./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD --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 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a
...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 23:47:23,855 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-28 23:47:23,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 23:47:23,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 23:47:23,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 23:47:23,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 23:47:23,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 23:47:23,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 23:47:23,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 23:47:23,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 23:47:23,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 23:47:23,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 23:47:23,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 23:47:23,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 23:47:23,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 23:47:23,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 23:47:23,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 23:47:23,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 23:47:23,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 23:47:23,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 23:47:23,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 23:47:23,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 23:47:23,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 23:47:23,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 23:47:23,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 23:47:23,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 23:47:23,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 23:47:23,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 23:47:23,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 23:47:23,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 23:47:23,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 23:47:23,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 23:47:23,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 23:47:23,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 23:47:23,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 23:47:23,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 23:47:23,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 23:47:23,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 23:47:23,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 23:47:23,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 23:47:23,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 23:47:23,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-28 23:47:23,969 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-28 23:47:23,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 23:47:23,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 23:47:23,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 23:47:23,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 23:47:23,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-28 23:47:23,972 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-28 23:47:23,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 23:47:23,973 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-28 23:47:23,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-28 23:47:23,973 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-28 23:47:23,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-28 23:47:23,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-28 23:47:23,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 23:47:23,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-28 23:47:23,974 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-28 23:47:23,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-28 23:47:23,974 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-28 23:47:23,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-28 23:47:23,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 23:47:23,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-28 23:47:23,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-28 23:47:23,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:47:23,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 23:47:23,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 23:47:23,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-28 23:47:23,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-28 23:47:23,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 23:47:23,977 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-10-28 23:47:23,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-28 23:47:23,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-28 23:47:23,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-28 23:47:23,978 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_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a
[2021-10-28 23:47:24,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 23:47:24,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 23:47:24,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 23:47:24,278 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-28 23:47:24,279 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-28 23:47:24,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c
[2021-10-28 23:47:24,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/data/2d437bdd8/283714d667564bb4a43ffd2f52e942c7/FLAGcaf9230a9
[2021-10-28 23:47:24,885 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-28 23:47:24,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c
[2021-10-28 23:47:24,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/data/2d437bdd8/283714d667564bb4a43ffd2f52e942c7/FLAGcaf9230a9
[2021-10-28 23:47:25,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/data/2d437bdd8/283714d667564bb4a43ffd2f52e942c7
[2021-10-28 23:47:25,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 23:47:25,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-28 23:47:25,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 23:47:25,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 23:47:25,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 23:47:25,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552a6c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25, skipping insertion in model container
[2021-10-28 23:47:25,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-28 23:47:25,297 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-28 23:47:25,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610]
[2021-10-28 23:47:25,492 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:47:25,501 INFO L203 MainTranslator]: Completed pre-run
[2021-10-28 23:47:25,513 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610]
[2021-10-28 23:47:25,523 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:47:25,540 INFO L208 MainTranslator]: Completed translation
[2021-10-28 23:47:25,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25 WrapperNode
[2021-10-28 23:47:25,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 23:47:25,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-28 23:47:25,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-28 23:47:25,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-28 23:47:25,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-28 23:47:25,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 23:47:25,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 23:47:25,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 23:47:25,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 23:47:25,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 23:47:25,615 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 23:47:25,616 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-28 23:47:25,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (1/1) ...
[2021-10-28 23:47:25,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:47:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:25,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 23:47:25,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 23:47:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-28 23:47:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 23:47:25,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 23:47:25,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 23:47:26,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 23:47:26,052 INFO L299 CfgBuilder]: Removed 9 assume(true) statements.
[2021-10-28 23:47:26,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:26 BoogieIcfgContainer
[2021-10-28 23:47:26,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 23:47:26,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 23:47:26,067 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 23:47:26,071 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-28 23:47:26,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:47:25" (1/3) ...
[2021-10-28 23:47:26,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8815207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:26, skipping insertion in model container
[2021-10-28 23:47:26,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:25" (2/3) ...
[2021-10-28 23:47:26,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8815207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:26, skipping insertion in model container
[2021-10-28 23:47:26,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:26" (3/3) ...
[2021-10-28 23:47:26,075 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound20.c
[2021-10-28 23:47:26,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 23:47:26,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2021-10-28 23:47:26,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 23:47:26,167 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-10-28 23:47:26,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-10-28 23:47:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-10-28 23:47:26,208 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:26,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:26,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash 890461031, now seen corresponding path program 1 times
[2021-10-28 23:47:26,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:26,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513874794]
[2021-10-28 23:47:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:26,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:26,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:26,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513874794]
[2021-10-28 23:47:26,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513874794] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:47:26,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:47:26,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-28 23:47:26,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938586453]
[2021-10-28 23:47:26,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-28 23:47:26,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:26,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-28 23:47:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 23:47:26,405 INFO L87 Difference]: Start difference. First operand has 18 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:26,421 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions.
[2021-10-28 23:47:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-10-28 23:47:26,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2021-10-28 23:47:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:26,431 INFO L225 Difference]: With dead ends: 34
[2021-10-28 23:47:26,432 INFO L226 Difference]: Without dead ends: 14
[2021-10-28 23:47:26,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 23:47:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2021-10-28 23:47:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2021-10-28 23:47:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2021-10-28 23:47:26,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6
[2021-10-28 23:47:26,469 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:26,470 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2021-10-28 23:47:26,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2021-10-28 23:47:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-10-28 23:47:26,471 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:26,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:26,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 23:47:26,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times
[2021-10-28 23:47:26,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:26,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894741161]
[2021-10-28 23:47:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:26,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:26,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:26,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727566493]
[2021-10-28 23:47:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:26,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:26,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:26,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-28 23:47:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:26,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-10-28 23:47:26,620 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:26,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:26,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894741161]
[2021-10-28 23:47:26,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:26,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727566493]
[2021-10-28 23:47:26,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727566493] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:47:26,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:47:26,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-28 23:47:26,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538705303]
[2021-10-28 23:47:26,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 23:47:26,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 23:47:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:47:26,823 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:26,923 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions.
[2021-10-28 23:47:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 23:47:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6
[2021-10-28 23:47:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:26,926 INFO L225 Difference]: With dead ends: 30
[2021-10-28 23:47:26,926 INFO L226 Difference]: Without dead ends: 23
[2021-10-28 23:47:26,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:47:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-10-28 23:47:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18.
[2021-10-28 23:47:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions.
[2021-10-28 23:47:26,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6
[2021-10-28 23:47:26,936 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:26,936 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions.
[2021-10-28 23:47:26,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions.
[2021-10-28 23:47:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-10-28 23:47:26,937 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:26,938 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:26,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2021-10-28 23:47:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:27,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1545533000, now seen corresponding path program 1 times
[2021-10-28 23:47:27,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:27,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114843365]
[2021-10-28 23:47:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:27,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:27,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:27,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608976392]
[2021-10-28 23:47:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:27,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:27,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:27,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:27,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-28 23:47:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:27,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-10-28 23:47:27,250 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:27,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:27,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114843365]
[2021-10-28 23:47:27,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:27,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608976392]
[2021-10-28 23:47:27,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608976392] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:27,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:27,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2021-10-28 23:47:27,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703434304]
[2021-10-28 23:47:27,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:47:27,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:27,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:47:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:47:27,470 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:27,584 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions.
[2021-10-28 23:47:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-10-28 23:47:27,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 12
[2021-10-28 23:47:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:27,586 INFO L225 Difference]: With dead ends: 35
[2021-10-28 23:47:27,586 INFO L226 Difference]: Without dead ends: 33
[2021-10-28 23:47:27,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-10-28 23:47:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23.
