./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc --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 aa34b6970b46b2c3f1bda76d086482188f10831dd44cba913e5171769601c6f3
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 20:30:44,282 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:30:44,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:30:44,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:30:44,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:30:44,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:30:44,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:30:44,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:30:44,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:30:44,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:30:44,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:30:44,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:30:44,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:30:44,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:30:44,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:30:44,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:30:44,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:30:44,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:30:44,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:30:44,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:30:44,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:30:44,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:30:44,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:30:44,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:30:44,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:30:44,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:30:44,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:30:44,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:30:44,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:30:44,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:30:44,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:30:44,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:30:44,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:30:44,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:30:44,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:30:44,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:30:44,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:30:44,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:30:44,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:30:44,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:30:44,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:30:44,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 20:30:44,457 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 20:30:44,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:30:44,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:30:44,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:30:44,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:30:44,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:30:44,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:30:44,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 20:30:44,461 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 20:30:44,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:30:44,462 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 20:30:44,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 20:30:44,463 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 20:30:44,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 20:30:44,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:30:44,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:30:44,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:30:44,464 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 20:30:44,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 20:30:44,465 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 20:30:44,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:30:44,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:30:44,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 20:30:44,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 20:30:44,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:30:44,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:30:44,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:30:44,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:30:44,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 20:30:44,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:30:44,469 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:30:44,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:30:44,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:30:44,470 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_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa34b6970b46b2c3f1bda76d086482188f10831dd44cba913e5171769601c6f3
[2022-11-02 20:30:44,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:30:44,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:30:44,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:30:44,835 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 20:30:44,836 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 20:30:44,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c
[2022-11-02 20:30:44,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/data/5591a327b/f58b4a2d06614b699fbc1af614cc504e/FLAGae555f62d
[2022-11-02 20:30:45,498 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 20:30:45,499 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c
[2022-11-02 20:30:45,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/data/5591a327b/f58b4a2d06614b699fbc1af614cc504e/FLAGae555f62d
[2022-11-02 20:30:45,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/data/5591a327b/f58b4a2d06614b699fbc1af614cc504e
[2022-11-02 20:30:45,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:30:45,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:30:45,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:30:45,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:30:45,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:30:45,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:30:45" (1/1) ...
[2022-11-02 20:30:45,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2f3668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:45, skipping insertion in model container
[2022-11-02 20:30:45,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:30:45" (1/1) ...
[2022-11-02 20:30:45,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 20:30:45,873 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:30:46,126 WARN L230 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_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503]
[2022-11-02 20:30:46,147 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:30:46,156 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 20:30:46,170 WARN L230 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_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503]
[2022-11-02 20:30:46,181 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:30:46,196 INFO L208 MainTranslator]: Completed translation
[2022-11-02 20:30:46,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46 WrapperNode
[2022-11-02 20:30:46,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:30:46,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:30:46,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:30:46,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:30:46,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,239 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84
[2022-11-02 20:30:46,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:30:46,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:30:46,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:30:46,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:30:46,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:30:46,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:30:46,267 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:30:46,267 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:30:46,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (1/1) ...
[2022-11-02 20:30:46,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:30:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:46,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:30:46,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:30:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 20:30:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-11-02 20:30:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-11-02 20:30:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 20:30:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:30:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:30:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-11-02 20:30:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-11-02 20:30:46,453 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 20:30:46,455 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:30:46,740 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 20:30:46,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:30:46,762 INFO L300 CfgBuilder]: Removed 2 assume(true) statements.
[2022-11-02 20:30:46,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:46 BoogieIcfgContainer
[2022-11-02 20:30:46,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:30:46,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:30:46,766 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:30:46,771 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:30:46,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:30:45" (1/3) ...
[2022-11-02 20:30:46,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736f26cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:30:46, skipping insertion in model container
[2022-11-02 20:30:46,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:46" (2/3) ...
[2022-11-02 20:30:46,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736f26cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:30:46, skipping insertion in model container
[2022-11-02 20:30:46,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:46" (3/3) ...
[2022-11-02 20:30:46,786 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound10.c
[2022-11-02 20:30:46,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:30:46,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:30:46,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:30:46,937 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7739a9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:30:46,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 20:30:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-11-02 20:30:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-11-02 20:30:46,954 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:46,955 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:46,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1022199732, now seen corresponding path program 1 times
[2022-11-02 20:30:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119817341]
[2022-11-02 20:30:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:47,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119817341]
[2022-11-02 20:30:47,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2022-11-02 20:30:47,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339273606]
[2022-11-02 20:30:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:47,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:47,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:47,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 20:30:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-11-02 20:30:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-11-02 20:30:47,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:30:47,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339273606] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:30:47,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:30:47,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:30:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34915774]
[2022-11-02 20:30:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:30:47,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 20:30:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 20:30:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 20:30:47,453 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2022-11-02 20:30:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:47,481 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions.
[2022-11-02 20:30:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 20:30:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28
[2022-11-02 20:30:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:47,498 INFO L225 Difference]: With dead ends: 65
[2022-11-02 20:30:47,498 INFO L226 Difference]: Without dead ends: 30
[2022-11-02 20:30:47,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 20:30:47,506 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:47,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:30:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-11-02 20:30:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2022-11-02 20:30:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-11-02 20:30:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions.
[2022-11-02 20:30:47,574 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 28
[2022-11-02 20:30:47,574 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:47,575 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions.
[2022-11-02 20:30:47,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)
[2022-11-02 20:30:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions.
[2022-11-02 20:30:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-11-02 20:30:47,578 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:47,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:47,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:47,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2022-11-02 20:30:47,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash -455220980, now seen corresponding path program 1 times
[2022-11-02 20:30:47,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:47,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488442360]
[2022-11-02 20:30:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:47,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:47,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:47,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310377594]
[2022-11-02 20:30:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:47,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:47,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:47,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:47,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-02 20:30:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:47,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-11-02 20:30:47,944 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-11-02 20:30:48,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:30:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:48,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488442360]
[2022-11-02 20:30:48,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:48,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310377594]
[2022-11-02 20:30:48,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310377594] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:30:48,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:30:48,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 20:30:48,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488549216]
[2022-11-02 20:30:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:30:48,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:30:48,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:30:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:30:48,121 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-11-02 20:30:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:48,155 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions.
[2022-11-02 20:30:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 20:30:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29
[2022-11-02 20:30:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:48,160 INFO L225 Difference]: With dead ends: 40
[2022-11-02 20:30:48,161 INFO L226 Difference]: Without dead ends: 32
[2022-11-02 20:30:48,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:30:48,163 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:48,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:30:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-11-02 20:30:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-11-02 20:30:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-11-02 20:30:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions.
[2022-11-02 20:30:48,180 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 29
[2022-11-02 20:30:48,181 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:48,181 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions.
[2022-11-02 20:30:48,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-11-02 20:30:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions.
[2022-11-02 20:30:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-11-02 20:30:48,183 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:48,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:48,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:48,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:48,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1233535180, now seen corresponding path program 1 times
[2022-11-02 20:30:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:48,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408492504]
[2022-11-02 20:30:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:48,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:48,415 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:48,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156126188]
[2022-11-02 20:30:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:48,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:48,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:48,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:48,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-02 20:30:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:48,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-11-02 20:30:48,524 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:30:48,592 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:30:48,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:48,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408492504]
[2022-11-02 20:30:48,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:48,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156126188]
[2022-11-02 20:30:48,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156126188] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:30:48,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:30:48,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2022-11-02 20:30:48,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877076693]
[2022-11-02 20:30:48,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:48,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 20:30:48,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:48,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 20:30:48,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:30:48,744 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2022-11-02 20:30:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:48,856 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions.
