./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c --full-output --architecture 64bit


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


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_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/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_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/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 64bit --witnessprinter.graph.data.programhash 26db93204ab32e8f9e21f7eb034d2307b8352a18baf9236ed38d699dc2a3b5eb
--- 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 20:32:12,228 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:32:12,230 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:32:12,257 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:32:12,257 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:32:12,258 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:32:12,260 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:32:12,262 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:32:12,263 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:32:12,264 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:32:12,266 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:32:12,267 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:32:12,267 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:32:12,269 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:32:12,270 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:32:12,271 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:32:12,272 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:32:12,273 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:32:12,275 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:32:12,277 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:32:12,279 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:32:12,280 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:32:12,282 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:32:12,283 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:32:12,286 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:32:12,287 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:32:12,287 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:32:12,288 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:32:12,289 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:32:12,290 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:32:12,290 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:32:12,291 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:32:12,292 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:32:12,293 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:32:12,294 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:32:12,294 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:32:12,295 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:32:12,295 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:32:12,296 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:32:12,297 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:32:12,298 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:32:12,299 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf
[2022-11-02 20:32:12,319 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-02 20:32:12,320 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:32:12,320 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:32:12,320 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:32:12,321 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:32:12,321 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:32:12,322 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:32:12,322 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-02 20:32:12,322 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-02 20:32:12,323 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:32:12,323 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-02 20:32:12,323 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-02 20:32:12,323 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:32:12,324 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:32:12,324 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:32:12,324 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-02 20:32:12,324 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-02 20:32:12,325 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:32:12,325 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:32:12,325 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-02 20:32:12,325 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-02 20:32:12,326 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:32:12,326 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:32:12,326 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:32:12,326 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:32:12,327 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-02 20:32:12,327 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:32:12,327 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:32:12,327 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:32:12,327 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:32:12,328 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_16813468-13ff-4417-a955-a2d6b72f6dd2/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_16813468-13ff-4417-a955-a2d6b72f6dd2/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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26db93204ab32e8f9e21f7eb034d2307b8352a18baf9236ed38d699dc2a3b5eb
[2022-11-02 20:32:12,582 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:32:12,607 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:32:12,611 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:32:12,613 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-02 20:32:12,614 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-02 20:32:12,615 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c
[2022-11-02 20:32:12,681 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/data/1d7a0adc3/2d4caadaab1647a3b7b4e191d560ce19/FLAG99c8060aa
[2022-11-02 20:32:13,240 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-02 20:32:13,241 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c
[2022-11-02 20:32:13,263 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/data/1d7a0adc3/2d4caadaab1647a3b7b4e191d560ce19/FLAG99c8060aa
[2022-11-02 20:32:13,530 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/data/1d7a0adc3/2d4caadaab1647a3b7b4e191d560ce19
[2022-11-02 20:32:13,533 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:32:13,534 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:32:13,536 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:32:13,537 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:32:13,545 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:32:13,546 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:13" (1/1) ...
[2022-11-02 20:32:13,547 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e474042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:13, skipping insertion in model container
[2022-11-02 20:32:13,548 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:13" (1/1) ...
[2022-11-02 20:32:13,555 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-02 20:32:13,600 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:32:13,796 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_16813468-13ff-4417-a955-a2d6b72f6dd2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c[1014,1027]
[2022-11-02 20:32:14,035 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:32:14,050 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-02 20:32:14,060 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_16813468-13ff-4417-a955-a2d6b72f6dd2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c[1014,1027]
[2022-11-02 20:32:14,235 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:32:14,257 INFO  L208         MainTranslator]: Completed translation
[2022-11-02 20:32:14,257 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14 WrapperNode
[2022-11-02 20:32:14,258 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:32:14,259 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:32:14,259 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:32:14,259 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:32:14,275 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,323 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,471 INFO  L138                Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1254
[2022-11-02 20:32:14,471 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:32:14,472 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:32:14,472 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:32:14,472 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:32:14,481 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,481 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,492 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,492 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,530 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,537 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,545 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,570 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,600 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:32:14,600 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:32:14,601 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:32:14,601 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:32:14,602 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (1/1) ...