[2021-10-28 23:47:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-10-28 23:47:27,593 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2021-10-28 23:47:27,593 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:27,594 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-10-28 23:47:27,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-10-28 23:47:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-10-28 23:47:27,595 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:27,595 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:27,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:27,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:27,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:27,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1602791302, now seen corresponding path program 1 times
[2021-10-28 23:47:27,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:27,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677716480]
[2021-10-28 23:47:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:27,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:27,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:27,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691490033]
[2021-10-28 23:47:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:27,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:27,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:27,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-28 23:47:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:27,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-10-28 23:47:27,942 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:28,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:28,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677716480]
[2021-10-28 23:47:28,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:28,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691490033]
[2021-10-28 23:47:28,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691490033] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:28,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:28,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2021-10-28 23:47:28,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5670894]
[2021-10-28 23:47:28,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:47:28,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:47:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:47:28,192 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:28,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:28,315 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions.
[2021-10-28 23:47:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-10-28 23:47:28,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 12
[2021-10-28 23:47:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:28,319 INFO L225 Difference]: With dead ends: 39
[2021-10-28 23:47:28,319 INFO L226 Difference]: Without dead ends: 33
[2021-10-28 23:47:28,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-10-28 23:47:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28.
[2021-10-28 23:47:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2021-10-28 23:47:28,329 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12
[2021-10-28 23:47:28,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:28,329 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2021-10-28 23:47:28,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2021-10-28 23:47:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-10-28 23:47:28,331 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:28,331 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:28,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:28,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:28,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash -666919436, now seen corresponding path program 1 times
[2021-10-28 23:47:28,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:28,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893432480]
[2021-10-28 23:47:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:28,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:28,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:28,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246796308]
[2021-10-28 23:47:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:28,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:28,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:28,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-28 23:47:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:28,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-28 23:47:28,654 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:28,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:28,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893432480]
[2021-10-28 23:47:28,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:28,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246796308]
[2021-10-28 23:47:28,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246796308] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:28,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:28,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4
[2021-10-28 23:47:28,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858056149]
[2021-10-28 23:47:28,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:47:28,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:47:28,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:47:28,742 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:28,784 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions.
[2021-10-28 23:47:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 23:47:28,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2021-10-28 23:47:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:28,786 INFO L225 Difference]: With dead ends: 32
[2021-10-28 23:47:28,786 INFO L226 Difference]: Without dead ends: 28
[2021-10-28 23:47:28,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:47:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2021-10-28 23:47:28,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2021-10-28 23:47:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2021-10-28 23:47:28,792 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13
[2021-10-28 23:47:28,792 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:28,792 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2021-10-28 23:47:28,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2021-10-28 23:47:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:47:28,793 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:28,794 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:28,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:29,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash -919296115, now seen corresponding path program 1 times
[2021-10-28 23:47:29,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:29,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881427412]
[2021-10-28 23:47:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:29,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:29,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:29,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503552767]
[2021-10-28 23:47:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:29,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:29,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:29,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-10-28 23:47:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:29,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-10-28 23:47:29,132 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:29,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:29,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881427412]
[2021-10-28 23:47:29,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:29,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503552767]
[2021-10-28 23:47:29,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503552767] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:29,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:29,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2021-10-28 23:47:29,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541985508]
[2021-10-28 23:47:29,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-10-28 23:47:29,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-28 23:47:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:29,579 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:29,729 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions.
[2021-10-28 23:47:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-28 23:47:29,730 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 15
[2021-10-28 23:47:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:29,731 INFO L225 Difference]: With dead ends: 38
[2021-10-28 23:47:29,731 INFO L226 Difference]: Without dead ends: 34
[2021-10-28 23:47:29,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2021-10-28 23:47:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-10-28 23:47:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24.
[2021-10-28 23:47:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions.
[2021-10-28 23:47:29,736 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15
[2021-10-28 23:47:29,736 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:29,737 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions.
[2021-10-28 23:47:29,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions.
[2021-10-28 23:47:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-10-28 23:47:29,738 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:29,738 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1]
[2021-10-28 23:47:29,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:29,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:29,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:29,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash -443375322, now seen corresponding path program 2 times
[2021-10-28 23:47:29,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:29,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230403218]
[2021-10-28 23:47:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:29,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:29,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:29,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081350713]
[2021-10-28 23:47:29,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:29,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:29,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:29,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-10-28 23:47:30,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:30,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:30,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-10-28 23:47:30,094 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:30,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:30,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230403218]
[2021-10-28 23:47:30,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:30,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081350713]
[2021-10-28 23:47:30,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081350713] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:30,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:30,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2021-10-28 23:47:30,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013777886]
[2021-10-28 23:47:30,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-10-28 23:47:30,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-28 23:47:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:30,494 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:30,704 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions.
[2021-10-28 23:47:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-10-28 23:47:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 18
[2021-10-28 23:47:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:30,708 INFO L225 Difference]: With dead ends: 46
[2021-10-28 23:47:30,708 INFO L226 Difference]: Without dead ends: 44
[2021-10-28 23:47:30,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210
[2021-10-28 23:47:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-10-28 23:47:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34.
[2021-10-28 23:47:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions.
[2021-10-28 23:47:30,715 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18
[2021-10-28 23:47:30,715 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:30,715 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions.
[2021-10-28 23:47:30,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions.
[2021-10-28 23:47:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-10-28 23:47:30,716 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:30,717 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:30,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:30,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:30,918 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash -500633624, now seen corresponding path program 1 times
[2021-10-28 23:47:30,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:30,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115090137]
[2021-10-28 23:47:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:30,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:30,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:30,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148067186]
[2021-10-28 23:47:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:30,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:30,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:30,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:30,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-10-28 23:47:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:31,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 35 conjunts are in the unsatisfiable core
[2021-10-28 23:47:31,065 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:31,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:31,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115090137]
[2021-10-28 23:47:31,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:31,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148067186]
[2021-10-28 23:47:31,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148067186] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:31,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:31,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2021-10-28 23:47:31,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909975684]
[2021-10-28 23:47:31,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-10-28 23:47:31,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-10-28 23:47:31,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:47:31,819 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:32,522 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions.
[2021-10-28 23:47:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-10-28 23:47:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 18
[2021-10-28 23:47:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:32,523 INFO L225 Difference]: With dead ends: 60
[2021-10-28 23:47:32,524 INFO L226 Difference]: Without dead ends: 48
[2021-10-28 23:47:32,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342
[2021-10-28 23:47:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-10-28 23:47:32,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40.
[2021-10-28 23:47:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions.
[2021-10-28 23:47:32,531 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18
[2021-10-28 23:47:32,531 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:32,532 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions.
[2021-10-28 23:47:32,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions.
[2021-10-28 23:47:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-10-28 23:47:32,533 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:32,533 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:32,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:32,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:32,734 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -701540760, now seen corresponding path program 2 times
[2021-10-28 23:47:32,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:32,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256749291]
[2021-10-28 23:47:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:32,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:32,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:32,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24248584]
[2021-10-28 23:47:32,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:32,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:32,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:32,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:32,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-10-28 23:47:32,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:32,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:32,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-10-28 23:47:32,923 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:33,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:33,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256749291]
[2021-10-28 23:47:33,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:33,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24248584]
[2021-10-28 23:47:33,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24248584] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:33,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:33,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2021-10-28 23:47:33,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345372063]
[2021-10-28 23:47:33,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 23:47:33,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 23:47:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:47:33,195 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:33,401 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions.
[2021-10-28 23:47:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-28 23:47:33,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 18
[2021-10-28 23:47:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:33,404 INFO L225 Difference]: With dead ends: 57
[2021-10-28 23:47:33,404 INFO L226 Difference]: Without dead ends: 55
[2021-10-28 23:47:33,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:47:33,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2021-10-28 23:47:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41.
[2021-10-28 23:47:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions.
[2021-10-28 23:47:33,419 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 18
[2021-10-28 23:47:33,419 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:33,420 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions.