[2022-11-02 20:30:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-02 20:30:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30
[2022-11-02 20:30:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:48,858 INFO L225 Difference]: With dead ends: 49
[2022-11-02 20:30:48,858 INFO L226 Difference]: Without dead ends: 41
[2022-11-02 20:30:48,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:30:48,860 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:48,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 92 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:30:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-11-02 20:30:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33.
[2022-11-02 20:30:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-11-02 20:30:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions.
[2022-11-02 20:30:48,871 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 30
[2022-11-02 20:30:48,871 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:48,871 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions.
[2022-11-02 20:30:48,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2022-11-02 20:30:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions.
[2022-11-02 20:30:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-11-02 20:30:48,873 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:48,873 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:48,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-11-02 20:30:49,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:49,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash -73118621, now seen corresponding path program 1 times
[2022-11-02 20:30:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:49,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683036843]
[2022-11-02 20:30:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:49,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:49,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:49,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13932376]
[2022-11-02 20:30:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:49,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:49,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:49,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:49,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-02 20:30:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:49,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core
[2022-11-02 20:30:49,182 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:30:49,286 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-11-02 20:30:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683036843]
[2022-11-02 20:30:49,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13932376]
[2022-11-02 20:30:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13932376] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:30:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:30:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10
[2022-11-02 20:30:49,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718105308]
[2022-11-02 20:30:49,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:30:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:30:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:30:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:30:49,381 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-11-02 20:30:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:49,454 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions.
[2022-11-02 20:30:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:30:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32
[2022-11-02 20:30:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:49,456 INFO L225 Difference]: With dead ends: 39
[2022-11-02 20:30:49,456 INFO L226 Difference]: Without dead ends: 37
[2022-11-02 20:30:49,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2022-11-02 20:30:49,457 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:49,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:30:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2022-11-02 20:30:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2022-11-02 20:30:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-11-02 20:30:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions.
[2022-11-02 20:30:49,468 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 32
[2022-11-02 20:30:49,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:49,468 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions.
[2022-11-02 20:30:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-11-02 20:30:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions.
[2022-11-02 20:30:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-11-02 20:30:49,470 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:49,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:49,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:49,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:49,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 96561445, now seen corresponding path program 1 times
[2022-11-02 20:30:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210055633]
[2022-11-02 20:30:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:49,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:49,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378575522]
[2022-11-02 20:30:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:49,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:49,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:49,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:49,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-11-02 20:30:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:49,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-11-02 20:30:49,787 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-11-02 20:30:49,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:30:49,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210055633]
[2022-11-02 20:30:49,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378575522]
[2022-11-02 20:30:49,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378575522] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:30:49,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:30:49,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:30:49,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389578538]
[2022-11-02 20:30:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:30:49,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:30:49,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:49,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:30:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:30:49,855 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-11-02 20:30:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:49,923 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions.
[2022-11-02 20:30:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:30:49,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35
[2022-11-02 20:30:49,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:49,925 INFO L225 Difference]: With dead ends: 62
[2022-11-02 20:30:49,925 INFO L226 Difference]: Without dead ends: 39
[2022-11-02 20:30:49,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:30:49,926 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:49,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 100 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:30:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2022-11-02 20:30:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2022-11-02 20:30:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2022-11-02 20:30:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions.
[2022-11-02 20:30:49,937 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 35
[2022-11-02 20:30:49,937 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:49,937 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions.
[2022-11-02 20:30:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2022-11-02 20:30:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions.
[2022-11-02 20:30:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-11-02 20:30:49,939 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:49,939 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:49,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:50,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:50,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash 433790877, now seen corresponding path program 1 times
[2022-11-02 20:30:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:50,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403840547]
[2022-11-02 20:30:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:50,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:50,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544898995]
[2022-11-02 20:30:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:50,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:50,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-11-02 20:30:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:50,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-11-02 20:30:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:30:50,508 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-11-02 20:30:50,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403840547]
[2022-11-02 20:30:50,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:50,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544898995]
[2022-11-02 20:30:50,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544898995] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:30:50,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:30:50,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10
[2022-11-02 20:30:50,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818011530]
[2022-11-02 20:30:50,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:30:50,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:30:50,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:30:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:30:50,643 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-11-02 20:30:50,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:50,745 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions.
[2022-11-02 20:30:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:30:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37
[2022-11-02 20:30:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:50,755 INFO L225 Difference]: With dead ends: 53
[2022-11-02 20:30:50,755 INFO L226 Difference]: Without dead ends: 51
[2022-11-02 20:30:50,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2022-11-02 20:30:50,756 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:50,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:30:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-11-02 20:30:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50.
[2022-11-02 20:30:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-11-02 20:30:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions.
[2022-11-02 20:30:50,770 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 37
[2022-11-02 20:30:50,770 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions.
[2022-11-02 20:30:50,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-11-02 20:30:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions.
[2022-11-02 20:30:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-11-02 20:30:50,772 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:50,772 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:50,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:50,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:50,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash -553232285, now seen corresponding path program 1 times
[2022-11-02 20:30:50,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:50,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326676858]
[2022-11-02 20:30:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:51,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:51,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221701096]
[2022-11-02 20:30:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:51,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:51,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:51,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-11-02 20:30:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:51,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-11-02 20:30:51,088 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:30:51,348 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-11-02 20:30:51,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:51,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326676858]
[2022-11-02 20:30:51,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:51,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221701096]
[2022-11-02 20:30:51,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221701096] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:30:51,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:30:51,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10
[2022-11-02 20:30:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925741963]
[2022-11-02 20:30:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:30:51,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:30:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:30:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:30:51,456 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2022-11-02 20:30:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:51,535 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions.
[2022-11-02 20:30:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:30:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42
[2022-11-02 20:30:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:51,537 INFO L225 Difference]: With dead ends: 57
[2022-11-02 20:30:51,537 INFO L226 Difference]: Without dead ends: 55
[2022-11-02 20:30:51,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2022-11-02 20:30:51,538 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:51,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 132 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:30:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2022-11-02 20:30:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54.
[2022-11-02 20:30:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 35 states have internal predecessors, (41), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-11-02 20:30:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions.
[2022-11-02 20:30:51,554 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 42
[2022-11-02 20:30:51,554 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:51,555 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions.
[2022-11-02 20:30:51,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2022-11-02 20:30:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions.
[2022-11-02 20:30:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2022-11-02 20:30:51,556 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:51,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:51,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:51,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:51,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2115683101, now seen corresponding path program 1 times
[2022-11-02 20:30:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:51,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433253188]
[2022-11-02 20:30:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:51,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:51,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194774265]
[2022-11-02 20:30:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:51,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:51,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:51,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-11-02 20:30:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-11-02 20:30:51,878 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-11-02 20:30:52,074 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:52,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:52,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433253188]
[2022-11-02 20:30:52,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:52,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194774265]
[2022-11-02 20:30:52,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194774265] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:30:52,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:30:52,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2022-11-02 20:30:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288455380]
[2022-11-02 20:30:52,519 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:52,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 20:30:52,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 20:30:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:30:52,520 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-11-02 20:30:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:52,716 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions.
