has 15.6 percent of original size
[2021-11-13 18:23:31,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 38
[2021-11-13 18:23:31,621 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 18:23:31,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21
[2021-11-13 18:23:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:23:31,703 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:24:01,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 18:24:01,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2264 treesize of output 2050
[2021-11-13 18:24:39,955 INFO L354 Elim1Store]: treesize reduction 84, result has 47.8 percent of original size
[2021-11-13 18:24:39,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 303 treesize of output 277
[2021-11-13 18:24:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:24:43,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:24:43,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100722403]
[2021-11-13 18:24:43,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:24:43,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845415578]
[2021-11-13 18:24:43,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845415578] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:24:43,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:24:43,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35
[2021-11-13 18:24:43,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456096962]
[2021-11-13 18:24:43,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:24:43,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2021-11-13 18:24:43,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:24:43,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-11-13 18:24:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=971, Unknown=15, NotChecked=0, Total=1190
[2021-11-13 18:24:43,850 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 35 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 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 18:24:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:24:44,822 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions.
[2021-11-13 18:24:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-11-13 18:24:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2021-11-13 18:24:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:24:44,825 INFO L225 Difference]: With dead ends: 135
[2021-11-13 18:24:44,825 INFO L226 Difference]: Without dead ends: 128
[2021-11-13 18:24:44,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=390, Invalid=1575, Unknown=15, NotChecked=0, Total=1980
[2021-11-13 18:24:44,827 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 167 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 359.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 454.04ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:24:44,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 47 Invalid, 682 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [114 Valid, 395 Invalid, 0 Unknown, 173 Unchecked, 454.04ms Time]
[2021-11-13 18:24:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2021-11-13 18:24:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111.
[2021-11-13 18:24:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2636363636363637) internal successors, (139), 110 states have internal predecessors, (139), 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 18:24:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions.
[2021-11-13 18:24:44,843 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 37
[2021-11-13 18:24:44,844 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:24:44,844 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions.
[2021-11-13 18:24:44,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 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 18:24:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions.
[2021-11-13 18:24:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-11-13 18:24:44,846 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:24:44,846 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:24:44,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2021-11-13 18:24:45,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-11-13 18:24:45,067 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:24:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:24:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2063837675, now seen corresponding path program 3 times
[2021-11-13 18:24:45,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:24:45,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500476699]
[2021-11-13 18:24:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:24:45,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:24:45,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:24:45,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018147077]
[2021-11-13 18:24:45,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:24:45,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:24:45,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:24:45,080 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:24:45,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2021-11-13 18:24:45,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-11-13 18:24:45,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:24:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-11-13 18:24:45,157 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:24:45,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17
[2021-11-13 18:24:45,381 INFO L354 Elim1Store]: treesize reduction 59, result has 16.9 percent of original size
[2021-11-13 18:24:45,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29
[2021-11-13 18:24:45,556 INFO L354 Elim1Store]: treesize reduction 129, result has 15.7 percent of original size
[2021-11-13 18:24:45,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 49
[2021-11-13 18:24:45,608 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 18:24:45,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32
[2021-11-13 18:24:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-11-13 18:24:45,768 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:24:47,585 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_138| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_138|))) (or (< .cse0 c_~N~0) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) (select .cse1 |ULTIMATE.start_main_~#sum~0#1.offset|))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_138| 4)))) (< c_~N~0 .cse0)))) is different from false
[2021-11-13 18:24:47,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:24:47,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500476699]
[2021-11-13 18:24:47,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:24:47,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018147077]
[2021-11-13 18:24:47,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|]
[2021-11-13 18:24:47,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:24:47,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0
[2021-11-13 18:24:47,642 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible
[2021-11-13 18:24:47,642 INFO L628 BasicCegarLoop]: Counterexample might be feasible
[2021-11-13 18:24:47,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 18:24:47,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2021-11-13 18:24:47,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2021-11-13 18:24:47,862 INFO L732 BasicCegarLoop]: Path program histogram: [7, 3, 1, 1, 1, 1, 1]
[2021-11-13 18:24:47,864 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:24:47,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:24:47 BoogieIcfgContainer
[2021-11-13 18:24:47,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:24:47,883 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:24:47,883 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:24:47,883 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:24:47,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:41" (3/4) ...
[2021-11-13 18:24:47,887 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2021-11-13 18:24:47,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:24:47,887 INFO L158 Benchmark]: Toolchain (without parser) took 127091.90ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 77.8MB in the beginning and 149.7MB in the end (delta: -71.9MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB.