[2021-10-28 23:47:33,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions.
[2021-10-28 23:47:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-10-28 23:47:33,421 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:33,421 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1]
[2021-10-28 23:47:33,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:33,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:33,642 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -758799062, now seen corresponding path program 2 times
[2021-10-28 23:47:33,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:33,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847378413]
[2021-10-28 23:47:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:33,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:33,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:33,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672962924]
[2021-10-28 23:47:33,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:33,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:33,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:33,656 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:33,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-10-28 23:47:33,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:33,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 35 conjunts are in the unsatisfiable core
[2021-10-28 23:47:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:34,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:34,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847378413]
[2021-10-28 23:47:34,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:34,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672962924]
[2021-10-28 23:47:34,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672962924] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:34,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:34,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2021-10-28 23:47:34,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226840203]
[2021-10-28 23:47:34,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-10-28 23:47:34,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-28 23:47:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:47:34,263 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:34,639 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions.
[2021-10-28 23:47:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-10-28 23:47:34,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 18
[2021-10-28 23:47:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:34,641 INFO L225 Difference]: With dead ends: 60
[2021-10-28 23:47:34,641 INFO L226 Difference]: Without dead ends: 54
[2021-10-28 23:47:34,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2021-10-28 23:47:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2021-10-28 23:47:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46.
[2021-10-28 23:47:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions.
[2021-10-28 23:47:34,648 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 18
[2021-10-28 23:47:34,649 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:34,649 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions.
[2021-10-28 23:47:34,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions.
[2021-10-28 23:47:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-10-28 23:47:34,650 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:34,651 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:34,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:34,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-10-28 23:47:34,863 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash -859769786, now seen corresponding path program 2 times
[2021-10-28 23:47:34,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:34,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652551183]
[2021-10-28 23:47:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:34,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:34,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:34,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811482320]
[2021-10-28 23:47:34,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:34,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:34,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:34,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-10-28 23:47:35,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:35,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:35,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-10-28 23:47:35,050 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:35,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:35,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652551183]
[2021-10-28 23:47:35,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:35,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811482320]
[2021-10-28 23:47:35,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811482320] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:35,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:35,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2021-10-28 23:47:35,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315230134]
[2021-10-28 23:47:35,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:47:35,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:35,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:47:35,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:47:35,132 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:35,176 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions.
[2021-10-28 23:47:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-10-28 23:47:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19
[2021-10-28 23:47:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:35,178 INFO L225 Difference]: With dead ends: 50
[2021-10-28 23:47:35,178 INFO L226 Difference]: Without dead ends: 46
[2021-10-28 23:47:35,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:47:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-10-28 23:47:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2021-10-28 23:47:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions.
[2021-10-28 23:47:35,192 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 19
[2021-10-28 23:47:35,193 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:35,193 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions.
[2021-10-28 23:47:35,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions.
[2021-10-28 23:47:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-10-28 23:47:35,195 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:35,195 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:35,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:35,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:35,424 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1564888737, now seen corresponding path program 2 times
[2021-10-28 23:47:35,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:35,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957539429]
[2021-10-28 23:47:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:35,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:35,435 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:35,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864536150]
[2021-10-28 23:47:35,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:35,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:35,437 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:35,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2021-10-28 23:47:35,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:35,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:35,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-10-28 23:47:35,927 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:36,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:36,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957539429]
[2021-10-28 23:47:36,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:36,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864536150]
[2021-10-28 23:47:36,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864536150] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:36,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:36,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2021-10-28 23:47:36,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073295814]
[2021-10-28 23:47:36,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-10-28 23:47:36,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-10-28 23:47:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:47:36,359 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:36,627 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions.
[2021-10-28 23:47:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-10-28 23:47:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-10-28 23:47:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:36,628 INFO L225 Difference]: With dead ends: 61
[2021-10-28 23:47:36,628 INFO L226 Difference]: Without dead ends: 57
[2021-10-28 23:47:36,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2021-10-28 23:47:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2021-10-28 23:47:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46.
[2021-10-28 23:47:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions.
[2021-10-28 23:47:36,635 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 21
[2021-10-28 23:47:36,639 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:36,639 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions.
[2021-10-28 23:47:36,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions.
[2021-10-28 23:47:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-10-28 23:47:36,641 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:36,642 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:36,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:36,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-10-28 23:47:36,847 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -285025059, now seen corresponding path program 1 times
[2021-10-28 23:47:36,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:36,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399402139]
[2021-10-28 23:47:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:36,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:36,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:36,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813313852]
[2021-10-28 23:47:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:36,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:36,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:36,878 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:36,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2021-10-28 23:47:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:37,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-28 23:47:37,080 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:37,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:37,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399402139]
[2021-10-28 23:47:37,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:37,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813313852]
[2021-10-28 23:47:37,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813313852] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:37,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:37,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2021-10-28 23:47:37,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175076243]
[2021-10-28 23:47:37,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-10-28 23:47:37,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-28 23:47:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:47:37,296 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:37,477 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions.
[2021-10-28 23:47:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-10-28 23:47:37,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2021-10-28 23:47:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:37,478 INFO L225 Difference]: With dead ends: 53
[2021-10-28 23:47:37,478 INFO L226 Difference]: Without dead ends: 49
[2021-10-28 23:47:37,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:47:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-10-28 23:47:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42.
[2021-10-28 23:47:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions.
[2021-10-28 23:47:37,484 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 21
[2021-10-28 23:47:37,485 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:37,485 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions.
[2021-10-28 23:47:37,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions.
[2021-10-28 23:47:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-10-28 23:47:37,486 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:37,486 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1]
[2021-10-28 23:47:37,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:37,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-10-28 23:47:37,699 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash -429625836, now seen corresponding path program 3 times
[2021-10-28 23:47:37,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:37,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096626140]
[2021-10-28 23:47:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:37,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:37,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:37,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457113885]
[2021-10-28 23:47:37,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:37,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:37,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:37,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2021-10-28 23:47:38,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-10-28 23:47:38,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:38,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-10-28 23:47:38,416 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-10-28 23:47:38,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:38,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096626140]
[2021-10-28 23:47:38,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:38,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457113885]
[2021-10-28 23:47:38,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457113885] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:38,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:38,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2021-10-28 23:47:38,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126144599]
[2021-10-28 23:47:38,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 23:47:38,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 23:47:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:47:38,631 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:38,870 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions.
[2021-10-28 23:47:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-10-28 23:47:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-10-28 23:47:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:38,871 INFO L225 Difference]: With dead ends: 64
[2021-10-28 23:47:38,871 INFO L226 Difference]: Without dead ends: 62
[2021-10-28 23:47:38,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2021-10-28 23:47:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2021-10-28 23:47:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46.
[2021-10-28 23:47:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions.
[2021-10-28 23:47:38,879 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24
[2021-10-28 23:47:38,880 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:38,880 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions.
[2021-10-28 23:47:38,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions.
[2021-10-28 23:47:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-10-28 23:47:38,881 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:38,881 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1]
[2021-10-28 23:47:38,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2021-10-28 23:47:39,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:39,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash -486884138, now seen corresponding path program 3 times
[2021-10-28 23:47:39,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:39,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659224221]
[2021-10-28 23:47:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:39,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:39,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:39,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419653436]
[2021-10-28 23:47:39,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:39,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:39,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:39,134 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:39,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2021-10-28 23:47:39,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-10-28 23:47:39,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:39,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-10-28 23:47:39,375 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-10-28 23:47:39,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:39,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659224221]
[2021-10-28 23:47:39,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:39,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419653436]
[2021-10-28 23:47:39,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419653436] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:39,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:39,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2021-10-28 23:47:39,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790456444]
[2021-10-28 23:47:39,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:47:39,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:47:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:47:39,522 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:39,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:39,597 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions.