[2022-11-02 20:32:14,611 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:32:14,623 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:32:14,640 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:32:14,663 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:32:14,689 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:32:14,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:32:15,075 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-02 20:32:15,077 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:32:18,878 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-02 20:32:18,888 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:32:18,888 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 20:32:18,890 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:18 BoogieIcfgContainer
[2022-11-02 20:32:18,891 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:32:18,893 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:32:18,893 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:32:18,897 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:32:18,897 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:32:13" (1/3) ...
[2022-11-02 20:32:18,898 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328114a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:18, skipping insertion in model container
[2022-11-02 20:32:18,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:14" (2/3) ...
[2022-11-02 20:32:18,899 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328114a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:18, skipping insertion in model container
[2022-11-02 20:32:18,899 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:18" (3/3) ...
[2022-11-02 20:32:18,900 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.loyd.1.prop1-func-interl.c
[2022-11-02 20:32:18,921 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:32:18,921 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:32:18,975 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:32:18,982 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;@7f159f7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:32:18,982 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 20:32:18,987 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:18,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-11-02 20:32:18,994 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:32:18,995 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-11-02 20:32:18,995 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:32:19,001 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:32:19,001 INFO  L85        PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times
[2022-11-02 20:32:19,011 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:32:19,012 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376528474]
[2022-11-02 20:32:19,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:19,013 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:32:19,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:32:20,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:32:20,053 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:32:20,053 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376528474]
[2022-11-02 20:32:20,054 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376528474] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:32:20,055 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:32:20,055 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:32:20,057 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395002382]
[2022-11-02 20:32:20,058 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:32:20,063 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:32:20,064 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:32:20,104 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:32:20,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:32:20,115 INFO  L87              Difference]: Start difference. First operand  has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:21,657 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-11-02 20:32:21,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:32:21,822 INFO  L93              Difference]: Finished difference Result 451 states and 675 transitions.
[2022-11-02 20:32:21,825 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-02 20:32:21,826 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2022-11-02 20:32:21,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:32:21,836 INFO  L225             Difference]: With dead ends: 451
[2022-11-02 20:32:21,837 INFO  L226             Difference]: Without dead ends: 298
[2022-11-02 20:32:21,839 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:32:21,843 INFO  L413           NwaCegarLoop]: 221 mSDtfsCounter, 652 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2022-11-02 20:32:21,844 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 444 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2022-11-02 20:32:21,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 298 states.
[2022-11-02 20:32:21,893 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 153.
[2022-11-02 20:32:21,894 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 153 states, 152 states have (on average 1.480263157894737) internal successors, (225), 152 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:21,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 225 transitions.
[2022-11-02 20:32:21,907 INFO  L78                 Accepts]: Start accepts. Automaton has 153 states and 225 transitions. Word has length 5
[2022-11-02 20:32:21,907 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:32:21,907 INFO  L495      AbstractCegarLoop]: Abstraction has 153 states and 225 transitions.
[2022-11-02 20:32:21,908 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:21,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 153 states and 225 transitions.