[2021-11-13 18:24:47,888 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:24:47,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.61ms. Allocated memory is still 115.3MB. Free memory was 77.6MB in the beginning and 88.4MB in the end (delta: -10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:24:47,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.59ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 86.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:24:47,889 INFO L158 Benchmark]: Boogie Preprocessor took 58.51ms. Allocated memory is still 115.3MB. Free memory was 86.8MB in the beginning and 85.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:24:47,889 INFO L158 Benchmark]: RCFGBuilder took 412.51ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 74.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 18:24:47,889 INFO L158 Benchmark]: TraceAbstraction took 126289.06ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 73.8MB in the beginning and 149.7MB in the end (delta: -76.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB.
[2021-11-13 18:24:47,890 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 201.3MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:24:47,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 280.61ms. Allocated memory is still 115.3MB. Free memory was 77.6MB in the beginning and 88.4MB in the end (delta: -10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 40.59ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 86.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 58.51ms. Allocated memory is still 115.3MB. Free memory was 86.8MB in the beginning and 85.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 412.51ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 74.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 126289.06ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 73.8MB in the beginning and 149.7MB in the end (delta: -76.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB.
* Witness Printer took 3.92ms. Allocated memory is still 201.3MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] int i;
[L28] long long sum[1];
[L29] int *a = malloc(sizeof(int)*N);
[L31] sum[0] = 0
[L32] i=0
[L32] COND TRUE i<N
[L34] a[i] = 1
[L32] i++
[L32] COND TRUE i<N
[L34] a[i] = 1
[L32] i++
[L32] COND TRUE i<N
[L34] a[i] = 1
[L32] i++
[L32] COND FALSE !(i<N)
[L37] i=0
[L37] COND TRUE i<N
[L39] EXPR a[i]
[L39] COND TRUE a[i] == 1
[L40] EXPR a[i]
[L40] a[i] = a[i] + 4
[L37] i++
[L37] COND TRUE i<N
[L39] EXPR a[i]
[L39] COND TRUE a[i] == 1
[L40] EXPR a[i]
[L40] a[i] = a[i] + 4
[L37] i++
[L37] COND TRUE i<N
[L39] EXPR a[i]
[L39] COND TRUE a[i] == 1
[L40] EXPR a[i]
[L40] a[i] = a[i] + 4
[L37] i++
[L37] COND FALSE !(i<N)
[L46] i=0
[L46] COND TRUE i<N
[L48] EXPR a[i]
[L48] COND TRUE a[i] == 5
[L50] EXPR sum[0]
[L50] EXPR a[i]
[L50] sum[0] = sum[0] + a[i]
[L46] i++
[L46] COND TRUE i<N
[L48] EXPR a[i]
[L48] COND FALSE !(a[i] == 5)
[L52] EXPR sum[0]
[L52] EXPR a[i]
[L52] sum[0] = sum[0] * a[i]
[L46] i++
[L46] COND TRUE i<N
[L48] EXPR a[i]
[L48] COND TRUE a[i] == 5
[L50] EXPR sum[0]
[L50] EXPR a[i]
[L50] sum[0] = sum[0] + a[i]
[L46] i++
[L46] COND FALSE !(i<N)
[L56] EXPR sum[0]
[L56] CALL __VERIFIER_assert(sum[0] == 5*N)
[L15] COND TRUE !(cond)
[L15] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 126.2s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 720 SdHoareTripleChecker+Valid, 3092.91ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 720 mSDsluCounter, 713 SdHoareTripleChecker+Invalid, 2480.45ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 272 IncrementalHoareTripleChecker+Unchecked, 530 mSDsCounter, 556 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2998 IncrementalHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 556 mSolverCounterUnsat, 183 mSDtfsCounter, 2998 mSolverCounterSat, 32.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 451 SyntacticMatches, 24 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 55.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=14, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 194 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 89.3s InterpolantComputationTime, 507 NumberOfCodeBlocks, 507 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 726 ConstructedInterpolants, 22 QuantifiedInterpolants, 5538 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1116 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 167/376 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2021-11-13 18:24:47,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/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_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s42if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/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 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:24:50,259 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:24:50,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:24:50,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:24:50,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:24:50,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:24:50,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:24:50,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:24:50,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:24:50,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:24:50,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:24:50,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:24:50,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:24:50,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:24:50,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:24:50,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:24:50,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:24:50,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:24:50,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:24:50,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:24:50,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:24:50,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:24:50,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:24:50,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:24:50,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:24:50,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:24:50,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:24:50,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:24:50,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:24:50,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:24:50,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:24:50,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:24:50,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:24:50,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:24:50,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:24:50,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:24:50,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:24:50,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:24:50,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:24:50,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:24:50,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:24:50,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-13 18:24:50,445 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:24:50,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:24:50,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:24:50,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:24:50,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:24:50,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:24:50,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:24:50,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:24:50,449 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:24:50,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:24:50,451 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:24:50,451 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:24:50,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:24:50,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:24:50,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:24:50,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:24:50,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-13 18:24:50,453 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-13 18:24:50,453 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:24:50,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:24:50,454 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:24:50,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:24:50,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:24:50,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:24:50,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:24:50,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:24:50,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:24:50,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:24:50,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:24:50,457 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-13 18:24:50,457 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-13 18:24:50,457 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:24:50,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:24:50,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:24:50,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:24:50,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-13 18:24:50,459 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a