[2021-10-28 23:47:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 23:47:39,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2021-10-28 23:47:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:39,599 INFO L225 Difference]: With dead ends: 47
[2021-10-28 23:47:39,599 INFO L226 Difference]: Without dead ends: 45
[2021-10-28 23:47:39,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-10-28 23:47:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40.
[2021-10-28 23:47:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions.
[2021-10-28 23:47:39,619 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24
[2021-10-28 23:47:39,620 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:39,620 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions.
[2021-10-28 23:47:39,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions.
[2021-10-28 23:47:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-10-28 23:47:39,624 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:39,624 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:39,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:39,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:39,851 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -433535720, now seen corresponding path program 3 times
[2021-10-28 23:47:39,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:39,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904852985]
[2021-10-28 23:47:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:39,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:39,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:39,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819679749]
[2021-10-28 23:47:39,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:39,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:39,881 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:39,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2021-10-28 23:47:40,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-10-28 23:47:40,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:40,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-10-28 23:47:40,090 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:40,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:40,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904852985]
[2021-10-28 23:47:40,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:40,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819679749]
[2021-10-28 23:47:40,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819679749] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:40,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:40,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2021-10-28 23:47:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240870020]
[2021-10-28 23:47:40,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-10-28 23:47:40,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-28 23:47:40,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:47:40,174 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:40,210 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions.
[2021-10-28 23:47:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-28 23:47:40,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2021-10-28 23:47:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:40,210 INFO L225 Difference]: With dead ends: 48
[2021-10-28 23:47:40,211 INFO L226 Difference]: Without dead ends: 44
[2021-10-28 23:47:40,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:47:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-10-28 23:47:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2021-10-28 23:47:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions.
[2021-10-28 23:47:40,215 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 25
[2021-10-28 23:47:40,215 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:40,216 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions.
[2021-10-28 23:47:40,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions.
[2021-10-28 23:47:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-10-28 23:47:40,216 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:40,216 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:40,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:40,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2021-10-28 23:47:40,417 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:40,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash 24155569, now seen corresponding path program 3 times
[2021-10-28 23:47:40,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:40,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622318817]
[2021-10-28 23:47:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:40,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:40,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:40,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716607067]
[2021-10-28 23:47:40,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:40,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:40,427 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:40,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2021-10-28 23:47:41,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-10-28 23:47:41,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:41,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-10-28 23:47:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-10-28 23:47:41,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:41,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622318817]
[2021-10-28 23:47:41,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:41,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716607067]
[2021-10-28 23:47:41,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716607067] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:47:41,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:47:41,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2021-10-28 23:47:41,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380989675]
[2021-10-28 23:47:41,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-10-28 23:47:41,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-28 23:47:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:41,650 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:41,874 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions.
[2021-10-28 23:47:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-10-28 23:47:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 27
[2021-10-28 23:47:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:41,875 INFO L225 Difference]: With dead ends: 84
[2021-10-28 23:47:41,875 INFO L226 Difference]: Without dead ends: 80
[2021-10-28 23:47:41,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210
[2021-10-28 23:47:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2021-10-28 23:47:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 52.
[2021-10-28 23:47:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions.
[2021-10-28 23:47:41,883 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 27
[2021-10-28 23:47:41,883 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:41,883 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions.
[2021-10-28 23:47:41,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions.
[2021-10-28 23:47:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-10-28 23:47:41,884 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:41,884 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:41,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:42,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2021-10-28 23:47:42,095 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:42,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash -655902801, now seen corresponding path program 2 times
[2021-10-28 23:47:42,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:42,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671115273]
[2021-10-28 23:47:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:42,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:42,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:42,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097020056]
[2021-10-28 23:47:42,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:42,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:42,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:42,106 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:42,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2021-10-28 23:47:42,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:42,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:42,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-10-28 23:47:42,406 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:42,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:42,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671115273]
[2021-10-28 23:47:42,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:42,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097020056]
[2021-10-28 23:47:42,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097020056] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:42,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:42,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2021-10-28 23:47:42,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328234528]
[2021-10-28 23:47:42,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-10-28 23:47:42,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-28 23:47:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:42,961 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:43,347 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions.
[2021-10-28 23:47:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-28 23:47:43,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2021-10-28 23:47:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:43,349 INFO L225 Difference]: With dead ends: 70
[2021-10-28 23:47:43,349 INFO L226 Difference]: Without dead ends: 66
[2021-10-28 23:47:43,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2021-10-28 23:47:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58.
[2021-10-28 23:47:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions.
[2021-10-28 23:47:43,356 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 27
[2021-10-28 23:47:43,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:43,357 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions.
[2021-10-28 23:47:43,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions.
[2021-10-28 23:47:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-10-28 23:47:43,358 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:43,358 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:43,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2021-10-28 23:47:43,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2021-10-28 23:47:43,564 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1078604627, now seen corresponding path program 3 times
[2021-10-28 23:47:43,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:43,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594319916]
[2021-10-28 23:47:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:43,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:43,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:43,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255212589]
[2021-10-28 23:47:43,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:43,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:43,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:43,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2021-10-28 23:47:44,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2021-10-28 23:47:44,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:44,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-10-28 23:47:44,290 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-10-28 23:47:44,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:44,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594319916]
[2021-10-28 23:47:44,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:44,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255212589]
[2021-10-28 23:47:44,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255212589] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:47:44,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:47:44,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2021-10-28 23:47:44,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151567086]
[2021-10-28 23:47:44,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 23:47:44,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 23:47:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:47:44,545 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:44,699 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions.
[2021-10-28 23:47:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-28 23:47:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 27
[2021-10-28 23:47:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:44,700 INFO L225 Difference]: With dead ends: 62
[2021-10-28 23:47:44,700 INFO L226 Difference]: Without dead ends: 58
[2021-10-28 23:47:44,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:47:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2021-10-28 23:47:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44.
[2021-10-28 23:47:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions.
[2021-10-28 23:47:44,708 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 27
[2021-10-28 23:47:44,708 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions.
[2021-10-28 23:47:44,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions.
[2021-10-28 23:47:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-10-28 23:47:44,709 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:44,709 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:44,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:44,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:44,910 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1957613462, now seen corresponding path program 4 times
[2021-10-28 23:47:44,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:44,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296584039]
[2021-10-28 23:47:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:44,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:44,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:44,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628904497]
[2021-10-28 23:47:44,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-28 23:47:44,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:44,926 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:44,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2021-10-28 23:47:45,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-28 23:47:45,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:45,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-10-28 23:47:45,219 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:45,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:45,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296584039]
[2021-10-28 23:47:45,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:45,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628904497]
[2021-10-28 23:47:45,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628904497] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:45,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:45,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2021-10-28 23:47:45,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756514856]
[2021-10-28 23:47:45,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 23:47:45,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 23:47:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:47:45,343 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:45,403 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions.
[2021-10-28 23:47:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-10-28 23:47:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31
[2021-10-28 23:47:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:45,413 INFO L225 Difference]: With dead ends: 54
[2021-10-28 23:47:45,413 INFO L226 Difference]: Without dead ends: 50
[2021-10-28 23:47:45,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:47:45,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-10-28 23:47:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2021-10-28 23:47:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions.
[2021-10-28 23:47:45,421 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 31
[2021-10-28 23:47:45,421 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:45,421 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions.
[2021-10-28 23:47:45,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions.