[2022-11-02 20:32:21,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-11-02 20:32:21,913 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:32:21,914 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:21,914 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 20:32:21,915 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:32:21,915 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:32:21,915 INFO  L85        PathProgramCache]: Analyzing trace with hash -105678635, now seen corresponding path program 1 times
[2022-11-02 20:32:21,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:32:21,916 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381205717]
[2022-11-02 20:32:21,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:21,917 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:32:22,072 ERROR L245   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:32:22,072 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985109887]
[2022-11-02 20:32:22,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:22,073 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:22,073 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:32:22,079 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:32:22,098 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 20:32:22,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:32:22,956 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:32:22,971 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:32:23,259 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:32:23,259 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:32:23,260 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:32:23,260 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381205717]
[2022-11-02 20:32:23,260 WARN  L310   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:32:23,260 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985109887]
[2022-11-02 20:32:23,261 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [985109887] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:32:23,261 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:32:23,261 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:32:23,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524416018]
[2022-11-02 20:32:23,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:32:23,263 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:32:23,263 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:32:23,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:32:23,264 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:32:23,264 INFO  L87              Difference]: Start difference. First operand 153 states and 225 transitions. Second operand  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:23,711 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:32:23,711 INFO  L93              Difference]: Finished difference Result 682 states and 1009 transitions.
[2022-11-02 20:32:23,712 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-11-02 20:32:23,712 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152
[2022-11-02 20:32:23,713 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:32:23,715 INFO  L225             Difference]: With dead ends: 682
[2022-11-02 20:32:23,716 INFO  L226             Difference]: Without dead ends: 533
[2022-11-02 20:32:23,717 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:32:23,718 INFO  L413           NwaCegarLoop]: 351 mSDtfsCounter, 993 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-11-02 20:32:23,718 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1011 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-11-02 20:32:23,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 533 states.
[2022-11-02 20:32:23,733 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 239.
[2022-11-02 20:32:23,734 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 239 states, 238 states have (on average 1.4831932773109244) internal successors, (353), 238 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:23,736 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 353 transitions.
[2022-11-02 20:32:23,737 INFO  L78                 Accepts]: Start accepts. Automaton has 239 states and 353 transitions. Word has length 152
[2022-11-02 20:32:23,737 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:32:23,737 INFO  L495      AbstractCegarLoop]: Abstraction has 239 states and 353 transitions.
[2022-11-02 20:32:23,738 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:23,738 INFO  L276                IsEmpty]: Start isEmpty. Operand 239 states and 353 transitions.
[2022-11-02 20:32:23,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-11-02 20:32:23,742 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:32:23,742 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:23,792 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-02 20:32:23,954 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:23,955 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:32:23,955 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:32:23,956 INFO  L85        PathProgramCache]: Analyzing trace with hash 455021143, now seen corresponding path program 1 times
[2022-11-02 20:32:23,956 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:32:23,956 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471822074]
[2022-11-02 20:32:23,956 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:23,956 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:32:24,068 ERROR L245   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:32:24,073 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917971753]
[2022-11-02 20:32:24,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:24,074 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:24,074 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:32:24,076 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:32:24,083 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-02 20:32:24,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:32:24,897 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:32:24,906 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:32:25,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:32:25,107 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:32:25,108 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:32:25,108 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471822074]
[2022-11-02 20:32:25,108 WARN  L310   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:32:25,108 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917971753]
[2022-11-02 20:32:25,108 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917971753] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:32:25,109 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:32:25,109 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:32:25,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506693873]
[2022-11-02 20:32:25,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:32:25,110 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:32:25,110 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:32:25,110 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:32:25,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:32:25,111 INFO  L87              Difference]: Start difference. First operand 239 states and 353 transitions. Second operand  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:25,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:32:25,230 INFO  L93              Difference]: Finished difference Result 1068 states and 1582 transitions.
[2022-11-02 20:32:25,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-11-02 20:32:25,231 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152
[2022-11-02 20:32:25,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:32:25,234 INFO  L225             Difference]: With dead ends: 1068
[2022-11-02 20:32:25,235 INFO  L226             Difference]: Without dead ends: 833
[2022-11-02 20:32:25,236 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:32:25,237 INFO  L413           NwaCegarLoop]: 330 mSDtfsCounter, 1009 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:32:25,237 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1050 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:32:25,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 833 states.
[2022-11-02 20:32:25,252 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 355.
[2022-11-02 20:32:25,253 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 355 states, 354 states have (on average 1.4830508474576272) internal successors, (525), 354 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:25,255 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 525 transitions.