[2021-11-13 18:24:50,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:24:50,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:24:50,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:24:50,886 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:24:50,887 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:24:50,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-fpi/s42if.c
[2021-11-13 18:24:50,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/351345613/855303bc87714e4c8e23eb75306e3ee6/FLAG36cdeeeb3
[2021-11-13 18:24:51,549 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:24:51,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/sv-benchmarks/c/array-fpi/s42if.c
[2021-11-13 18:24:51,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/351345613/855303bc87714e4c8e23eb75306e3ee6/FLAG36cdeeeb3
[2021-11-13 18:24:51,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/data/351345613/855303bc87714e4c8e23eb75306e3ee6
[2021-11-13 18:24:51,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:24:51,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:24:51,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:24:51,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:24:51,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:24:51,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:24:51" (1/1) ...
[2021-11-13 18:24:51,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314f0d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:51, skipping insertion in model container
[2021-11-13 18:24:51,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:24:51" (1/1) ...
[2021-11-13 18:24:51,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:24:51,944 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:24:52,084 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_a701fddd-4613-4b28-8569-89e751135be7/sv-benchmarks/c/array-fpi/s42if.c[588,601]
[2021-11-13 18:24:52,108 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:24:52,118 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:24:52,130 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_a701fddd-4613-4b28-8569-89e751135be7/sv-benchmarks/c/array-fpi/s42if.c[588,601]
[2021-11-13 18:24:52,143 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:24:52,165 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:24:52,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52 WrapperNode
[2021-11-13 18:24:52,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:24:52,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:24:52,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:24:52,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:24:52,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:24:52,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:24:52,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:24:52,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:24:52,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:24:52,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:24:52,249 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:24:52,250 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:24:52,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (1/1) ...
[2021-11-13 18:24:52,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:24:52,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:24:52,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:24:52,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:24:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-13 18:24:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:24:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8
[2021-11-13 18:24:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-13 18:24:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2021-11-13 18:24:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:24:52,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:24:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8
[2021-11-13 18:24:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 18:24:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2021-11-13 18:24:52,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:24:52,863 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-11-13 18:24:52,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:24:52 BoogieIcfgContainer
[2021-11-13 18:24:52,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:24:52,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:24:52,867 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:24:52,870 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:24:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:24:51" (1/3) ...
[2021-11-13 18:24:52,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49be137f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:24:52, skipping insertion in model container
[2021-11-13 18:24:52,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:52" (2/3) ...
[2021-11-13 18:24:52,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49be137f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:24:52, skipping insertion in model container
[2021-11-13 18:24:52,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:24:52" (3/3) ...
[2021-11-13 18:24:52,874 INFO L111 eAbstractionObserver]: Analyzing ICFG s42if.c
[2021-11-13 18:24:52,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:24:52,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:24:52,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:24:52,947 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 18:24:52,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:24:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 18:24:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 18:24:52,972 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:24:52,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:24:52,974 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:24:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:24:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times
[2021-11-13 18:24:52,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:24:52,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607906947]
[2021-11-13 18:24:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:24:52,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:24:52,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:24:53,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:24:53,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-13 18:24:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:24:53,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-11-13 18:24:53,123 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:24:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:24:53,198 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:24:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:24:53,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:24:53,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607906947]
[2021-11-13 18:24:53,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607906947] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:24:53,277 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:24:53,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2021-11-13 18:24:53,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033836411]
[2021-11-13 18:24:53,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:24:53,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:24:53,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:24:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:24:53,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:24:53,327 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:24:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:24:53,344 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions.