[2021-10-28 23:47:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2021-10-28 23:47:45,423 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:45,423 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:45,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2021-10-28 23:47:45,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:45,646 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:45,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -553888196, now seen corresponding path program 5 times
[2021-10-28 23:47:45,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:45,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668084168]
[2021-10-28 23:47:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:45,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:45,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:45,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694901309]
[2021-10-28 23:47:45,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-28 23:47:45,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:45,661 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:45,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2021-10-28 23:47:45,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-10-28 23:47:45,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:45,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-10-28 23:47:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:46,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:46,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668084168]
[2021-10-28 23:47:46,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:46,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694901309]
[2021-10-28 23:47:46,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694901309] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:46,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:46,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2021-10-28 23:47:46,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147599383]
[2021-10-28 23:47:46,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-10-28 23:47:46,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-28 23:47:46,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:47:46,119 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:46,188 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions.
[2021-10-28 23:47:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2021-10-28 23:47:46,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37
[2021-10-28 23:47:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:46,189 INFO L225 Difference]: With dead ends: 60
[2021-10-28 23:47:46,189 INFO L226 Difference]: Without dead ends: 56
[2021-10-28 23:47:46,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182
[2021-10-28 23:47:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2021-10-28 23:47:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2021-10-28 23:47:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions.
[2021-10-28 23:47:46,198 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 37
[2021-10-28 23:47:46,199 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:46,199 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions.
[2021-10-28 23:47:46,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:46,199 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions.
[2021-10-28 23:47:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2021-10-28 23:47:46,200 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:46,200 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:46,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:46,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:46,412 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash 835999374, now seen corresponding path program 6 times
[2021-10-28 23:47:46,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:46,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350956019]
[2021-10-28 23:47:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:46,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:46,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:46,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041534491]
[2021-10-28 23:47:46,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-28 23:47:46,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:46,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:46,434 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:46,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2021-10-28 23:47:47,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-10-28 23:47:47,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:47,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-10-28 23:47:47,452 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:47,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:47,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350956019]
[2021-10-28 23:47:47,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:47,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041534491]
[2021-10-28 23:47:47,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041534491] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:47,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:47,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2021-10-28 23:47:47,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123104340]
[2021-10-28 23:47:47,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-10-28 23:47:47,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:47,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-28 23:47:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:47:47,615 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:47,686 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions.
[2021-10-28 23:47:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-10-28 23:47:47,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43
[2021-10-28 23:47:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:47,689 INFO L225 Difference]: With dead ends: 66
[2021-10-28 23:47:47,689 INFO L226 Difference]: Without dead ends: 62
[2021-10-28 23:47:47,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240
[2021-10-28 23:47:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2021-10-28 23:47:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2021-10-28 23:47:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions.
[2021-10-28 23:47:47,700 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 43
[2021-10-28 23:47:47,700 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:47,700 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions.
[2021-10-28 23:47:47,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions.
[2021-10-28 23:47:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2021-10-28 23:47:47,701 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:47,701 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:47,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:47,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2021-10-28 23:47:47,910 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash -194293408, now seen corresponding path program 7 times
[2021-10-28 23:47:47,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:47,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900671569]
[2021-10-28 23:47:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:47,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:47,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:47,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003139384]
[2021-10-28 23:47:47,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-28 23:47:47,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:47,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:47,921 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:47,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2021-10-28 23:47:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:48,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-10-28 23:47:48,215 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:48,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:48,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900671569]
[2021-10-28 23:47:48,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:48,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003139384]
[2021-10-28 23:47:48,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003139384] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:48,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:48,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2021-10-28 23:47:48,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429313686]
[2021-10-28 23:47:48,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-10-28 23:47:48,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-28 23:47:48,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2021-10-28 23:47:48,447 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:48,524 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions.
[2021-10-28 23:47:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-10-28 23:47:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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 49
[2021-10-28 23:47:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:48,525 INFO L225 Difference]: With dead ends: 72
[2021-10-28 23:47:48,526 INFO L226 Difference]: Without dead ends: 68
[2021-10-28 23:47:48,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306
[2021-10-28 23:47:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2021-10-28 23:47:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2021-10-28 23:47:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions.
[2021-10-28 23:47:48,535 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 49
[2021-10-28 23:47:48,535 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:48,536 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions.
[2021-10-28 23:47:48,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions.
[2021-10-28 23:47:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2021-10-28 23:47:48,536 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:48,536 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:48,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:48,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:48,737 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash 691758770, now seen corresponding path program 8 times
[2021-10-28 23:47:48,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:48,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550780704]
[2021-10-28 23:47:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:48,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:48,746 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:48,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988916111]
[2021-10-28 23:47:48,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:48,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:48,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:48,747 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:48,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2021-10-28 23:47:49,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:49,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:49,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-10-28 23:47:49,066 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:49,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:49,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550780704]
[2021-10-28 23:47:49,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:49,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988916111]
[2021-10-28 23:47:49,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988916111] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:49,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:49,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2021-10-28 23:47:49,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950152724]
[2021-10-28 23:47:49,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-10-28 23:47:49,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-10-28 23:47:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:47:49,320 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:49,413 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions.
[2021-10-28 23:47:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2021-10-28 23:47:49,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55
[2021-10-28 23:47:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:49,415 INFO L225 Difference]: With dead ends: 78
[2021-10-28 23:47:49,415 INFO L226 Difference]: Without dead ends: 74
[2021-10-28 23:47:49,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380
[2021-10-28 23:47:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2021-10-28 23:47:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2021-10-28 23:47:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions.
[2021-10-28 23:47:49,425 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 55
[2021-10-28 23:47:49,425 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:49,426 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions.
[2021-10-28 23:47:49,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions.
[2021-10-28 23:47:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2021-10-28 23:47:49,427 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:49,427 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:49,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2021-10-28 23:47:49,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2021-10-28 23:47:49,636 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:49,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1453766276, now seen corresponding path program 9 times
[2021-10-28 23:47:49,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:49,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947803215]
[2021-10-28 23:47:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:49,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:49,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:49,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146249679]
[2021-10-28 23:47:49,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:49,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:49,656 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:49,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2021-10-28 23:47:50,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2021-10-28 23:47:50,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:50,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-10-28 23:47:50,051 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:50,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:50,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947803215]
[2021-10-28 23:47:50,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:50,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146249679]
[2021-10-28 23:47:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146249679] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:50,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:50,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2021-10-28 23:47:50,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698933615]
[2021-10-28 23:47:50,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-10-28 23:47:50,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-10-28 23:47:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:47:50,284 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:50,424 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions.
[2021-10-28 23:47:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-10-28 23:47:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61
[2021-10-28 23:47:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:50,425 INFO L225 Difference]: With dead ends: 84
[2021-10-28 23:47:50,425 INFO L226 Difference]: Without dead ends: 80
[2021-10-28 23:47:50,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462
[2021-10-28 23:47:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2021-10-28 23:47:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2021-10-28 23:47:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 79 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions.
[2021-10-28 23:47:50,434 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 61
[2021-10-28 23:47:50,434 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:50,435 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions.
[2021-10-28 23:47:50,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions.
[2021-10-28 23:47:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2021-10-28 23:47:50,435 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:50,435 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:50,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:50,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2021-10-28 23:47:50,636 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash -118005546, now seen corresponding path program 10 times
[2021-10-28 23:47:50,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:50,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412936683]
[2021-10-28 23:47:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:50,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:50,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:50,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519723497]
[2021-10-28 23:47:50,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-28 23:47:50,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:50,660 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:50,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2021-10-28 23:47:51,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-28 23:47:51,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:51,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-10-28 23:47:51,038 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:51,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:51,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412936683]
[2021-10-28 23:47:51,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:51,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519723497]
[2021-10-28 23:47:51,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519723497] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:51,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:51,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2021-10-28 23:47:51,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730257160]
[2021-10-28 23:47:51,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-10-28 23:47:51,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-10-28 23:47:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182
[2021-10-28 23:47:51,374 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:51,527 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions.