[2022-11-02 20:30:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:30:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47
[2022-11-02 20:30:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:52,718 INFO L225 Difference]: With dead ends: 61
[2022-11-02 20:30:52,718 INFO L226 Difference]: Without dead ends: 59
[2022-11-02 20:30:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2022-11-02 20:30:52,719 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:52,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:30:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2022-11-02 20:30:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58.
[2022-11-02 20:30:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-11-02 20:30:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions.
[2022-11-02 20:30:52,745 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 47
[2022-11-02 20:30:52,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:52,747 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions.
[2022-11-02 20:30:52,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-11-02 20:30:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions.
[2022-11-02 20:30:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-11-02 20:30:52,753 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:52,753 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:52,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2022-11-02 20:30:52,980 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -879665460, now seen corresponding path program 1 times
[2022-11-02 20:30:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:52,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778188199]
[2022-11-02 20:30:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:52,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:52,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499812568]
[2022-11-02 20:30:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:52,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:52,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:52,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:53,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-11-02 20:30:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:53,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-11-02 20:30:53,073 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-11-02 20:30:53,185 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-11-02 20:30:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:53,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778188199]
[2022-11-02 20:30:53,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499812568]
[2022-11-02 20:30:53,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499812568] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:30:53,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:30:53,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10
[2022-11-02 20:30:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129906843]
[2022-11-02 20:30:53,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:53,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 20:30:53,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 20:30:53,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:30:53,280 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)
[2022-11-02 20:30:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:53,583 INFO L93 Difference]: Finished difference Result 211 states and 250 transitions.
[2022-11-02 20:30:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-11-02 20:30:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 56
[2022-11-02 20:30:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:53,591 INFO L225 Difference]: With dead ends: 211
[2022-11-02 20:30:53,591 INFO L226 Difference]: Without dead ends: 203
[2022-11-02 20:30:53,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:30:53,595 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 102 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:53,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 257 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:30:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2022-11-02 20:30:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195.
[2022-11-02 20:30:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2022-11-02 20:30:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 233 transitions.
[2022-11-02 20:30:53,674 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 233 transitions. Word has length 56
[2022-11-02 20:30:53,675 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:53,675 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 233 transitions.
[2022-11-02 20:30:53,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)
[2022-11-02 20:30:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 233 transitions.
[2022-11-02 20:30:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2022-11-02 20:30:53,682 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:53,682 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:53,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:53,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:53,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1506412172, now seen corresponding path program 1 times
[2022-11-02 20:30:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257757350]
[2022-11-02 20:30:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:53,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:53,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605756558]
[2022-11-02 20:30:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:53,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:53,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:53,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:53,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-11-02 20:30:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:53,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-11-02 20:30:53,976 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2022-11-02 20:30:54,055 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2022-11-02 20:30:54,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:54,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257757350]
[2022-11-02 20:30:54,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:54,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605756558]
[2022-11-02 20:30:54,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605756558] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:30:54,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:30:54,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2022-11-02 20:30:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942015888]
[2022-11-02 20:30:54,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:54,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-11-02 20:30:54,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-11-02 20:30:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:30:54,173 INFO L87 Difference]: Start difference. First operand 195 states and 233 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)
[2022-11-02 20:30:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:54,470 INFO L93 Difference]: Finished difference Result 279 states and 364 transitions.
[2022-11-02 20:30:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-11-02 20:30:54,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57
[2022-11-02 20:30:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:54,475 INFO L225 Difference]: With dead ends: 279
[2022-11-02 20:30:54,475 INFO L226 Difference]: Without dead ends: 259
[2022-11-02 20:30:54,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2022-11-02 20:30:54,478 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 64 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:54,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 238 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:30:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states.
[2022-11-02 20:30:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 235.
[2022-11-02 20:30:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55)
[2022-11-02 20:30:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions.
[2022-11-02 20:30:54,550 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 57
[2022-11-02 20:30:54,552 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:54,552 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions.
[2022-11-02 20:30:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)
[2022-11-02 20:30:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions.
[2022-11-02 20:30:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2022-11-02 20:30:54,555 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:54,555 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:54,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2022-11-02 20:30:54,771 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:54,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1869160295, now seen corresponding path program 1 times
[2022-11-02 20:30:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:54,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299212531]
[2022-11-02 20:30:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:54,786 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:54,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670234216]
[2022-11-02 20:30:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:54,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:54,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-11-02 20:30:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:54,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-11-02 20:30:54,869 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-11-02 20:30:54,963 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-11-02 20:30:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:55,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299212531]
[2022-11-02 20:30:55,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:55,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670234216]
[2022-11-02 20:30:55,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670234216] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:30:55,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:30:55,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10
[2022-11-02 20:30:55,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329679606]
[2022-11-02 20:30:55,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:55,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 20:30:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 20:30:55,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:30:55,066 INFO L87 Difference]: Start difference. First operand 235 states and 299 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)
[2022-11-02 20:30:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:55,335 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions.
[2022-11-02 20:30:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-11-02 20:30:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 59
[2022-11-02 20:30:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:55,340 INFO L225 Difference]: With dead ends: 344
[2022-11-02 20:30:55,340 INFO L226 Difference]: Without dead ends: 248
[2022-11-02 20:30:55,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:30:55,343 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 83 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 195 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:30:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states.
[2022-11-02 20:30:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244.
[2022-11-02 20:30:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 161 states have (on average 1.173913043478261) internal successors, (189), 164 states have internal predecessors, (189), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55)
[2022-11-02 20:30:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions.
[2022-11-02 20:30:55,407 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 59
[2022-11-02 20:30:55,408 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:55,408 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions.
[2022-11-02 20:30:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)
[2022-11-02 20:30:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions.
[2022-11-02 20:30:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2022-11-02 20:30:55,409 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:55,409 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:55,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:55,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:55,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 991223133, now seen corresponding path program 1 times
[2022-11-02 20:30:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:55,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183828965]
[2022-11-02 20:30:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:55,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:55,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:55,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099794533]
[2022-11-02 20:30:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:55,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:55,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:55,641 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:55,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2022-11-02 20:30:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:30:55,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-11-02 20:30:55,717 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2022-11-02 20:30:55,927 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked.
[2022-11-02 20:30:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:56,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183828965]
[2022-11-02 20:30:56,087 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:56,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099794533]
[2022-11-02 20:30:56,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099794533] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:30:56,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:30:56,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12
[2022-11-02 20:30:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255613630]
[2022-11-02 20:30:56,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:56,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:30:56,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:30:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:30:56,090 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16)
[2022-11-02 20:30:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:56,747 INFO L93 Difference]: Finished difference Result 330 states and 429 transitions.
[2022-11-02 20:30:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-11-02 20:30:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 64
[2022-11-02 20:30:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:56,752 INFO L225 Difference]: With dead ends: 330
[2022-11-02 20:30:56,752 INFO L226 Difference]: Without dead ends: 324
[2022-11-02 20:30:56,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2022-11-02 20:30:56,753 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 42 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:56,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 264 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-11-02 20:30:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states.
[2022-11-02 20:30:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 291.
[2022-11-02 20:30:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 194 states have (on average 1.1958762886597938) internal successors, (232), 203 states have internal predecessors, (232), 69 states have call successors, (69), 27 states have call predecessors, (69), 27 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65)
[2022-11-02 20:30:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions.