[2021-11-13 18:24:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:24:53,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-13 18:24:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:24:53,356 INFO L225 Difference]: With dead ends: 42
[2021-11-13 18:24:53,356 INFO L226 Difference]: Without dead ends: 19
[2021-11-13 18:24:53,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 18:24:53,365 INFO L933 BasicCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:24:53,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:24:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-11-13 18:24:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-11-13 18:24:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:24:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2021-11-13 18:24:53,413 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13
[2021-11-13 18:24:53,414 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:24:53,414 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2021-11-13 18:24:53,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:24:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2021-11-13 18:24:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 18:24:53,416 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:24:53,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:24:53,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:24:53,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:24:53,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:24:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:24:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times
[2021-11-13 18:24:53,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:24:53,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255054060]
[2021-11-13 18:24:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:24:53,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:24:53,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:24:53,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:24:53,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-13 18:24:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:24:53,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 18:24:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:24:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:24:53,909 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:24:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:24:54,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:24:54,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255054060]
[2021-11-13 18:24:54,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255054060] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:24:54,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:24:54,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8
[2021-11-13 18:24:54,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694819208]
[2021-11-13 18:24:54,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 18:24:54,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 18:24:54,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:24:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 18:24:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:24:54,107 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:24:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:24:54,651 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions.
[2021-11-13 18:24:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 18:24:54,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-11-13 18:24:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:24:54,653 INFO L225 Difference]: With dead ends: 39
[2021-11-13 18:24:54,653 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 18:24:54,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:24:54,655 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 295.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.75ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:24:54,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 11 Invalid, 70 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [20 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 350.75ms Time]
[2021-11-13 18:24:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 18:24:54,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22.
[2021-11-13 18:24:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:24:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2021-11-13 18:24:54,662 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13
[2021-11-13 18:24:54,662 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:24:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2021-11-13 18:24:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:24:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2021-11-13 18:24:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 18:24:54,664 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:24:54,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:24:54,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:24:54,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:24:54,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:24:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:24:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times
[2021-11-13 18:24:54,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:24:54,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102995784]
[2021-11-13 18:24:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:24:54,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:24:54,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:24:54,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:24:54,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-13 18:24:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:24:55,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-11-13 18:24:55,007 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:24:55,158 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:24:55,183 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size
[2021-11-13 18:24:55,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18
[2021-11-13 18:24:55,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11
[2021-11-13 18:24:55,298 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-11-13 18:24:55,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35
[2021-11-13 18:24:55,835 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-11-13 18:24:55,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 36
[2021-11-13 18:24:56,313 INFO L354 Elim1Store]: treesize reduction 134, result has 13.5 percent of original size
[2021-11-13 18:24:56,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 50
[2021-11-13 18:24:56,692 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size
[2021-11-13 18:24:56,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 62
[2021-11-13 18:24:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:24:56,759 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:25:05,236 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:05,237 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:05,320 INFO L354 Elim1Store]: treesize reduction 88, result has 23.5 percent of original size
[2021-11-13 18:25:05,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 781 treesize of output 503
[2021-11-13 18:25:05,351 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2021-11-13 18:25:05,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 503 treesize of output 481
[2021-11-13 18:25:05,378 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2021-11-13 18:25:05,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 633 treesize of output 627
[2021-11-13 18:25:05,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 619 treesize of output 617
[2021-11-13 18:25:05,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 611 treesize of output 609
[2021-11-13 18:25:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:05,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:25:05,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102995784]
[2021-11-13 18:25:05,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102995784] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:25:05,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:25:05,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24
[2021-11-13 18:25:05,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908876428]
[2021-11-13 18:25:05,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:25:05,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2021-11-13 18:25:05,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:25:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-11-13 18:25:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=447, Unknown=2, NotChecked=0, Total=552
[2021-11-13 18:25:05,931 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 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 18:25:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:25:11,365 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions.
[2021-11-13 18:25:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-11-13 18:25:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-13 18:25:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:25:11,371 INFO L225 Difference]: With dead ends: 62
[2021-11-13 18:25:11,371 INFO L226 Difference]: Without dead ends: 58
[2021-11-13 18:25:11,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=198, Invalid=856, Unknown=2, NotChecked=0, Total=1056
[2021-11-13 18:25:11,373 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3265.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.52ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 3522.35ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:25:11,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 76 Invalid, 421 Unknown, 0 Unchecked, 7.52ms Time], IncrementalHoareTripleChecker [51 Valid, 315 Invalid, 0 Unknown, 55 Unchecked, 3522.35ms Time]
[2021-11-13 18:25:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2021-11-13 18:25:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33.