[2021-10-28 23:47:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2021-10-28 23:47:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2021-10-28 23:47:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:51,529 INFO L225 Difference]: With dead ends: 90
[2021-10-28 23:47:51,529 INFO L226 Difference]: Without dead ends: 86
[2021-10-28 23:47:51,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552
[2021-10-28 23:47:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2021-10-28 23:47:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2021-10-28 23:47:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions.
[2021-10-28 23:47:51,540 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 67
[2021-10-28 23:47:51,540 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:51,540 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions.
[2021-10-28 23:47:51,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions.
[2021-10-28 23:47:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2021-10-28 23:47:51,547 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:51,547 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:51,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2021-10-28 23:47:51,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2021-10-28 23:47:51,756 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1952417192, now seen corresponding path program 11 times
[2021-10-28 23:47:51,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:51,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019710546]
[2021-10-28 23:47:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:51,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:51,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:51,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036698270]
[2021-10-28 23:47:51,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-28 23:47:51,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:51,779 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:51,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2021-10-28 23:47:53,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s)
[2021-10-28 23:47:53,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:53,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-10-28 23:47:53,101 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:53,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:53,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019710546]
[2021-10-28 23:47:53,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:53,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036698270]
[2021-10-28 23:47:53,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036698270] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:53,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:53,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2021-10-28 23:47:53,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991572963]
[2021-10-28 23:47:53,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-10-28 23:47:53,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-10-28 23:47:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210
[2021-10-28 23:47:53,475 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:53,631 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions.
[2021-10-28 23:47:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-10-28 23:47:53,632 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 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 73
[2021-10-28 23:47:53,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:53,633 INFO L225 Difference]: With dead ends: 96
[2021-10-28 23:47:53,633 INFO L226 Difference]: Without dead ends: 92
[2021-10-28 23:47:53,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650
[2021-10-28 23:47:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2021-10-28 23:47:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2021-10-28 23:47:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions.
[2021-10-28 23:47:53,646 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 73
[2021-10-28 23:47:53,646 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:53,647 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions.
[2021-10-28 23:47:53,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions.
[2021-10-28 23:47:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2021-10-28 23:47:53,648 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:53,648 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:53,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:53,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2021-10-28 23:47:53,858 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2030484230, now seen corresponding path program 12 times
[2021-10-28 23:47:53,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:53,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598935813]
[2021-10-28 23:47:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:53,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:53,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:53,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474782980]
[2021-10-28 23:47:53,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-28 23:47:53,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:53,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:53,879 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:53,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2021-10-28 23:47:55,756 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s)
[2021-10-28 23:47:55,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:55,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-10-28 23:47:55,763 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:56,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:56,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598935813]
[2021-10-28 23:47:56,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:56,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474782980]
[2021-10-28 23:47:56,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474782980] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:56,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:56,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2021-10-28 23:47:56,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038693131]
[2021-10-28 23:47:56,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-10-28 23:47:56,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-10-28 23:47:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240
[2021-10-28 23:47:56,136 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:56,274 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions.
[2021-10-28 23:47:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-10-28 23:47:56,274 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 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 79
[2021-10-28 23:47:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:56,275 INFO L225 Difference]: With dead ends: 102
[2021-10-28 23:47:56,275 INFO L226 Difference]: Without dead ends: 98
[2021-10-28 23:47:56,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756
[2021-10-28 23:47:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2021-10-28 23:47:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98.
[2021-10-28 23:47:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 97 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions.
[2021-10-28 23:47:56,283 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 79
[2021-10-28 23:47:56,283 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:56,283 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions.
[2021-10-28 23:47:56,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions.
[2021-10-28 23:47:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2021-10-28 23:47:56,284 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:56,285 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:56,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:56,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2021-10-28 23:47:56,494 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash 986103500, now seen corresponding path program 13 times
[2021-10-28 23:47:56,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:56,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816951429]
[2021-10-28 23:47:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:56,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:56,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:56,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429204404]
[2021-10-28 23:47:56,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-28 23:47:56,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:56,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:56,503 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:56,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2021-10-28 23:47:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:47:56,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-10-28 23:47:56,932 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:57,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:57,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816951429]
[2021-10-28 23:47:57,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:57,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429204404]
[2021-10-28 23:47:57,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429204404] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:57,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:57,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2021-10-28 23:47:57,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944520413]
[2021-10-28 23:47:57,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2021-10-28 23:47:57,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-10-28 23:47:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272
[2021-10-28 23:47:57,257 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:57,432 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions.
[2021-10-28 23:47:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-10-28 23:47:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 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 85
[2021-10-28 23:47:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:57,433 INFO L225 Difference]: With dead ends: 108
[2021-10-28 23:47:57,434 INFO L226 Difference]: Without dead ends: 104
[2021-10-28 23:47:57,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870
[2021-10-28 23:47:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2021-10-28 23:47:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2021-10-28 23:47:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 103 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions.
[2021-10-28 23:47:57,448 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 85
[2021-10-28 23:47:57,448 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:57,449 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions.
[2021-10-28 23:47:57,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions.
[2021-10-28 23:47:57,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2021-10-28 23:47:57,450 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:57,450 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:57,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2021-10-28 23:47:57,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:57,651 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1471288094, now seen corresponding path program 14 times
[2021-10-28 23:47:57,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:57,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113880076]
[2021-10-28 23:47:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:57,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:57,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:57,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591513090]
[2021-10-28 23:47:57,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:47:57,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:57,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:57,662 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:57,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2021-10-28 23:47:58,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:47:58,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:47:58,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-10-28 23:47:58,108 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:47:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:47:58,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:47:58,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113880076]
[2021-10-28 23:47:58,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:47:58,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591513090]
[2021-10-28 23:47:58,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591513090] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:47:58,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:47:58,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2021-10-28 23:47:58,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190069397]
[2021-10-28 23:47:58,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-10-28 23:47:58,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:47:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-10-28 23:47:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306
[2021-10-28 23:47:58,514 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:47:58,719 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions.
[2021-10-28 23:47:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-10-28 23:47:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 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 91
[2021-10-28 23:47:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:47:58,721 INFO L225 Difference]: With dead ends: 114
[2021-10-28 23:47:58,721 INFO L226 Difference]: Without dead ends: 110
[2021-10-28 23:47:58,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992
[2021-10-28 23:47:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2021-10-28 23:47:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2021-10-28 23:47:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 109 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions.
[2021-10-28 23:47:58,734 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 91
[2021-10-28 23:47:58,734 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:47:58,734 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions.
[2021-10-28 23:47:58,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:47:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions.
[2021-10-28 23:47:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2021-10-28 23:47:58,736 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:47:58,736 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:47:58,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2021-10-28 23:47:58,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:58,951 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:47:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:47:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1435329008, now seen corresponding path program 15 times
[2021-10-28 23:47:58,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:47:58,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858023593]
[2021-10-28 23:47:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:47:58,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:47:58,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:47:58,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031724115]
[2021-10-28 23:47:58,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-28 23:47:58,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:47:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:47:58,962 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:47:58,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2021-10-28 23:48:00,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s)
[2021-10-28 23:48:00,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:48:00,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core
[2021-10-28 23:48:00,987 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:48:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:48:01,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:48:01,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858023593]
[2021-10-28 23:48:01,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:48:01,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031724115]
[2021-10-28 23:48:01,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031724115] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:48:01,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:48:01,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2021-10-28 23:48:01,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278957440]
[2021-10-28 23:48:01,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-10-28 23:48:01,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:48:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-10-28 23:48:01,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342
[2021-10-28 23:48:01,374 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:48:01,598 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions.
[2021-10-28 23:48:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2021-10-28 23:48:01,599 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 18 states have internal predecessors, (97), 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 97
[2021-10-28 23:48:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:48:01,602 INFO L225 Difference]: With dead ends: 120
[2021-10-28 23:48:01,602 INFO L226 Difference]: Without dead ends: 116
[2021-10-28 23:48:01,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122
[2021-10-28 23:48:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2021-10-28 23:48:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116.
