./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-19.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/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_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/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_afb4c780-de85-462e-bbfa-14602cd063ee/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 1853276af926d58c6b3ed0ec4b2f9e2337c8b095afaf2fd2143288796902cc0f
--- 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 20:16:28,380 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:16:28,383 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:16:28,447 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:16:28,448 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:16:28,452 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:16:28,455 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:16:28,461 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:16:28,463 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:16:28,470 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:16:28,471 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:16:28,474 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:16:28,475 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:16:28,478 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:16:28,480 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:16:28,482 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:16:28,484 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:16:28,486 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:16:28,487 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:16:28,496 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:16:28,497 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:16:28,499 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:16:28,503 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:16:28,504 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:16:28,514 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:16:28,514 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:16:28,515 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:16:28,517 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:16:28,518 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:16:28,519 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:16:28,519 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:16:28,522 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:16:28,525 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:16:28,527 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:16:28,528 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:16:28,528 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:16:28,529 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:16:28,530 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:16:28,530 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:16:28,539 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:16:28,540 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:16:28,541 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 20:16:28,595 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-02 20:16:28,596 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:16:28,597 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:16:28,597 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:16:28,599 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:16:28,599 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:16:28,600 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:16:28,600 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-02 20:16:28,601 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-02 20:16:28,601 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:16:28,603 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-02 20:16:28,603 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-02 20:16:28,604 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-02 20:16:28,604 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-02 20:16:28,604 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:16:28,605 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:16:28,605 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:16:28,605 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-02 20:16:28,606 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-02 20:16:28,606 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-02 20:16:28,606 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:16:28,607 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:16:28,607 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-02 20:16:28,607 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-02 20:16:28,608 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:16:28,608 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:16:28,610 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:16:28,611 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:16:28,611 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-02 20:16:28,611 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:16:28,612 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:16:28,612 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:16:28,613 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:16:28,613 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_afb4c780-de85-462e-bbfa-14602cd063ee/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_afb4c780-de85-462e-bbfa-14602cd063ee/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 -> 1853276af926d58c6b3ed0ec4b2f9e2337c8b095afaf2fd2143288796902cc0f
[2022-11-02 20:16:28,984 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:16:29,025 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:16:29,030 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:16:29,031 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-02 20:16:29,032 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-02 20:16:29,034 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/xcsp/Haystacks-19.c
[2022-11-02 20:16:29,122 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/data/32721ecf1/acbf626da91e4b75a690139d784aecba/FLAGa7769a5fc
[2022-11-02 20:16:29,964 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-02 20:16:29,965 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/sv-benchmarks/c/xcsp/Haystacks-19.c
[2022-11-02 20:16:30,006 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/data/32721ecf1/acbf626da91e4b75a690139d784aecba/FLAGa7769a5fc
[2022-11-02 20:16:30,501 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/data/32721ecf1/acbf626da91e4b75a690139d784aecba
[2022-11-02 20:16:30,504 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:16:30,506 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:16:30,508 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:16:30,508 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:16:30,517 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:16:30,518 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:30" (1/1) ...
[2022-11-02 20:16:30,520 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4877e72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:30, skipping insertion in model container
[2022-11-02 20:16:30,520 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:30" (1/1) ...
[2022-11-02 20:16:30,529 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-02 20:16:30,633 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:16:31,544 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_afb4c780-de85-462e-bbfa-14602cd063ee/sv-benchmarks/c/xcsp/Haystacks-19.c[171554,171567]
[2022-11-02 20:16:31,581 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:16:31,593 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-02 20:16:31,972 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_afb4c780-de85-462e-bbfa-14602cd063ee/sv-benchmarks/c/xcsp/Haystacks-19.c[171554,171567]
[2022-11-02 20:16:31,985 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:16:32,001 INFO  L208         MainTranslator]: Completed translation
[2022-11-02 20:16:32,002 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32 WrapperNode
[2022-11-02 20:16:32,002 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:16:32,004 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:16:32,004 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:16:32,004 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:16:32,016 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,099 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,371 INFO  L138                Inliner]: procedures = 13, calls = 4320, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5774
[2022-11-02 20:16:32,371 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:16:32,372 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:16:32,372 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:16:32,372 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:16:32,387 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,387 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,417 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,418 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,607 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,623 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,655 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,673 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,718 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:16:32,719 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:16:32,720 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:16:32,720 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:16:32,722 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (1/1) ...
[2022-11-02 20:16:32,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:16:32,747 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:16:32,765 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:16:32,785 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:16:32,816 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 20:16:32,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:16:32,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:16:32,817 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 20:16:32,817 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2022-11-02 20:16:32,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2022-11-02 20:16:33,177 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-02 20:16:33,193 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:16:37,989 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-02 20:16:38,027 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:16:38,027 INFO  L300             CfgBuilder]: Removed 0 assume(true) statements.
[2022-11-02 20:16:38,034 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:38 BoogieIcfgContainer
[2022-11-02 20:16:38,035 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:16:38,037 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:16:38,037 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:16:38,042 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:16:38,042 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:16:30" (1/3) ...
[2022-11-02 20:16:38,043 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f1dba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:38, skipping insertion in model container
[2022-11-02 20:16:38,043 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:32" (2/3) ...
[2022-11-02 20:16:38,044 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f1dba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:38, skipping insertion in model container
[2022-11-02 20:16:38,044 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:38" (3/3) ...