[2022-11-02 20:30:56,815 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 64
[2022-11-02 20:30:56,815 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:56,815 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions.
[2022-11-02 20:30:56,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16)
[2022-11-02 20:30:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions.
[2022-11-02 20:30:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2022-11-02 20:30:56,817 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:56,817 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:56,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:57,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2022-11-02 20:30:57,039 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1694315171, now seen corresponding path program 2 times
[2022-11-02 20:30:57,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:57,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859003241]
[2022-11-02 20:30:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:57,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:57,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:57,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393281065]
[2022-11-02 20:30:57,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:30:57,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:57,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:57,052 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:57,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2022-11-02 20:30:57,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:30:57,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:30:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-11-02 20:30:57,137 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:30:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-11-02 20:30:57,484 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:30:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-11-02 20:30:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:30:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859003241]
[2022-11-02 20:30:57,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:30:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393281065]
[2022-11-02 20:30:57,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393281065] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:30:57,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:30:57,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2022-11-02 20:30:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364499535]
[2022-11-02 20:30:57,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:30:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 20:30:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:30:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 20:30:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:30:57,727 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18)
[2022-11-02 20:30:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:30:59,393 INFO L93 Difference]: Finished difference Result 315 states and 395 transitions.
[2022-11-02 20:30:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-11-02 20:30:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 69
[2022-11-02 20:30:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:30:59,396 INFO L225 Difference]: With dead ends: 315
[2022-11-02 20:30:59,396 INFO L226 Difference]: Without dead ends: 312
[2022-11-02 20:30:59,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272
[2022-11-02 20:30:59,397 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 39 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2022-11-02 20:30:59,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 187 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2022-11-02 20:30:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2022-11-02 20:30:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 301.
[2022-11-02 20:30:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 203 states have (on average 1.187192118226601) internal successors, (241), 211 states have internal predecessors, (241), 67 states have call successors, (67), 30 states have call predecessors, (67), 30 states have return successors, (64), 59 states have call predecessors, (64), 64 states have call successors, (64)
[2022-11-02 20:30:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 372 transitions.
[2022-11-02 20:30:59,510 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 372 transitions. Word has length 69
[2022-11-02 20:30:59,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:30:59,511 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 372 transitions.
[2022-11-02 20:30:59,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18)
[2022-11-02 20:30:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 372 transitions.
[2022-11-02 20:30:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2022-11-02 20:30:59,512 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:30:59,512 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:30:59,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2022-11-02 20:30:59,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-11-02 20:30:59,738 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:30:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:30:59,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1349365539, now seen corresponding path program 3 times
[2022-11-02 20:30:59,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:30:59,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499834457]
[2022-11-02 20:30:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:30:59,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:30:59,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:30:59,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292548901]
[2022-11-02 20:30:59,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 20:30:59,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:30:59,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:30:59,753 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:30:59,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2022-11-02 20:30:59,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-11-02 20:30:59,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:30:59,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 38 conjunts are in the unsatisfiable core
[2022-11-02 20:30:59,841 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:31:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2022-11-02 20:31:00,342 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:31:00,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:31:00,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499834457]
[2022-11-02 20:31:00,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:31:00,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292548901]
[2022-11-02 20:31:00,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292548901] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:31:00,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:31:00,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2022-11-02 20:31:00,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524069492]
[2022-11-02 20:31:00,478 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:31:00,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 20:31:00,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:31:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 20:31:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:31:00,480 INFO L87 Difference]: Start difference. First operand 301 states and 372 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)
[2022-11-02 20:31:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:31:01,005 INFO L93 Difference]: Finished difference Result 333 states and 407 transitions.
[2022-11-02 20:31:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-11-02 20:31:01,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 74
[2022-11-02 20:31:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:31:01,010 INFO L225 Difference]: With dead ends: 333
[2022-11-02 20:31:01,010 INFO L226 Difference]: Without dead ends: 329
[2022-11-02 20:31:01,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210
[2022-11-02 20:31:01,012 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-11-02 20:31:01,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 190 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-11-02 20:31:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states.
[2022-11-02 20:31:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326.
[2022-11-02 20:31:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 220 states have (on average 1.1772727272727272) internal successors, (259), 227 states have internal predecessors, (259), 71 states have call successors, (71), 35 states have call predecessors, (71), 34 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68)
[2022-11-02 20:31:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 398 transitions.
[2022-11-02 20:31:01,142 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 398 transitions. Word has length 74
[2022-11-02 20:31:01,143 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:31:01,143 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 398 transitions.
[2022-11-02 20:31:01,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)
[2022-11-02 20:31:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 398 transitions.
[2022-11-02 20:31:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2022-11-02 20:31:01,145 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:31:01,145 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:31:01,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2022-11-02 20:31:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2022-11-02 20:31:01,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:31:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:31:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -484140586, now seen corresponding path program 1 times
[2022-11-02 20:31:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:31:01,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007641841]
[2022-11-02 20:31:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:31:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:31:01,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:31:01,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451596474]
[2022-11-02 20:31:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:31:01,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:31:01,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:31:01,380 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:31:01,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2022-11-02 20:31:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:31:01,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 40 conjunts are in the unsatisfiable core
[2022-11-02 20:31:01,459 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:31:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked.
[2022-11-02 20:31:01,960 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:31:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked.
[2022-11-02 20:31:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:31:02,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007641841]
[2022-11-02 20:31:02,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:31:02,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451596474]
[2022-11-02 20:31:02,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451596474] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:31:02,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:31:02,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19
[2022-11-02 20:31:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989210458]
[2022-11-02 20:31:02,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:31:02,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-11-02 20:31:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:31:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-11-02 20:31:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342
[2022-11-02 20:31:02,755 INFO L87 Difference]: Start difference. First operand 326 states and 398 transitions. Second operand has 19 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 11 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22)
[2022-11-02 20:31:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:31:06,565 INFO L93 Difference]: Finished difference Result 388 states and 484 transitions.
[2022-11-02 20:31:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-11-02 20:31:06,566 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 11 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 80
[2022-11-02 20:31:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:31:06,573 INFO L225 Difference]: With dead ends: 388
[2022-11-02 20:31:06,574 INFO L226 Difference]: Without dead ends: 373
[2022-11-02 20:31:06,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260
[2022-11-02 20:31:06,578 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 102 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2022-11-02 20:31:06,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 289 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2022-11-02 20:31:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states.
[2022-11-02 20:31:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 364.
[2022-11-02 20:31:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 246 states have (on average 1.1910569105691058) internal successors, (293), 251 states have internal predecessors, (293), 82 states have call successors, (82), 35 states have call predecessors, (82), 35 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81)
[2022-11-02 20:31:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 456 transitions.
[2022-11-02 20:31:06,712 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 456 transitions. Word has length 80
[2022-11-02 20:31:06,712 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:31:06,712 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 456 transitions.
[2022-11-02 20:31:06,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 11 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22)
[2022-11-02 20:31:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 456 transitions.