[2021-11-13 18:25:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions.
[2021-11-13 18:25:11,392 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21
[2021-11-13 18:25:11,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:25:11,393 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions.
[2021-11-13 18:25:11,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 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 18:25:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions.
[2021-11-13 18:25:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 18:25:11,395 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:25:11,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:25:11,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:25:11,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:25:11,607 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:25:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:25:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times
[2021-11-13 18:25:11,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:25:11,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082366338]
[2021-11-13 18:25:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:25:11,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:25:11,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:25:11,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:25:11,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-13 18:25:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:25:11,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 18:25:11,694 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:25:11,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:25:11,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13
[2021-11-13 18:25:11,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2021-11-13 18:25:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:11,895 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:25:12,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12
[2021-11-13 18:25:12,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20
[2021-11-13 18:25:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:12,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:25:12,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082366338]
[2021-11-13 18:25:12,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082366338] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:25:12,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:25:12,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11
[2021-11-13 18:25:12,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165713403]
[2021-11-13 18:25:12,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:25:12,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-13 18:25:12,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:25:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-13 18:25:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2021-11-13 18:25:12,089 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:25:12,814 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions.
[2021-11-13 18:25:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:25:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-13 18:25:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:25:12,817 INFO L225 Difference]: With dead ends: 55
[2021-11-13 18:25:12,817 INFO L226 Difference]: Without dead ends: 48
[2021-11-13 18:25:12,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:25:12,819 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 585.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 649.49ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:25:12,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 52 Invalid, 148 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 649.49ms Time]
[2021-11-13 18:25:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-11-13 18:25:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42.
[2021-11-13 18:25:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 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 18:25:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions.
[2021-11-13 18:25:12,830 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 21
[2021-11-13 18:25:12,830 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:25:12,830 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions.
[2021-11-13 18:25:12,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions.
[2021-11-13 18:25:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 18:25:12,832 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:25:12,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:25:12,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:25:13,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:25:13,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:25:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:25:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1649883961, now seen corresponding path program 1 times
[2021-11-13 18:25:13,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:25:13,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155689446]
[2021-11-13 18:25:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:25:13,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:25:13,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:25:13,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:25:13,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-11-13 18:25:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:25:13,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-13 18:25:13,123 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:25:13,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:25:13,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2021-11-13 18:25:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:25:13,248 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:25:13,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12
[2021-11-13 18:25:13,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20
[2021-11-13 18:25:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:25:13,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:25:13,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155689446]
[2021-11-13 18:25:13,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155689446] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:25:13,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:25:13,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-11-13 18:25:13,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287986665]
[2021-11-13 18:25:13,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:25:13,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 18:25:13,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:25:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 18:25:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:25:13,377 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:25:13,838 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions.
[2021-11-13 18:25:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 18:25:13,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-11-13 18:25:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:25:13,848 INFO L225 Difference]: With dead ends: 57
[2021-11-13 18:25:13,848 INFO L226 Difference]: Without dead ends: 45
[2021-11-13 18:25:13,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:25:13,849 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 373.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.45ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:25:13,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 410.45ms Time]
[2021-11-13 18:25:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-11-13 18:25:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42.
[2021-11-13 18:25:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 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 18:25:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2021-11-13 18:25:13,862 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 21
[2021-11-13 18:25:13,862 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:25:13,863 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2021-11-13 18:25:13,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2021-11-13 18:25:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-11-13 18:25:13,864 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:25:13,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:25:13,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:25:14,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:25:14,071 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:25:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:25:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times
[2021-11-13 18:25:14,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:25:14,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264736956]
[2021-11-13 18:25:14,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:25:14,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:25:14,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:25:14,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:25:14,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2021-11-13 18:25:14,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:25:14,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:25:14,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-11-13 18:25:14,158 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:25:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:25:14,535 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:25:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:14,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:25:14,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264736956]
[2021-11-13 18:25:14,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264736956] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:25:14,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:25:14,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18
[2021-11-13 18:25:14,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176330611]
[2021-11-13 18:25:14,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:25:14,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-13 18:25:14,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:25:14,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-13 18:25:14,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306
[2021-11-13 18:25:14,968 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:25:16,872 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions.