[2022-11-02 20:16:38,046 INFO  L112   eAbstractionObserver]: Analyzing ICFG Haystacks-19.c
[2022-11-02 20:16:38,068 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:16:38,069 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:16:38,270 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:16:38,279 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;@4f97765a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:16:38,280 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 20:16:38,303 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4685 states, 369 states have (on average 1.005420054200542) internal successors, (371), 370 states have internal predecessors, (371), 4313 states have call successors, (4313), 1 states have call predecessors, (4313), 1 states have return successors, (4313), 4313 states have call predecessors, (4313), 4313 states have call successors, (4313)
[2022-11-02 20:16:42,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21930
[2022-11-02 20:16:42,243 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:16:42,251 INFO  L195           NwaCegarLoop]: trace histogram [4313, 4313, 4313, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-11-02 20:16:42,253 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:16:42,259 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:16:42,268 INFO  L85        PathProgramCache]: Analyzing trace with hash -270166892, now seen corresponding path program 1 times
[2022-11-02 20:16:42,280 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:16:42,281 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528092491]
[2022-11-02 20:16:42,287 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:16:42,287 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:16:43,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:16:47,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:16:47,336 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528092491]
[2022-11-02 20:16:47,336 WARN  L310   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2022-11-02 20:16:47,337 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300894593]
[2022-11-02 20:16:47,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:16:47,343 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:16:47,343 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:16:47,347 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:16:47,373 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 20:16:56,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:16:56,321 INFO  L263         TraceCheckSpWp]: Trace formula consists of 40289 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-11-02 20:16:56,855 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:16:59,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 37195312 backedges. 8624 proven. 0 refuted. 0 times theorem prover too weak. 37186688 trivial. 0 not checked.
[2022-11-02 20:16:59,243 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:16:59,244 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [300894593] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:16:59,244 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:16:59,246 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:16:59,248 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883900077]
[2022-11-02 20:16:59,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:16:59,277 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 20:16:59,277 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:16:59,310 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 20:16:59,311 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 20:16:59,334 INFO  L87              Difference]: Start difference. First operand  has 4685 states, 369 states have (on average 1.005420054200542) internal successors, (371), 370 states have internal predecessors, (371), 4313 states have call successors, (4313), 1 states have call predecessors, (4313), 1 states have return successors, (4313), 4313 states have call predecessors, (4313), 4313 states have call successors, (4313) Second operand  has 2 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 2 states have call successors, (4313), 2 states have call predecessors, (4313), 1 states have return successors, (4313), 1 states have call predecessors, (4313), 2 states have call successors, (4313)
[2022-11-02 20:16:59,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:16:59,882 INFO  L93              Difference]: Finished difference Result 9364 states and 22301 transitions.
[2022-11-02 20:16:59,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-11-02 20:16:59,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 2 states have call successors, (4313), 2 states have call predecessors, (4313), 1 states have return successors, (4313), 1 states have call predecessors, (4313), 2 states have call successors, (4313) Word has length 21929
[2022-11-02 20:16:59,911 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:17:00,009 INFO  L225             Difference]: With dead ends: 9364
[2022-11-02 20:17:00,010 INFO  L226             Difference]: Without dead ends: 4682
[2022-11-02 20:17:00,099 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 21928 GetRequests, 21928 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 20:17:00,104 INFO  L413           NwaCegarLoop]: 8993 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, 8993 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 20:17:00,107 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8993 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:17:00,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4682 states.
[2022-11-02 20:17:11,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4682.
[2022-11-02 20:17:11,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4682 states, 367 states have (on average 1.0) internal successors, (367), 367 states have internal predecessors, (367), 4313 states have call successors, (4313), 1 states have call predecessors, (4313), 1 states have return successors, (4313), 4313 states have call predecessors, (4313), 4313 states have call successors, (4313)
[2022-11-02 20:17:11,688 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 8993 transitions.
[2022-11-02 20:17:11,694 INFO  L78                 Accepts]: Start accepts. Automaton has 4682 states and 8993 transitions. Word has length 21929
[2022-11-02 20:17:11,700 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:17:11,700 INFO  L495      AbstractCegarLoop]: Abstraction has 4682 states and 8993 transitions.
[2022-11-02 20:17:11,705 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 2 states have call successors, (4313), 2 states have call predecessors, (4313), 1 states have return successors, (4313), 1 states have call predecessors, (4313), 2 states have call successors, (4313)
[2022-11-02 20:17:11,705 INFO  L276                IsEmpty]: Start isEmpty. Operand 4682 states and 8993 transitions.
[2022-11-02 20:17:15,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21930
[2022-11-02 20:17:15,753 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:17:15,759 INFO  L195           NwaCegarLoop]: trace histogram [4313, 4313, 4313, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-11-02 20:17:15,855 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-02 20:17:15,960 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:17:15,960 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:17:15,961 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:17:15,967 INFO  L85        PathProgramCache]: Analyzing trace with hash 961390546, now seen corresponding path program 1 times
[2022-11-02 20:17:15,967 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:17:15,968 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244991801]
[2022-11-02 20:17:15,973 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:17:15,973 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:17:17,310 ERROR L245   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:17:17,311 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751398404]
[2022-11-02 20:17:17,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:17:17,318 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:17:17,318 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:17:17,319 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:17:17,351 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb4c780-de85-462e-bbfa-14602cd063ee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process