[2022-11-02 20:31:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-11-02 20:31:06,714 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:31:06,714 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:31:06,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2022-11-02 20:31:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2022-11-02 20:31:06,935 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:31:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:31:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1718599493, now seen corresponding path program 1 times
[2022-11-02 20:31:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:31:06,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251583803]
[2022-11-02 20:31:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:31:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:31:06,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:31:06,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717503774]
[2022-11-02 20:31:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:31:06,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:31:06,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:31:06,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:31:06,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2022-11-02 20:31:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:31:07,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 62 conjunts are in the unsatisfiable core
[2022-11-02 20:31:07,043 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:31:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 81 proven. 56 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked.
[2022-11-02 20:31:08,547 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:31:11,291 WARN L855 $PredicateComparison]: unable to prove that (or (not (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1|)) (+ (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~s~0#1|) |c_ULTIMATE.start_main_~b~0#1|))) (not (= (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (= (+ (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|))) (<= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) is different from true
[2022-11-02 20:31:19,924 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-02 20:31:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 160 trivial. 2 not checked.
[2022-11-02 20:31:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:31:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251583803]
[2022-11-02 20:31:32,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:31:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717503774]
[2022-11-02 20:31:32,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717503774] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:31:32,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:31:32,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25
[2022-11-02 20:31:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45534674]
[2022-11-02 20:31:32,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:31:32,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:31:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:31:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:31:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=440, Unknown=1, NotChecked=44, Total=600
[2022-11-02 20:31:32,782 INFO L87 Difference]: Start difference. First operand 364 states and 456 transitions. Second operand has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 18 states have internal predecessors, (51), 14 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30)
[2022-11-02 20:31:35,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:31:37,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:31:39,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:31:42,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:31:44,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:00,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:10,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:12,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:24,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:40,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:42,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:46,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:48,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:50,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:32:59,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:33:02,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:33:05,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:33:16,810 WARN L234 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 78 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-02 20:33:20,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:33:22,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:33:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:33:22,396 INFO L93 Difference]: Finished difference Result 496 states and 662 transitions.
[2022-11-02 20:33:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2022-11-02 20:33:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 18 states have internal predecessors, (51), 14 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) Word has length 97
[2022-11-02 20:33:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:33:22,399 INFO L225 Difference]: With dead ends: 496
[2022-11-02 20:33:22,400 INFO L226 Difference]: Without dead ends: 494
[2022-11-02 20:33:22,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 165 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=423, Invalid=1472, Unknown=1, NotChecked=84, Total=1980
[2022-11-02 20:33:22,401 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 164 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 204 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 54.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:33:22,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 260 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 806 Invalid, 19 Unknown, 121 Unchecked, 54.8s Time]
[2022-11-02 20:33:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states.
[2022-11-02 20:33:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 467.
[2022-11-02 20:33:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 307 states have (on average 1.250814332247557) internal successors, (384), 313 states have internal predecessors, (384), 123 states have call successors, (123), 36 states have call predecessors, (123), 36 states have return successors, (122), 117 states have call predecessors, (122), 122 states have call successors, (122)
[2022-11-02 20:33:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 629 transitions.
[2022-11-02 20:33:22,603 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 629 transitions. Word has length 97
[2022-11-02 20:33:22,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:33:22,603 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 629 transitions.
[2022-11-02 20:33:22,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 18 states have internal predecessors, (51), 14 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30)
[2022-11-02 20:33:22,604 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 629 transitions.
[2022-11-02 20:33:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2022-11-02 20:33:22,608 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:33:22,608 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:33:22,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2022-11-02 20:33:22,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2022-11-02 20:33:22,810 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:33:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:33:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 160443165, now seen corresponding path program 4 times
[2022-11-02 20:33:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:33:22,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703928553]
[2022-11-02 20:33:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:33:22,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:33:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010144939]
[2022-11-02 20:33:22,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-11-02 20:33:22,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:22,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:33:22,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:33:22,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2022-11-02 20:33:22,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-11-02 20:33:22,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:33:22,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-11-02 20:33:22,891 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:33:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked.
[2022-11-02 20:33:22,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:33:22,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:33:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703928553]
[2022-11-02 20:33:22,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:33:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010144939]
[2022-11-02 20:33:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010144939] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:33:22,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:33:22,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:33:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786463544]
[2022-11-02 20:33:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:33:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:33:22,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:33:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:33:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:33:22,934 INFO L87 Difference]: Start difference. First operand 467 states and 629 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15)
[2022-11-02 20:33:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:33:23,308 INFO L93 Difference]: Finished difference Result 750 states and 1082 transitions.
[2022-11-02 20:33:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-02 20:33:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 101
[2022-11-02 20:33:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:33:23,314 INFO L225 Difference]: With dead ends: 750
[2022-11-02 20:33:23,314 INFO L226 Difference]: Without dead ends: 535
[2022-11-02 20:33:23,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:33:23,316 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:33:23,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:33:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states.
[2022-11-02 20:33:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 485.
[2022-11-02 20:33:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 321 states have (on average 1.2585669781931463) internal successors, (404), 327 states have internal predecessors, (404), 127 states have call successors, (127), 36 states have call predecessors, (127), 36 states have return successors, (126), 121 states have call predecessors, (126), 126 states have call successors, (126)
[2022-11-02 20:33:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 657 transitions.
[2022-11-02 20:33:23,519 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 657 transitions. Word has length 101
[2022-11-02 20:33:23,519 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:33:23,520 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 657 transitions.
[2022-11-02 20:33:23,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15)
[2022-11-02 20:33:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 657 transitions.
[2022-11-02 20:33:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2022-11-02 20:33:23,521 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:33:23,522 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:33:23,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2022-11-02 20:33:23,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2022-11-02 20:33:23,727 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:33:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:33:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -245423741, now seen corresponding path program 1 times
[2022-11-02 20:33:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:33:23,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943765969]
[2022-11-02 20:33:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:23,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:33:23,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:33:23,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449164731]
[2022-11-02 20:33:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:23,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:23,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:33:23,744 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:33:23,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2022-11-02 20:33:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:33:23,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-11-02 20:33:23,830 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:33:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2022-11-02 20:33:24,006 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:33:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2022-11-02 20:33:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:33:24,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943765969]
[2022-11-02 20:33:24,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:33:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449164731]
[2022-11-02 20:33:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449164731] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:33:24,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:33:24,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14
[2022-11-02 20:33:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439607676]
[2022-11-02 20:33:24,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:33:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 20:33:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:33:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 20:33:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:33:24,191 INFO L87 Difference]: Start difference. First operand 485 states and 657 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 8 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32)
[2022-11-02 20:33:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:33:25,086 INFO L93 Difference]: Finished difference Result 1159 states and 1604 transitions.
[2022-11-02 20:33:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-11-02 20:33:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 8 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 112
[2022-11-02 20:33:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:33:25,093 INFO L225 Difference]: With dead ends: 1159
[2022-11-02 20:33:25,093 INFO L226 Difference]: Without dead ends: 925
[2022-11-02 20:33:25,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 206 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462
[2022-11-02 20:33:25,095 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 153 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:33:25,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 319 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:33:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states.
[2022-11-02 20:33:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 903.
[2022-11-02 20:33:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 582 states have (on average 1.2027491408934707) internal successors, (700), 592 states have internal predecessors, (700), 242 states have call successors, (242), 79 states have call predecessors, (242), 78 states have return successors, (238), 231 states have call predecessors, (238), 238 states have call successors, (238)
[2022-11-02 20:33:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1180 transitions.
[2022-11-02 20:33:25,559 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1180 transitions. Word has length 112
[2022-11-02 20:33:25,559 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:33:25,559 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1180 transitions.