[2021-11-13 18:25:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-11-13 18:25:16,873 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2021-11-13 18:25:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:25:16,874 INFO L225 Difference]: With dead ends: 88
[2021-11-13 18:25:16,874 INFO L226 Difference]: Without dead ends: 73
[2021-11-13 18:25:16,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870
[2021-11-13 18:25:16,876 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 300 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1145.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1277.34ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:25:16,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 21 Invalid, 416 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [111 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1277.34ms Time]
[2021-11-13 18:25:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2021-11-13 18:25:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59.
[2021-11-13 18:25:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 58 states have internal predecessors, (71), 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 18:25:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions.
[2021-11-13 18:25:16,900 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 23
[2021-11-13 18:25:16,900 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:25:16,900 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions.
[2021-11-13 18:25:16,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:25:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions.
[2021-11-13 18:25:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-11-13 18:25:16,902 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:25:16,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:25:16,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:25:17,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:25:17,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:25:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:25:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times
[2021-11-13 18:25:17,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:25:17,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759676231]
[2021-11-13 18:25:17,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:25:17,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:25:17,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:25:17,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:25:17,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2021-11-13 18:25:17,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-11-13 18:25:17,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:25:17,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:25:17,225 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:25:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:25:17,542 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:25:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:25:17,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:25:17,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759676231]
[2021-11-13 18:25:17,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759676231] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:25:17,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:25:17,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14
[2021-11-13 18:25:17,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202280813]
[2021-11-13 18:25:17,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:25:17,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-13 18:25:17,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:25:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-13 18:25:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182
[2021-11-13 18:25:17,785 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 18:25:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:25:19,029 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions.
[2021-11-13 18:25:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 18:25:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-11-13 18:25:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:25:19,031 INFO L225 Difference]: With dead ends: 89
[2021-11-13 18:25:19,031 INFO L226 Difference]: Without dead ends: 53
[2021-11-13 18:25:19,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420
[2021-11-13 18:25:19,033 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 83 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 774.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 843.76ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:25:19,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 23 Invalid, 244 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [41 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 843.76ms Time]
[2021-11-13 18:25:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2021-11-13 18:25:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51.
[2021-11-13 18:25:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 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 18:25:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions.
[2021-11-13 18:25:19,043 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 24
[2021-11-13 18:25:19,043 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:25:19,043 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions.
[2021-11-13 18:25:19,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 18:25:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions.
[2021-11-13 18:25:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-11-13 18:25:19,045 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:25:19,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:25:19,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0
[2021-11-13 18:25:19,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:25:19,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:25:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:25:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times
[2021-11-13 18:25:19,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:25:19,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029259195]
[2021-11-13 18:25:19,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-11-13 18:25:19,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:25:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:25:19,261 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:25:19,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2021-11-13 18:25:19,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-11-13 18:25:19,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:25:19,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 33 conjunts are in the unsatisfiable core
[2021-11-13 18:25:19,374 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:25:19,482 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:19,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19
[2021-11-13 18:25:19,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10
[2021-11-13 18:25:19,599 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:19,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36
[2021-11-13 18:25:19,830 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:19,831 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:19,850 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size
[2021-11-13 18:25:19,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 44