[2022-11-02 20:32:25,255 INFO  L78                 Accepts]: Start accepts. Automaton has 355 states and 525 transitions. Word has length 152
[2022-11-02 20:32:25,255 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:32:25,255 INFO  L495      AbstractCegarLoop]: Abstraction has 355 states and 525 transitions.
[2022-11-02 20:32:25,256 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:25,256 INFO  L276                IsEmpty]: Start isEmpty. Operand 355 states and 525 transitions.
[2022-11-02 20:32:25,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-11-02 20:32:25,261 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:32:25,261 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:25,310 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-02 20:32:25,486 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:25,487 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:32:25,487 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:32:25,488 INFO  L85        PathProgramCache]: Analyzing trace with hash -1456021415, now seen corresponding path program 1 times
[2022-11-02 20:32:25,488 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:32:25,488 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985808341]
[2022-11-02 20:32:25,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:25,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:32:25,582 ERROR L245   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:32:25,584 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139418983]
[2022-11-02 20:32:25,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:25,588 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:25,588 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:32:25,589 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:32:25,596 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-02 20:32:26,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:32:26,410 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:32:26,418 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:32:26,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:32:26,465 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:32:26,465 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:32:26,466 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985808341]
[2022-11-02 20:32:26,466 WARN  L310   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-02 20:32:26,466 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139418983]
[2022-11-02 20:32:26,466 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139418983] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:32:26,466 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:32:26,466 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:32:26,467 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525350690]
[2022-11-02 20:32:26,467 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:32:26,467 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:32:26,467 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:32:26,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:32:26,468 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:32:26,468 INFO  L87              Difference]: Start difference. First operand 355 states and 525 transitions. Second operand  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:26,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:32:26,575 INFO  L93              Difference]: Finished difference Result 1432 states and 2116 transitions.
[2022-11-02 20:32:26,576 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-11-02 20:32:26,576 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152
[2022-11-02 20:32:26,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:32:26,580 INFO  L225             Difference]: With dead ends: 1432
[2022-11-02 20:32:26,580 INFO  L226             Difference]: Without dead ends: 1081
[2022-11-02 20:32:26,581 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:32:26,582 INFO  L413           NwaCegarLoop]: 270 mSDtfsCounter, 1041 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:32:26,582 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1056 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:32:26,584 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1081 states.
[2022-11-02 20:32:26,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 363.
[2022-11-02 20:32:26,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 363 states, 362 states have (on average 1.4723756906077348) internal successors, (533), 362 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:26,597 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 533 transitions.
[2022-11-02 20:32:26,598 INFO  L78                 Accepts]: Start accepts. Automaton has 363 states and 533 transitions. Word has length 152
[2022-11-02 20:32:26,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:32:26,598 INFO  L495      AbstractCegarLoop]: Abstraction has 363 states and 533 transitions.
[2022-11-02 20:32:26,598 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:32:26,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 363 states and 533 transitions.
[2022-11-02 20:32:26,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2022-11-02 20:32:26,601 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:32:26,601 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:26,642 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-02 20:32:26,826 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:26,827 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:32:26,827 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:32:26,828 INFO  L85        PathProgramCache]: Analyzing trace with hash 1111800919, now seen corresponding path program 1 times
[2022-11-02 20:32:26,828 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:32:26,828 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095018556]
[2022-11-02 20:32:26,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:26,828 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:32:26,917 ERROR L245   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-02 20:32:26,918 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182741514]
[2022-11-02 20:32:26,918 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:32:26,918 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:32:26,918 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:32:26,919 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:32:26,936 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16813468-13ff-4417-a955-a2d6b72f6dd2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-02 20:32:28,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:32:28,970 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 114 conjunts are in the unsatisfiable core
[2022-11-02 20:32:28,989 INFO  L286         TraceCheckSpWp]: Computing forward predicates...