[2022-11-02 20:33:25,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 8 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32)
[2022-11-02 20:33:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1180 transitions.
[2022-11-02 20:33:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:33:25,561 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:33:25,562 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:33:25,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2022-11-02 20:33:25,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2022-11-02 20:33:25,775 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:33:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:33:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1036292276, now seen corresponding path program 1 times
[2022-11-02 20:33:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:33:25,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487536081]
[2022-11-02 20:33:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:33:25,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:33:25,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515033713]
[2022-11-02 20:33:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:25,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:33:25,789 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:33:25,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2022-11-02 20:33:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:33:25,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-11-02 20:33:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:33:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 434 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked.
[2022-11-02 20:33:26,068 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:33:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked.
[2022-11-02 20:33:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:33:26,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487536081]
[2022-11-02 20:33:26,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:33:26,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515033713]
[2022-11-02 20:33:26,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515033713] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:33:26,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:33:26,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14
[2022-11-02 20:33:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545066110]
[2022-11-02 20:33:26,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:33:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 20:33:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:33:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 20:33:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:33:26,252 INFO L87 Difference]: Start difference. First operand 903 states and 1180 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 10 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40)
[2022-11-02 20:33:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:33:27,108 INFO L93 Difference]: Finished difference Result 944 states and 1222 transitions.
[2022-11-02 20:33:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-11-02 20:33:27,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 10 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 129
[2022-11-02 20:33:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:33:27,113 INFO L225 Difference]: With dead ends: 944
[2022-11-02 20:33:27,113 INFO L226 Difference]: Without dead ends: 924
[2022-11-02 20:33:27,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462
[2022-11-02 20:33:27,115 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 110 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:33:27,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 278 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:33:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states.
[2022-11-02 20:33:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 918.
[2022-11-02 20:33:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 597 states have (on average 1.1809045226130652) internal successors, (705), 607 states have internal predecessors, (705), 242 states have call successors, (242), 79 states have call predecessors, (242), 78 states have return successors, (238), 231 states have call predecessors, (238), 238 states have call successors, (238)
[2022-11-02 20:33:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1185 transitions.
[2022-11-02 20:33:27,530 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1185 transitions. Word has length 129
[2022-11-02 20:33:27,531 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:33:27,531 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1185 transitions.
[2022-11-02 20:33:27,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 10 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40)
[2022-11-02 20:33:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1185 transitions.
[2022-11-02 20:33:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2022-11-02 20:33:27,534 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:33:27,534 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:33:27,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2022-11-02 20:33:27,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:27,749 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:33:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:33:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2066876172, now seen corresponding path program 2 times
[2022-11-02 20:33:27,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:33:27,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182584885]
[2022-11-02 20:33:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:33:27,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:33:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223212461]
[2022-11-02 20:33:27,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:33:27,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:27,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:33:27,775 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:33:27,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2022-11-02 20:33:27,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:33:27,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:33:27,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 75 conjunts are in the unsatisfiable core
[2022-11-02 20:33:27,870 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:33:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 136 proven. 101 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked.
[2022-11-02 20:33:29,887 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:33:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2022-11-02 20:33:31,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:33:31,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182584885]
[2022-11-02 20:33:31,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:33:31,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223212461]
[2022-11-02 20:33:31,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223212461] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:33:31,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:33:31,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 30
[2022-11-02 20:33:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317932837]
[2022-11-02 20:33:31,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:33:31,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-11-02 20:33:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:33:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-11-02 20:33:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870
[2022-11-02 20:33:31,480 INFO L87 Difference]: Start difference. First operand 918 states and 1185 transitions. Second operand has 30 states, 24 states have (on average 2.375) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31)
[2022-11-02 20:33:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:33:53,086 INFO L93 Difference]: Finished difference Result 985 states and 1255 transitions.
[2022-11-02 20:33:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-11-02 20:33:53,087 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 2.375) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31) Word has length 130
[2022-11-02 20:33:53,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:33:53,091 INFO L225 Difference]: With dead ends: 985
[2022-11-02 20:33:53,091 INFO L226 Difference]: Without dead ends: 965
[2022-11-02 20:33:53,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=524, Invalid=2556, Unknown=0, NotChecked=0, Total=3080
[2022-11-02 20:33:53,093 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 167 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:33:53,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 501 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time]
[2022-11-02 20:33:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states.
[2022-11-02 20:33:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 861.
[2022-11-02 20:33:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 556 states have (on average 1.1654676258992807) internal successors, (648), 565 states have internal predecessors, (648), 219 states have call successors, (219), 85 states have call predecessors, (219), 85 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218)
[2022-11-02 20:33:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1085 transitions.
[2022-11-02 20:33:53,490 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1085 transitions. Word has length 130
[2022-11-02 20:33:53,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:33:53,490 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1085 transitions.
[2022-11-02 20:33:53,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 2.375) internal successors, (57), 21 states have internal predecessors, (57), 15 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 13 states have call predecessors, (31), 13 states have call successors, (31)
[2022-11-02 20:33:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1085 transitions.
[2022-11-02 20:33:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2022-11-02 20:33:53,492 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:33:53,493 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:33:53,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2022-11-02 20:33:53,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:53,695 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:33:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:33:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1962327715, now seen corresponding path program 2 times
[2022-11-02 20:33:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:33:53,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524689866]
[2022-11-02 20:33:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:33:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:33:53,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:33:53,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690785629]
[2022-11-02 20:33:53,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:33:53,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:33:53,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:33:53,705 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:33:53,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2022-11-02 20:33:53,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:33:53,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:33:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 89 conjunts are in the unsatisfiable core
[2022-11-02 20:33:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:33:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 194 proven. 154 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked.
[2022-11-02 20:33:55,369 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:34:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 210 proven. 71 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked.
[2022-11-02 20:34:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:34:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524689866]
[2022-11-02 20:34:02,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:34:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690785629]
[2022-11-02 20:34:02,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690785629] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:34:02,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:34:02,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25
[2022-11-02 20:34:02,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218656313]
[2022-11-02 20:34:02,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:34:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:34:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:34:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:34:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=451, Unknown=1, NotChecked=0, Total=600
[2022-11-02 20:34:02,283 INFO L87 Difference]: Start difference. First operand 861 states and 1085 transitions. Second operand has 25 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 16 states have call predecessors, (40), 14 states have call successors, (40)
[2022-11-02 20:34:05,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:10,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:15,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:17,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:19,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:21,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:25,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:32,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:34,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:36,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:38,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:43,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:45,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:47,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:50,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:52,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:54,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:56,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-02 20:34:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:34:57,279 INFO L93 Difference]: Finished difference Result 1069 states and 1388 transitions.
[2022-11-02 20:34:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-11-02 20:34:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 16 states have call predecessors, (40), 14 states have call successors, (40) Word has length 147
[2022-11-02 20:34:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:34:57,285 INFO L225 Difference]: With dead ends: 1069
[2022-11-02 20:34:57,285 INFO L226 Difference]: Without dead ends: 1067
[2022-11-02 20:34:57,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 263 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=355, Invalid=973, Unknown=4, NotChecked=0, Total=1332
[2022-11-02 20:34:57,287 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 137 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 164 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time
[2022-11-02 20:34:57,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 383 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 869 Invalid, 17 Unknown, 0 Unchecked, 42.5s Time]
[2022-11-02 20:34:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states.