[2021-11-13 18:25:20,396 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:20,397 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:20,398 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:20,401 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:20,416 INFO L354 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size
[2021-11-13 18:25:20,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 63
[2021-11-13 18:25:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:20,814 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:20,828 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size
[2021-11-13 18:25:20,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 54 treesize of output 47
[2021-11-13 18:25:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:21,203 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:21,204 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:21,251 INFO L354 Elim1Store]: treesize reduction 107, result has 15.7 percent of original size
[2021-11-13 18:25:21,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 97 treesize of output 60
[2021-11-13 18:25:21,621 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:21,652 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size
[2021-11-13 18:25:21,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 107 treesize of output 67
[2021-11-13 18:25:21,905 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size
[2021-11-13 18:25:21,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 86
[2021-11-13 18:25:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:21,976 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:25:48,131 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 18:25:48,132 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 18:25:48,149 INFO L354 Elim1Store]: treesize reduction 164, result has 0.6 percent of original size
[2021-11-13 18:25:48,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 81742 treesize of output 1
[2021-11-13 18:25:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:25:48,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:25:48,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029259195]
[2021-11-13 18:25:48,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029259195] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:25:48,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:25:48,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38
[2021-11-13 18:25:48,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797524088]
[2021-11-13 18:25:48,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:25:48,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2021-11-13 18:25:48,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:25:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2021-11-13 18:25:48,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406
[2021-11-13 18:25:48,172 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:26:05,149 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 115 DAG size of output: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-11-13 18:26:20,042 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse63 (bvmul |c_ULTIMATE.start_main_~i~0#1| (_ bv4 32)))) (let ((.cse53 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse64 (bvadd .cse63 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse65 (select .cse53 .cse64))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (let ((.cse66 ((_ sign_extend 32) (_ bv5 32)))) (bvadd .cse66 (let ((.cse67 (bvadd .cse66 (concat (_ bv0 32) (_ bv0 32))))) (concat ((_ extract 63 32) .cse67) ((_ extract 31 0) .cse67)))))) (.cse16 (bvslt (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv1 32)) c_~N~0)) (.cse19 (store .cse53 .cse64 (_ bv1 32))) (.cse33 (not (= .cse65 (_ bv1 32)))) (.cse10 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 ((_ sign_extend 32) (bvmul c_~N~0 (_ bv5 32)))) (.cse41 (store .cse53 .cse64 (bvadd (_ bv4 32) .cse65))) (.cse20 (bvadd (_ bv4 32) .cse63 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (= (select .cse0 .cse1) ((_ extract 63 32) .cse2)) (exists ((|ULTIMATE.start_main_~a~0#1.base| (_ BitVec 32))) (let ((.cse3 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (and (= (select .cse3 (_ bv0 32)) (_ bv5 32)) (= (_ bv5 32) (select .cse3 (_ bv4 32)))))) (let ((.cse18 (store .cse19 .cse20 (_ bv1 32)))) (let ((.cse17 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse14 (store .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| (bvadd (_ bv4 32) .cse17)))) (let ((.cse15 (select .cse14 .cse10))) (or (= .cse4 (let ((.cse13 (store .cse14 .cse10 (bvadd .cse15 (_ bv4 32))))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse11 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (bvadd ((_ sign_extend 32) (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse11 .cse1) (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse8 ((_ extract 63 32) .cse12))) (let ((.cse6 (store (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse12)) .cse1 .cse8))) (let ((.cse7 (bvadd (concat .cse8 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse6) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))))) (let ((.cse5 ((_ extract 63 32) .cse7))) (concat .cse5 (select (store (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse7)) .cse1 .cse5) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))) (not (= .cse15 (_ bv1 32))) (bvslt (bvadd |c_ULTIMATE.start_main_~i~0#1| (_ bv2 32)) c_~N~0) (not .cse16) (not (= .cse17 (_ bv1 32)))))))) (let ((.cse21 (bvule c_~N~0 (_ bv536870911 32)))) (or (and .cse21 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (not .cse21)))) (= (_ bv0 32) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (= (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset|) ((_ extract 31 0) .cse2)) (bvslt (_ bv1 32) c_~N~0) (let ((.cse22 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse31 (store .cse19 |c_ULTIMATE.start_main_~a~0#1.offset| (bvadd (_ bv4 32) .cse22)))) (let ((.cse32 (select .cse31 .cse10))) (or (not (bvslt |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (not (= .cse22 (_ bv1 32))) (= (let ((.cse30 (store .cse31 .cse10 (bvadd (_ bv4 32) .cse32)))) (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30))) (let ((.cse28 (select .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse29 (bvadd ((_ sign_extend 32) (select .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse28 .cse1) (select .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse26 ((_ extract 63 32) .cse29))) (let ((.cse24 (store (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse29)) .cse1 .cse26))) (let ((.cse25 (bvadd (concat .cse26 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))))) (let ((.cse23 ((_ extract 63 32) .cse25))) (concat .cse23 (select (store (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse25)) .cse1 .cse23) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) .cse4) (not (= (_ bv1 32) .cse32)) .cse16)))) (not (bvsle c_~N~0 (_ bv0 32))) (not (bvslt (_ bv2 32) c_~N~0)) (or .cse33 (= .cse4 (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse41))) (let ((.cse39 (select .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse40 (bvadd ((_ sign_extend 32) (select .