[2021-10-28 23:48:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 115 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions.
[2021-10-28 23:48:01,617 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 97
[2021-10-28 23:48:01,617 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:48:01,618 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions.
[2021-10-28 23:48:01,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions.
[2021-10-28 23:48:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2021-10-28 23:48:01,619 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:48:01,619 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:48:01,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2021-10-28 23:48:01,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:01,829 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:48:01,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:48:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash -837629118, now seen corresponding path program 16 times
[2021-10-28 23:48:01,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:48:01,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14299471]
[2021-10-28 23:48:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:48:01,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:48:01,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:48:01,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124196865]
[2021-10-28 23:48:01,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-28 23:48:01,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:48:01,842 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:48:01,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2021-10-28 23:48:02,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-28 23:48:02,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:48:02,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core
[2021-10-28 23:48:02,427 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:48:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:48:02,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:48:02,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14299471]
[2021-10-28 23:48:02,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:48:02,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124196865]
[2021-10-28 23:48:02,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124196865] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:48:02,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:48:02,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2021-10-28 23:48:02,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601092667]
[2021-10-28 23:48:02,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-10-28 23:48:02,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:48:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-10-28 23:48:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380
[2021-10-28 23:48:02,871 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:48:03,150 INFO L93 Difference]: Finished difference Result 126 states and 144 transitions.
[2021-10-28 23:48:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2021-10-28 23:48:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 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 103
[2021-10-28 23:48:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:48:03,152 INFO L225 Difference]: With dead ends: 126
[2021-10-28 23:48:03,152 INFO L226 Difference]: Without dead ends: 122
[2021-10-28 23:48:03,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260
[2021-10-28 23:48:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2021-10-28 23:48:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122.
[2021-10-28 23:48:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 121 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions.
[2021-10-28 23:48:03,172 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 103
[2021-10-28 23:48:03,172 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:48:03,173 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions.
[2021-10-28 23:48:03,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 19 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions.
[2021-10-28 23:48:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2021-10-28 23:48:03,174 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:48:03,174 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:48:03,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2021-10-28 23:48:03,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2021-10-28 23:48:03,383 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:48:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:48:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1860464404, now seen corresponding path program 17 times
[2021-10-28 23:48:03,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:48:03,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788637272]
[2021-10-28 23:48:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:48:03,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:48:03,396 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:48:03,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429451541]
[2021-10-28 23:48:03,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-28 23:48:03,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:03,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:48:03,398 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:48:03,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2021-10-28 23:48:17,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s)
[2021-10-28 23:48:17,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:48:17,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 37 conjunts are in the unsatisfiable core
[2021-10-28 23:48:17,625 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:48:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:48:18,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:48:18,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788637272]
[2021-10-28 23:48:18,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:48:18,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429451541]
[2021-10-28 23:48:18,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429451541] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:48:18,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:48:18,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2021-10-28 23:48:18,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068541831]
[2021-10-28 23:48:18,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-10-28 23:48:18,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:48:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-10-28 23:48:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420
[2021-10-28 23:48:18,063 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 20 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:48:18,347 INFO L93 Difference]: Finished difference Result 132 states and 151 transitions.
[2021-10-28 23:48:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2021-10-28 23:48:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 20 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109
[2021-10-28 23:48:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:48:18,351 INFO L225 Difference]: With dead ends: 132
[2021-10-28 23:48:18,351 INFO L226 Difference]: Without dead ends: 128
[2021-10-28 23:48:18,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406
[2021-10-28 23:48:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2021-10-28 23:48:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128.
[2021-10-28 23:48:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 127 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions.
[2021-10-28 23:48:18,365 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 109
[2021-10-28 23:48:18,365 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:48:18,365 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions.
[2021-10-28 23:48:18,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 20 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions.
[2021-10-28 23:48:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2021-10-28 23:48:18,366 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:48:18,366 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:48:18,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2021-10-28 23:48:18,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:18,567 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:48:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:48:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1804365158, now seen corresponding path program 18 times
[2021-10-28 23:48:18,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:48:18,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443242962]
[2021-10-28 23:48:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:48:18,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:48:18,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:48:18,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568806986]
[2021-10-28 23:48:18,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-28 23:48:18,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:18,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:48:18,581 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:48:18,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2021-10-28 23:48:21,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s)
[2021-10-28 23:48:21,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-28 23:48:21,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 39 conjunts are in the unsatisfiable core
[2021-10-28 23:48:21,497 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:48:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:48:21,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:48:21,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443242962]
[2021-10-28 23:48:21,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:48:22,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568806986]
[2021-10-28 23:48:22,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568806986] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:48:22,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:48:22,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2021-10-28 23:48:22,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34144488]
[2021-10-28 23:48:22,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-10-28 23:48:22,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:48:22,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-10-28 23:48:22,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462
[2021-10-28 23:48:22,002 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:48:22,265 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions.
[2021-10-28 23:48:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-10-28 23:48:22,266 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 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 115
[2021-10-28 23:48:22,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:48:22,267 INFO L225 Difference]: With dead ends: 138
[2021-10-28 23:48:22,267 INFO L226 Difference]: Without dead ends: 134
[2021-10-28 23:48:22,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560
[2021-10-28 23:48:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2021-10-28 23:48:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2021-10-28 23:48:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 133 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions.
[2021-10-28 23:48:22,283 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 115
[2021-10-28 23:48:22,283 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:48:22,283 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions.
[2021-10-28 23:48:22,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions.
[2021-10-28 23:48:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2021-10-28 23:48:22,285 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:48:22,285 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:48:22,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2021-10-28 23:48:22,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2021-10-28 23:48:22,496 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:48:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:48:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1870456376, now seen corresponding path program 19 times
[2021-10-28 23:48:22,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:48:22,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092484889]
[2021-10-28 23:48:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:48:22,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:48:22,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:48:22,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024521114]
[2021-10-28 23:48:22,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-28 23:48:22,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:48:22,508 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:48:22,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2021-10-28 23:48:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:48:23,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 41 conjunts are in the unsatisfiable core
[2021-10-28 23:48:23,150 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:48:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:48:23,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:48:23,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092484889]
[2021-10-28 23:48:23,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-10-28 23:48:23,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024521114]
[2021-10-28 23:48:23,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024521114] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:48:23,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:48:23,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2021-10-28 23:48:23,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687684385]
[2021-10-28 23:48:23,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-10-28 23:48:23,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:48:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-10-28 23:48:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506
[2021-10-28 23:48:23,794 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:48:24,131 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions.
[2021-10-28 23:48:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2021-10-28 23:48:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 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 121
[2021-10-28 23:48:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:48:24,132 INFO L225 Difference]: With dead ends: 144
[2021-10-28 23:48:24,132 INFO L226 Difference]: Without dead ends: 140
[2021-10-28 23:48:24,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722
[2021-10-28 23:48:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2021-10-28 23:48:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140.
[2021-10-28 23:48:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.158273381294964) internal successors, (161), 139 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 161 transitions.
[2021-10-28 23:48:24,148 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 161 transitions. Word has length 121
[2021-10-28 23:48:24,148 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:48:24,148 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 161 transitions.
[2021-10-28 23:48:24,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-28 23:48:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 161 transitions.