[2022-11-02 20:34:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1016.
[2022-11-02 20:34:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 648 states have (on average 1.1944444444444444) internal successors, (774), 664 states have internal predecessors, (774), 277 states have call successors, (277), 90 states have call predecessors, (277), 90 states have return successors, (276), 261 states have call predecessors, (276), 276 states have call successors, (276)
[2022-11-02 20:34:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1327 transitions.
[2022-11-02 20:34:57,994 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1327 transitions. Word has length 147
[2022-11-02 20:34:57,995 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:34:57,995 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1327 transitions.
[2022-11-02 20:34:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 15 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 16 states have call predecessors, (40), 14 states have call successors, (40)
[2022-11-02 20:34:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1327 transitions.
[2022-11-02 20:34:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2022-11-02 20:34:58,000 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:34:58,001 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:34:58,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2022-11-02 20:34:58,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:34:58,214 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:34:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:34:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash -571493365, now seen corresponding path program 2 times
[2022-11-02 20:34:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:34:58,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846138416]
[2022-11-02 20:34:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:34:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:34:58,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:34:58,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205555343]
[2022-11-02 20:34:58,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:34:58,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:34:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:34:58,229 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:34:58,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2022-11-02 20:34:58,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:34:58,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2022-11-02 20:34:58,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 20:34:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:34:58,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 20:34:58,644 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 20:34:58,645 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-11-02 20:34:58,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2022-11-02 20:34:58,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2022-11-02 20:34:58,874 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:34:58,878 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-02 20:34:58,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:34:58 BoogieIcfgContainer
[2022-11-02 20:34:58,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-02 20:34:58,999 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-02 20:34:58,999 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-02 20:34:58,999 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-02 20:34:59,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:46" (3/4) ...
[2022-11-02 20:34:59,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2022-11-02 20:34:59,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/witness.graphml
[2022-11-02 20:34:59,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-02 20:34:59,116 INFO L158 Benchmark]: Toolchain (without parser) took 253277.57ms. Allocated memory was 92.3MB in the beginning and 283.1MB in the end (delta: 190.8MB). Free memory was 55.4MB in the beginning and 95.7MB in the end (delta: -40.3MB). Peak memory consumption was 151.2MB. Max. memory is 16.1GB.
[2022-11-02 20:34:59,116 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 79.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:34:59,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.19ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.2MB in the beginning and 86.5MB in the end (delta: -31.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB.
[2022-11-02 20:34:59,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.92ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 84.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:34:59,117 INFO L158 Benchmark]: Boogie Preprocessor took 25.91ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 83.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 20:34:59,118 INFO L158 Benchmark]: RCFGBuilder took 497.64ms. Allocated memory is still 111.1MB. Free memory was 83.5MB in the beginning and 71.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2022-11-02 20:34:59,118 INFO L158 Benchmark]: TraceAbstraction took 252232.45ms. Allocated memory was 111.1MB in the beginning and 283.1MB in the end (delta: 172.0MB). Free memory was 71.0MB in the beginning and 104.1MB in the end (delta: -33.1MB). Peak memory consumption was 141.2MB. Max. memory is 16.1GB.
[2022-11-02 20:34:59,119 INFO L158 Benchmark]: Witness Printer took 116.78ms. Allocated memory is still 283.1MB. Free memory was 104.1MB in the beginning and 95.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 20:34:59,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 79.0kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 357.19ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.2MB in the beginning and 86.5MB in the end (delta: -31.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 40.92ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 84.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 25.91ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 83.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 497.64ms. Allocated memory is still 111.1MB. Free memory was 83.5MB in the beginning and 71.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 252232.45ms. Allocated memory was 111.1MB in the beginning and 283.1MB in the end (delta: 172.0MB). Free memory was 71.0MB in the beginning and 104.1MB in the end (delta: -33.1MB). Peak memory consumption was 141.2MB. Max. memory is 16.1GB.
* Witness Printer took 116.78ms. Allocated memory is still 283.1MB. Free memory was 104.1MB in the beginning and 95.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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
- CounterExampleResult [Line: 13]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L18] int counter = 0;
VAL [counter=0]
[L20] int x, y;
[L21] long long a, b, p, q, r, s, c, k, xy, yy;
[L22] x = __VERIFIER_nondet_int()
[L23] y = __VERIFIER_nondet_int()
[L24] CALL assume_abort_if_not(x >= 1)
VAL [\old(cond)=1, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1, counter=0]
[L24] RET assume_abort_if_not(x >= 1)
VAL [counter=0, x=9, y=15]
[L25] CALL assume_abort_if_not(y >= 1)
VAL [\old(cond)=1, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1, counter=0]
[L25] RET assume_abort_if_not(y >= 1)
VAL [counter=0, x=9, y=15]
[L27] a = x
[L28] b = y
[L29] p = 1
[L30] q = 0
[L31] r = 0
[L32] s = 1
[L33] c = 0
[L34] k = 0
[L35] xy = (long long) x * y
[L36] yy = (long long) y * y
VAL [a=9, b=15, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L37] CALL assume_abort_if_not(xy < 2147483647)
VAL [\old(cond)=1, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1, counter=0]
[L37] RET assume_abort_if_not(xy < 2147483647)
VAL [a=9, b=15, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L38] CALL assume_abort_if_not(yy < 2147483647)
VAL [\old(cond)=1, counter=0]
[L8] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1, counter=0]
[L38] RET assume_abort_if_not(yy < 2147483647)
VAL [a=9, b=15, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L40] EXPR counter++
VAL [a=9, b=15, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L40] COND TRUE counter++<10
[L41] COND FALSE !(!(b != 0))
[L43] c = a
[L44] k = 0
VAL [a=9, b=15, c=9, counter=1, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=9, b=15, c=9, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L46] COND TRUE counter++<10
[L47] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, counter=2]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=2]
[L47] RET __VERIFIER_assert(a == k * b + c)
VAL [a=9, b=15, c=9, counter=2, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L48] CALL __VERIFIER_assert(a == y*r + x*p)
VAL [\old(cond)=1, counter=2]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=2]
[L48] RET __VERIFIER_assert(a == y*r + x*p)
VAL [a=9, b=15, c=9, counter=2, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L49] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, counter=2]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=2]
[L49] RET __VERIFIER_assert(b == x * q + y * s)
VAL [a=9, b=15, c=9, counter=2, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [\old(cond)=1, counter=2]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=2]
[L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [a=9, b=15, c=9, counter=2, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L51] COND TRUE !(c >= b)
VAL [a=9, b=15, c=9, counter=2, k=0, p=1, q=0, r=0, s=1, x=9, xy=135, y=15, yy=225]
[L57] a = b
[L58] b = c
[L60] long long temp;
[L61] temp = p
[L62] p = q
[L63] q = temp - q * k
[L64] temp = r