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse39 .cse1) (select .cse39 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse38 ((_ extract 63 32) .cse40))) (let ((.cse35 (store (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse40)) .cse1 .cse38))) (let ((.cse36 (bvadd ((_ sign_extend 32) (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse35) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10)) (concat .cse38 (select .cse35 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse34 ((_ extract 63 32) .cse36))) (concat .cse34 (select (store (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse36)) .cse1 .cse34) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))) (let ((.cse43 (select .cse53 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse52 (store .cse53 |c_ULTIMATE.start_main_~a~0#1.offset| (bvadd (_ bv4 32) .cse43)))) (let ((.cse42 (select .cse52 .cse10))) (or (not (= .cse42 (_ bv1 32))) (not (= .cse43 (_ bv1 32))) (= .cse4 (let ((.cse51 (store .cse52 .cse10 (bvadd (_ bv4 32) .cse42)))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse51))) (let ((.cse49 (select .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse50 (bvadd (concat (select .cse49 .cse1) (select .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (let ((.cse47 ((_ extract 63 32) .cse50))) (let ((.cse45 (store (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse50)) .cse1 .cse47))) (let ((.cse46 (bvadd (concat .cse47 (select .cse45 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) (select (select (store .cse48 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse45) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))))) (let ((.cse44 ((_ extract 63 32) .cse46))) (concat .cse44 (select (store (store .cse45 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse46)) .cse1 .cse44) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))))) (let ((.cse54 (select .cse41 .cse20))) (or .cse33 (not (= .cse54 (_ bv1 32))) (= (let ((.cse62 (store .cse41 .cse20 (bvadd .cse54 (_ bv4 32))))) (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse62))) (let ((.cse60 (select .cse58 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse61 (bvadd ((_ sign_extend 32) (select .cse62 |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse60 .cse1) (select .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse59 ((_ extract 63 32) .cse61))) (let ((.cse56 (store (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse61)) .cse1 .cse59))) (let ((.cse57 (bvadd ((_ sign_extend 32) (select (select (store .cse58 |c_ULTIMATE.start_main_~#sum~0#1.base| .cse56) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10)) (concat .cse59 (select .cse56 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (let ((.cse55 ((_ extract 63 32) .cse57))) (concat .cse55 (select (store (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse57)) .cse1 .cse55) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) .cse4)))))))) is different from true
[2021-11-13 18:28:37,376 WARN L227 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 216 DAG size of output: 211 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-11-13 18:28:39,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 18:28:41,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 18:28:44,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 18:28:45,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 18:28:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:28:48,122 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions.
[2021-11-13 18:28:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-11-13 18:28:48,128 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29
[2021-11-13 18:28:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:28:48,129 INFO L225 Difference]: With dead ends: 77
[2021-11-13 18:28:48,129 INFO L226 Difference]: Without dead ends: 59
[2021-11-13 18:28:48,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 184.3s TimeCoverageRelationStatistics Valid=497, Invalid=2691, Unknown=8, NotChecked=110, Total=3306
[2021-11-13 18:28:48,131 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 113 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20424.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 21258.72ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:28:48,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 65 Invalid, 708 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [113 Valid, 591 Invalid, 1 Unknown, 3 Unchecked, 21258.72ms Time]
[2021-11-13 18:28:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2021-11-13 18:28:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57.
[2021-11-13 18:28:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 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 18:28:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions.
[2021-11-13 18:28:48,142 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 29
[2021-11-13 18:28:48,142 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:28:48,142 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions.
[2021-11-13 18:28:48,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:28:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions.
[2021-11-13 18:28:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-11-13 18:28:48,144 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:28:48,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:28:48,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2021-11-13 18:28:48,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:28:48,345 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:28:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:28:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times
[2021-11-13 18:28:48,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:28:48,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303547477]
[2021-11-13 18:28:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:28:48,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:28:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:28:48,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:28:48,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a701fddd-4613-4b28-8569-89e751135be7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2021-11-13 18:28:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:28:48,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-11-13 18:28:48,467 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:28:48,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10
[2021-11-13 18:28:48,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17
[2021-11-13 18:28:48,782 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size
[2021-11-13 18:28:48,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 25
[2021-11-13 18:28:49,082 INFO L354 Elim1Store]: treesize reduction 424, result has 8.0 percent of original size
[2021-11-13 18:28:49,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 62
[2021-11-13 18:28:55,372 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size
[2021-11-13 18:28:55,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 32
[2021-11-13 18:28:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:28:55,417 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:29:08,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| (_ BitVec 32))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (bvadd (_ bv4 32) |ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (bvadd ((_ sign_extend 32) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (concat (select .cse0 .cse2) (select .cse0 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (store (store .cse0 |ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse1)) .cse2 ((_ extract 63 32) .cse1))))) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~a~0#1.offset|)) (_ bv5 32))) is different from false
[2021-11-13 18:29:12,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 18:29:12,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 203210 treesize of output 181660