[2021-10-28 23:48:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2021-10-28 23:48:24,150 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:48:24,150 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:48:24,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2021-10-28 23:48:24,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2021-10-28 23:48:24,356 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-28 23:48:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:48:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash 269482378, now seen corresponding path program 20 times
[2021-10-28 23:48:24,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:48:24,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144483596]
[2021-10-28 23:48:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:48:24,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:48:24,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-10-28 23:48:24,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094810412]
[2021-10-28 23:48:24,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-28 23:48:24,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:48:24,369 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:48:24,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2021-10-28 23:48:25,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-28 23:48:25,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2021-10-28 23:48:25,332 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-28 23:48:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:48:25,747 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-28 23:48:25,747 INFO L627 BasicCegarLoop]: Counterexample is feasible
[2021-10-28 23:48:25,748 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:48:25,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 23:48:25,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0
[2021-10-28 23:48:25,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:48:25,963 INFO L731 BasicCegarLoop]: Path program histogram: [20, 3, 3, 3, 3, 2, 1, 1]
[2021-10-28 23:48:25,967 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 23:48:26,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:48:26 BoogieIcfgContainer
[2021-10-28 23:48:26,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 23:48:26,108 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 23:48:26,108 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-28 23:48:26,108 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-28 23:48:26,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:26" (3/4) ...
[2021-10-28 23:48:26,111 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-28 23:48:26,205 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 23:48:26,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 23:48:26,208 INFO L168 Benchmark]: Toolchain (without parser) took 60949.91 ms. Allocated memory was 81.8 MB in the beginning and 174.1 MB in the end (delta: 92.3 MB). Free memory was 43.9 MB in the beginning and 75.4 MB in the end (delta: -31.5 MB). Peak memory consumption was 60.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,208 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.52 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.7 MB in the beginning and 74.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 72.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,209 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 72.2 MB in the end (delta: 705.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,210 INFO L168 Benchmark]: RCFGBuilder took 440.02 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 62.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,210 INFO L168 Benchmark]: TraceAbstraction took 60050.85 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 61.7 MB in the beginning and 86.8 MB in the end (delta: -25.0 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,210 INFO L168 Benchmark]: Witness Printer took 97.55 ms. Allocated memory is still 174.1 MB. Free memory was 85.9 MB in the beginning and 75.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-28 23:48:26,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 283.52 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.7 MB in the beginning and 74.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 72.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 26.54 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 72.2 MB in the end (delta: 705.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 440.02 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 62.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 60050.85 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 61.7 MB in the beginning and 86.8 MB in the end (delta: -25.0 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.1 GB.
* Witness Printer took 97.55 ms. Allocated memory is still 174.1 MB. Free memory was 85.9 MB in the beginning and 75.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 16]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L21] int counter = 0;
VAL [counter=0]
[L23] int X, Y;
[L24] long long x, y, v, xy, yx;
[L25] X = __VERIFIER_nondet_int()
[L26] Y = __VERIFIER_nondet_int()
[L27] v = ((long long) 2 * Y) - X
[L28] y = 0
[L29] x = 0
VAL [counter=0]
[L31] EXPR counter++
VAL [counter=1]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=1]
[L35] COND FALSE !(!(x <= X))
VAL [counter=1]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=1]
[L45] x++
VAL [counter=1]
[L31] EXPR counter++
VAL [counter=2]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=2]
[L35] COND FALSE !(!(x <= X))
VAL [counter=2]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=2]
[L45] x++
VAL [counter=2]
[L31] EXPR counter++
VAL [counter=3]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=3]
[L35] COND FALSE !(!(x <= X))
VAL [counter=3]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=3]
[L45] x++
VAL [counter=3]
[L31] EXPR counter++
VAL [counter=4]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=4]
[L35] COND FALSE !(!(x <= X))
VAL [counter=4]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=4]
[L45] x++
VAL [counter=4]
[L31] EXPR counter++
VAL [counter=5]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=5]
[L35] COND FALSE !(!(x <= X))
VAL [counter=5]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=5]
[L45] x++
VAL [counter=5]
[L31] EXPR counter++
VAL [counter=6]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=6]
[L35] COND FALSE !(!(x <= X))
VAL [counter=6]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=6]
[L45] x++
VAL [counter=6]
[L31] EXPR counter++
VAL [counter=7]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=7]
[L35] COND FALSE !(!(x <= X))
VAL [counter=7]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=7]
[L45] x++
VAL [counter=7]
[L31] EXPR counter++
VAL [counter=8]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=8]
[L35] COND FALSE !(!(x <= X))
VAL [counter=8]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=8]
[L45] x++
VAL [counter=8]
[L31] EXPR counter++
VAL [counter=9]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=9]
[L35] COND FALSE !(!(x <= X))
VAL [counter=9]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=9]
[L45] x++
VAL [counter=9]
[L31] EXPR counter++
VAL [counter=10]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=10]
[L35] COND FALSE !(!(x <= X))
VAL [counter=10]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=10]
[L45] x++
VAL [counter=10]
[L31] EXPR counter++
VAL [counter=11]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=11]
[L35] COND FALSE !(!(x <= X))
VAL [counter=11]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=11]
[L45] x++
VAL [counter=11]
[L31] EXPR counter++
VAL [counter=12]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=12]
[L35] COND FALSE !(!(x <= X))
VAL [counter=12]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=12]
[L45] x++
VAL [counter=12]
[L31] EXPR counter++
VAL [counter=13]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=13]
[L35] COND FALSE !(!(x <= X))
VAL [counter=13]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=13]
[L45] x++
VAL [counter=13]
[L31] EXPR counter++
VAL [counter=14]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=14]
[L35] COND FALSE !(!(x <= X))
VAL [counter=14]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=14]
[L45] x++
VAL [counter=14]
[L31] EXPR counter++
VAL [counter=15]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=15]
[L35] COND FALSE !(!(x <= X))
VAL [counter=15]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=15]
[L45] x++
VAL [counter=15]
[L31] EXPR counter++
VAL [counter=16]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=16]
[L35] COND FALSE !(!(x <= X))
VAL [counter=16]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=16]
[L45] x++
VAL [counter=16]
[L31] EXPR counter++
VAL [counter=17]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=17]
[L35] COND FALSE !(!(x <= X))
VAL [counter=17]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=17]
[L45] x++
VAL [counter=17]
[L31] EXPR counter++
VAL [counter=18]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=18]
[L35] COND FALSE !(!(x <= X))
VAL [counter=18]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=18]
[L45] x++
VAL [counter=18]
[L31] EXPR counter++
VAL [counter=19]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=19]
[L35] COND FALSE !(!(x <= X))
VAL [counter=19]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=19]
[L45] x++
VAL [counter=19]
[L31] EXPR counter++
VAL [counter=20]
[L31] COND TRUE counter++<20
[L32] yx = (long long) Y*x
[L33] xy = (long long) X*y
[L14] COND FALSE !(!(cond))
VAL [counter=20]
[L35] COND FALSE !(!(x <= X))
VAL [counter=20]
[L39] COND FALSE !(v < 0)
[L42] v = v + 2 * ((long long) Y - X)
[L43] y++
VAL [counter=20]
[L45] x++
VAL [counter=20]
[L31] EXPR counter++
VAL [counter=21]
[L31] COND FALSE !(counter++<20)
[L47] xy = (long long) x*y
[L48] yx = (long long) Y*x
[L14] COND TRUE !(cond)
VAL [counter=21]
[L16] reach_error()
VAL [counter=21]
- UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 59.8s, OverallIterations: 36, TraceHistogramMax: 21, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 434 SDtfs, 666 SDslu, 2272 SDs, 0 SdLazy, 1893 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1785 GetRequests, 1216 SyntacticMatches, 0 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=35, InterpolantAutomatonStates: 603, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 35 MinimizatonAttempts, 159 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 24.1s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 1694 NumberOfCodeBlocks, 1646 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 1532 ConstructedInterpolants, 0 QuantifiedInterpolants, 7216 SizeOfPredicates, 342 NumberOfNonLiveVariables, 6848 ConjunctsInSsa, 791 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 112/7450 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2021-10-28 23:48:26,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d9f02fc-2d55-4097-85ca-64ea4e164a22/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...