[L65] r = s
[L66] s = temp - s * k
VAL [a=15, b=9, c=9, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L40] EXPR counter++
VAL [a=15, b=9, c=9, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L40] COND TRUE counter++<10
[L41] COND FALSE !(!(b != 0))
[L43] c = a
[L44] k = 0
VAL [a=15, b=9, c=15, counter=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=15, b=9, c=15, counter=4, counter++=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L46] COND TRUE counter++<10
[L47] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, counter=4]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=4]
[L47] RET __VERIFIER_assert(a == k * b + c)
VAL [a=15, b=9, c=15, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L48] CALL __VERIFIER_assert(a == y*r + x*p)
VAL [\old(cond)=1, counter=4]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=4]
[L48] RET __VERIFIER_assert(a == y*r + x*p)
VAL [a=15, b=9, c=15, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L49] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, counter=4]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=4]
[L49] RET __VERIFIER_assert(b == x * q + y * s)
VAL [a=15, b=9, c=15, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [\old(cond)=1, counter=4]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=4]
[L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [a=15, b=9, c=15, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L51] COND FALSE !(!(c >= b))
[L53] c = c - b
[L54] k = k + 1
VAL [a=15, b=9, c=6, counter=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=15, b=9, c=6, counter=5, counter++=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L46] COND TRUE counter++<10
[L47] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=5]
[L47] RET __VERIFIER_assert(a == k * b + c)
VAL [a=15, b=9, c=6, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L48] CALL __VERIFIER_assert(a == y*r + x*p)
VAL [\old(cond)=1, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=5]
[L48] RET __VERIFIER_assert(a == y*r + x*p)
VAL [a=15, b=9, c=6, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L49] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=5]
[L49] RET __VERIFIER_assert(b == x * q + y * s)
VAL [a=15, b=9, c=6, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [\old(cond)=1, counter=5]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=5]
[L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [a=15, b=9, c=6, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L51] COND TRUE !(c >= b)
VAL [a=15, b=9, c=6, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=9, xy=135, y=15, yy=225]
[L57] a = b
[L58] b = c
[L60] long long temp;
[L61] temp = p
[L62] p = q
[L63] q = temp - q * k
[L64] temp = r
[L65] r = s
[L66] s = temp - s * k
VAL [a=9, b=6, c=6, counter=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L40] EXPR counter++
VAL [a=9, b=6, c=6, counter=6, counter++=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L40] COND TRUE counter++<10
[L41] COND FALSE !(!(b != 0))
[L43] c = a
[L44] k = 0
VAL [a=9, b=6, c=9, counter=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=9, b=6, c=9, counter=7, counter++=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L46] COND TRUE counter++<10
[L47] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, counter=7]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=7]
[L47] RET __VERIFIER_assert(a == k * b + c)
VAL [a=9, b=6, c=9, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L48] CALL __VERIFIER_assert(a == y*r + x*p)
VAL [\old(cond)=1, counter=7]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=7]
[L48] RET __VERIFIER_assert(a == y*r + x*p)
VAL [a=9, b=6, c=9, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L49] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, counter=7]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=7]
[L49] RET __VERIFIER_assert(b == x * q + y * s)
VAL [a=9, b=6, c=9, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [\old(cond)=1, counter=7]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=7]
[L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [a=9, b=6, c=9, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L51] COND FALSE !(!(c >= b))
[L53] c = c - b
[L54] k = k + 1
VAL [a=9, b=6, c=3, counter=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=9, b=6, c=3, counter=8, counter++=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L46] COND TRUE counter++<10
[L47] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, counter=8]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=8]
[L47] RET __VERIFIER_assert(a == k * b + c)
VAL [a=9, b=6, c=3, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L48] CALL __VERIFIER_assert(a == y*r + x*p)
VAL [\old(cond)=1, counter=8]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=8]
[L48] RET __VERIFIER_assert(a == y*r + x*p)
VAL [a=9, b=6, c=3, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L49] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, counter=8]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=8]
[L49] RET __VERIFIER_assert(b == x * q + y * s)
VAL [a=9, b=6, c=3, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [\old(cond)=1, counter=8]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=8]
[L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [a=9, b=6, c=3, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L51] COND TRUE !(c >= b)
VAL [a=9, b=6, c=3, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=9, xy=135, y=15, yy=225]
[L57] a = b
[L58] b = c
[L60] long long temp;
[L61] temp = p
[L62] p = q
[L63] q = temp - q * k
[L64] temp = r
[L65] r = s
[L66] s = temp - s * k
VAL [a=6, b=3, c=3, counter=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L40] EXPR counter++
VAL [a=6, b=3, c=3, counter=9, counter++=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L40] COND TRUE counter++<10
[L41] COND FALSE !(!(b != 0))
[L43] c = a
[L44] k = 0
VAL [a=6, b=3, c=6, counter=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=6, b=3, c=6, counter=10, counter++=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L46] COND TRUE counter++<10
[L47] CALL __VERIFIER_assert(a == k * b + c)
VAL [\old(cond)=1, counter=10]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=10]
[L47] RET __VERIFIER_assert(a == k * b + c)
VAL [a=6, b=3, c=6, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L48] CALL __VERIFIER_assert(a == y*r + x*p)
VAL [\old(cond)=1, counter=10]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=10]
[L48] RET __VERIFIER_assert(a == y*r + x*p)
VAL [a=6, b=3, c=6, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L49] CALL __VERIFIER_assert(b == x * q + y * s)
VAL [\old(cond)=1, counter=10]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=10]
[L49] RET __VERIFIER_assert(b == x * q + y * s)
VAL [a=6, b=3, c=6, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [\old(cond)=1, counter=10]
[L11] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, counter=10]
[L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0)
VAL [a=6, b=3, c=6, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L51] COND FALSE !(!(c >= b))
[L53] c = c - b
[L54] k = k + 1
VAL [a=6, b=3, c=3, counter=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L46] EXPR counter++
VAL [a=6, b=3, c=3, counter=11, counter++=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=9, xy=135, y=15, yy=225]
[L46] COND FALSE !(counter++<10)
[L57] a = b
[L58] b = c
[L60] long long temp;
[L61] temp = p
[L62] p = q
[L63] q = temp - q * k
[L64] temp = r
[L65] r = s
[L66] s = temp - s * k
VAL [a=3, b=3, c=3, counter=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=9, xy=135, y=15, yy=225]
[L40] EXPR counter++
VAL [a=3, b=3, c=3, counter=12, counter++=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=9, xy=135, y=15, yy=225]
[L40] COND FALSE !(counter++<10)
[L70] CALL __VERIFIER_assert(q*x + s*y == 0)
VAL [\old(cond)=0, counter=12]
[L11] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0, counter=12]
[L13] reach_error()
VAL [\old(cond)=0, cond=0, counter=12]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 252.0s, OverallIterations: 22, TraceHistogramMax: 25, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 196.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 mSolverCounterUnknown, 1350 SdHoareTripleChecker+Valid, 113.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1275 mSDsluCounter, 4357 SdHoareTripleChecker+Invalid, 112.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 121 IncrementalHoareTripleChecker+Unchecked, 3345 mSDsCounter, 1294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5411 IncrementalHoareTripleChecker+Invalid, 6862 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1294 mSolverCounterUnsat, 1012 mSDtfsCounter, 5411 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2715 GetRequests, 2324 SyntacticMatches, 51 SemanticMatches, 340 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 98.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1016occurred in iteration=21, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 363 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 44.3s InterpolantComputationTime, 1668 NumberOfCodeBlocks, 1644 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2560 ConstructedInterpolants, 0 QuantifiedInterpolants, 16907 SizeOfPredicates, 106 NumberOfNonLiveVariables, 4012 ConjunctsInSsa, 491 ConjunctsInUnsatCore, 36 InterpolantComputations, 7 PerfectInterpolantSequences, 5748/7086 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-11-02 20:34:59,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e335b11-5693-462c-b3cf-9fdc6cb6b77c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE