./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 86f9a9405675d4b21cb240ccea7622953d206e12e477e20eacb84951191b2db2
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 20:40:38,875 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:40:38,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:40:38,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:40:38,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:40:38,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:40:38,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:40:38,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:40:38,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:40:38,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:40:38,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:40:38,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:40:38,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:40:38,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:40:38,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:40:38,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:40:38,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:40:38,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:40:38,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:40:38,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:40:38,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:40:38,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:40:38,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:40:38,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:40:38,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:40:38,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:40:38,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:40:38,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:40:38,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:40:38,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:40:38,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:40:38,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:40:38,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:40:38,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:40:38,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:40:38,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:40:39,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:40:39,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:40:39,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:40:39,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:40:39,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:40:39,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf
[2022-11-02 20:40:39,040 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 20:40:39,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:40:39,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:40:39,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:40:39,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:40:39,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:40:39,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:40:39,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 20:40:39,043 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 20:40:39,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:40:39,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 20:40:39,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 20:40:39,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:40:39,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:40:39,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:40:39,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 20:40:39,046 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 20:40:39,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:40:39,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:40:39,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 20:40:39,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 20:40:39,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:40:39,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:40:39,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:40:39,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:40:39,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 20:40:39,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:40:39,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:40:39,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:40:39,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:40:39,048 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_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86f9a9405675d4b21cb240ccea7622953d206e12e477e20eacb84951191b2db2
[2022-11-02 20:40:39,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:40:39,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:40:39,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:40:39,380 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 20:40:39,381 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 20:40:39,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c
[2022-11-02 20:40:39,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/e878f07ed/f6a37c25ef90464192521117c4bb1fcc/FLAGf3adabd13
[2022-11-02 20:40:39,928 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 20:40:39,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c
[2022-11-02 20:40:39,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/e878f07ed/f6a37c25ef90464192521117c4bb1fcc/FLAGf3adabd13
[2022-11-02 20:40:40,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/e878f07ed/f6a37c25ef90464192521117c4bb1fcc
[2022-11-02 20:40:40,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:40:40,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:40:40,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:40:40,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:40:40,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:40:40,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68741554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40, skipping insertion in model container
[2022-11-02 20:40:40,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 20:40:40,331 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:40:40,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1107,1120]
[2022-11-02 20:40:40,566 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:40:40,569 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 20:40:40,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1107,1120]
[2022-11-02 20:40:40,621 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:40:40,634 INFO L208 MainTranslator]: Completed translation
[2022-11-02 20:40:40,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40 WrapperNode
[2022-11-02 20:40:40,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:40:40,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:40:40,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:40:40,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:40:40,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,712 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 236
[2022-11-02 20:40:40,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:40:40,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:40:40,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:40:40,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:40:40,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:40:40,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:40:40,761 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:40:40,761 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:40:40,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (1/1) ...
[2022-11-02 20:40:40,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:40:40,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:40:40,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:40,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:40:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:40:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:40:41,003 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 20:40:41,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:40:41,479 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 20:40:41,488 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:40:41,489 INFO L300 CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 20:40:41,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:41 BoogieIcfgContainer
[2022-11-02 20:40:41,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:40:41,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:40:41,494 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:40:41,498 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:40:41,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:40:40" (1/3) ...
[2022-11-02 20:40:41,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265444b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:41, skipping insertion in model container
[2022-11-02 20:40:41,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:40" (2/3) ...
[2022-11-02 20:40:41,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265444b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:41, skipping insertion in model container
[2022-11-02 20:40:41,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:41" (3/3) ...
[2022-11-02 20:40:41,502 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c
[2022-11-02 20:40:41,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:40:41,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:40:41,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:40:41,606 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@86d3c7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:40:41,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 20:40:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-11-02 20:40:41,619 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:41,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-11-02 20:40:41,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times
[2022-11-02 20:40:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:40:41,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808190927]
[2022-11-02 20:40:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:40:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:40:41,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 20:40:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:40:42,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 20:40:42,049 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 20:40:42,050 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-11-02 20:40:42,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 20:40:42,054 INFO L444 BasicCegarLoop]: Path program histogram: [1]
[2022-11-02 20:40:42,058 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-02 20:40:42,072 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null
[2022-11-02 20:40:42,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:40:42 BoogieIcfgContainer
[2022-11-02 20:40:42,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-02 20:40:42,080 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-02 20:40:42,080 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-02 20:40:42,080 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-02 20:40:42,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:41" (3/4) ...
[2022-11-02 20:40:42,083 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2022-11-02 20:40:42,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-02 20:40:42,085 INFO L158 Benchmark]: Toolchain (without parser) took 1788.59ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 74.7MB in the beginning and 96.7MB in the end (delta: -22.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
[2022-11-02 20:40:42,085 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:40:42,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.34ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 74.4MB in the beginning and 107.1MB in the end (delta: -32.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 20:40:42,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.16ms. Allocated memory is still 136.3MB. Free memory was 107.1MB in the beginning and 103.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 20:40:42,087 INFO L158 Benchmark]: Boogie Preprocessor took 44.12ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 20:40:42,088 INFO L158 Benchmark]: RCFGBuilder took 731.13ms. Allocated memory is still 136.3MB. Free memory was 101.6MB in the beginning and 80.2MB in the end (delta: 21.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB.
[2022-11-02 20:40:42,089 INFO L158 Benchmark]: TraceAbstraction took 585.02ms. Allocated memory is still 136.3MB. Free memory was 79.3MB in the beginning and 96.7MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:40:42,089 INFO L158 Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 136.3MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:40:42,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 338.34ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 74.4MB in the beginning and 107.1MB in the end (delta: -32.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 78.16ms. Allocated memory is still 136.3MB. Free memory was 107.1MB in the beginning and 103.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 44.12ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 731.13ms. Allocated memory is still 136.3MB. Free memory was 101.6MB in the beginning and 80.2MB in the end (delta: 21.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB.
* TraceAbstraction took 585.02ms. Allocated memory is still 136.3MB. Free memory was 79.3MB in the beginning and 96.7MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 4.17ms. Allocated memory is still 136.3MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of bitwiseComplement at line 71, overapproximation of bitwiseAnd at line 64.
Possible FailurePath:
[L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1);
[L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1);
[L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 8);
[L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1);
[L31] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 2);
[L32] const SORT_16 msb_SORT_16 = (SORT_16)1 << (2 - 1);
[L34] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 32);
[L35] const SORT_44 msb_SORT_44 = (SORT_44)1 << (32 - 1);
[L37] const SORT_4 var_5 = 0;
[L38] const SORT_4 var_8 = 255;
[L39] const SORT_1 var_12 = 1;
[L40] const SORT_16 var_17 = 0;
[L41] const SORT_4 var_21 = 1;
[L42] const SORT_4 var_23 = 63;
[L43] const SORT_4 var_29 = 7;
[L44] const SORT_16 var_35 = 2;
[L45] const SORT_16 var_38 = 1;
[L46] const SORT_44 var_45 = 0;
[L47] const SORT_44 var_46 = 1;
[L48] const SORT_44 var_52 = 2;
[L50] SORT_1 input_2;
[L51] SORT_1 input_3;
[L53] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4;
[L54] SORT_16 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_16;
[L56] SORT_4 init_7_arg_1 = var_5;
[L57] state_6 = init_7_arg_1
[L58] SORT_16 init_19_arg_1 = var_17;
[L59] state_18 = init_19_arg_1
VAL [init_19_arg_1=0, init_7_arg_1=0, mask_SORT_1=1, mask_SORT_16=3, mask_SORT_4=255, mask_SORT_44=4294967295, msb_SORT_1=1, msb_SORT_16=2, msb_SORT_4=128, msb_SORT_44=2147483648, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_5=0, var_52=2, var_8=255]
[L62] input_2 = __VERIFIER_nondet_uchar()
[L63] input_3 = __VERIFIER_nondet_uchar()
[L64] input_3 = input_3 & mask_SORT_1
[L67] SORT_4 var_9_arg_0 = state_6;
[L68] SORT_4 var_9_arg_1 = var_8;
[L69] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1;
[L70] SORT_1 var_13_arg_0 = var_9;
[L71] SORT_1 var_13 = ~var_13_arg_0;
[L72] SORT_1 var_14_arg_0 = var_12;
[L73] SORT_1 var_14_arg_1 = var_13;
[L74] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1;
[L75] var_14 = var_14 & mask_SORT_1
[L76] SORT_1 bad_15_arg_0 = var_14;
[L77] CALL __VERIFIER_assert(!(bad_15_arg_0))
[L20] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L20] reach_error()
VAL [\old(cond)=0, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2022-11-02 20:40:42,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 86f9a9405675d4b21cb240ccea7622953d206e12e477e20eacb84951191b2db2
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 20:40:44,509 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:40:44,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:40:44,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:40:44,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:40:44,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:40:44,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:40:44,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:40:44,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:40:44,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:40:44,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:40:44,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:40:44,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:40:44,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:40:44,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:40:44,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:40:44,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:40:44,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:40:44,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:40:44,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:40:44,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:40:44,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:40:44,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:40:44,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:40:44,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:40:44,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:40:44,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:40:44,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:40:44,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:40:44,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:40:44,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:40:44,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:40:44,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:40:44,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:40:44,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:40:44,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:40:44,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:40:44,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:40:44,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:40:44,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:40:44,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:40:44,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-11-02 20:40:44,635 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 20:40:44,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:40:44,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:40:44,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:40:44,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:40:44,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:40:44,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:40:44,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 20:40:44,639 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 20:40:44,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:40:44,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 20:40:44,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:40:44,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:40:44,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:40:44,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2022-11-02 20:40:44,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2022-11-02 20:40:44,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2022-11-02 20:40:44,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 20:40:44,643 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 20:40:44,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:40:44,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:40:44,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 20:40:44,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 20:40:44,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:40:44,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:40:44,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:40:44,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:40:44,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2022-11-02 20:40:44,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2022-11-02 20:40:44,647 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:40:44,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:40:44,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:40:44,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-02 20:40:44,648 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86f9a9405675d4b21cb240ccea7622953d206e12e477e20eacb84951191b2db2
[2022-11-02 20:40:45,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:40:45,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:40:45,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:40:45,059 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 20:40:45,060 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 20:40:45,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c
[2022-11-02 20:40:45,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/f182a77e0/1a9f76fb453446fe801a584bbe70d819/FLAG6547db3c4
[2022-11-02 20:40:45,785 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 20:40:45,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c
[2022-11-02 20:40:45,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/f182a77e0/1a9f76fb453446fe801a584bbe70d819/FLAG6547db3c4
[2022-11-02 20:40:46,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/data/f182a77e0/1a9f76fb453446fe801a584bbe70d819
[2022-11-02 20:40:46,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:40:46,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:40:46,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:40:46,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:40:46,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:40:46,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b19360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46, skipping insertion in model container
[2022-11-02 20:40:46,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 20:40:46,173 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:40:46,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1107,1120]
[2022-11-02 20:40:46,370 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:40:46,374 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 20:40:46,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c[1107,1120]
[2022-11-02 20:40:46,459 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:40:46,480 INFO L208 MainTranslator]: Completed translation
[2022-11-02 20:40:46,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46 WrapperNode
[2022-11-02 20:40:46,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:40:46,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:40:46,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:40:46,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:40:46,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,553 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 236
[2022-11-02 20:40:46,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:40:46,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:40:46,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:40:46,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:40:46,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:40:46,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:40:46,624 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:40:46,624 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:40:46,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (1/1) ...
[2022-11-02 20:40:46,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:40:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:40:46,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:46,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:40:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:40:46,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:40:46,835 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 20:40:46,837 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:40:47,356 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 20:40:47,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:40:47,373 INFO L300 CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 20:40:47,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:47 BoogieIcfgContainer
[2022-11-02 20:40:47,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:40:47,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:40:47,379 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:40:47,382 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:40:47,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:40:46" (1/3) ...
[2022-11-02 20:40:47,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ede5f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:47, skipping insertion in model container
[2022-11-02 20:40:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:46" (2/3) ...
[2022-11-02 20:40:47,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ede5f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:47, skipping insertion in model container
[2022-11-02 20:40:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:47" (3/3) ...
[2022-11-02 20:40:47,387 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c
[2022-11-02 20:40:47,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:40:47,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:40:47,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:40:47,504 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e74e7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:40:47,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 20:40:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-11-02 20:40:47,516 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:47,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-11-02 20:40:47,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times
[2022-11-02 20:40:47,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:47,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855132096]
[2022-11-02 20:40:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:47,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:47,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:47,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-11-02 20:40:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:47,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-11-02 20:40:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:47,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:47,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855132096]
[2022-11-02 20:40:47,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855132096] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:47,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:47,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:40:47,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633965961]
[2022-11-02 20:40:47,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:40:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:40:47,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:40:47,965 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:48,075 INFO L93 Difference]: Finished difference Result 104 states and 156 transitions.
[2022-11-02 20:40:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:40:48,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2022-11-02 20:40:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:48,088 INFO L225 Difference]: With dead ends: 104
[2022-11-02 20:40:48,088 INFO L226 Difference]: Without dead ends: 67
[2022-11-02 20:40:48,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:48,095 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 88 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:48,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2022-11-02 20:40:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37.
[2022-11-02 20:40:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 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)
[2022-11-02 20:40:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions.
[2022-11-02 20:40:48,135 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 5
[2022-11-02 20:40:48,135 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:48,136 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions.
[2022-11-02 20:40:48,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions.
[2022-11-02 20:40:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:48,137 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:48,138 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:48,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-11-02 20:40:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:48,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash 129006159, now seen corresponding path program 1 times
[2022-11-02 20:40:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:48,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430978097]
[2022-11-02 20:40:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:48,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:48,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:48,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:48,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-11-02 20:40:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:48,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:40:48,554 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:48,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:48,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:48,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430978097]
[2022-11-02 20:40:48,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430978097] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:48,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:48,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:40:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894912261]
[2022-11-02 20:40:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:48,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:40:48,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:40:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:40:48,632 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:48,743 INFO L93 Difference]: Finished difference Result 106 states and 149 transitions.
[2022-11-02 20:40:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:40:48,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:48,746 INFO L225 Difference]: With dead ends: 106
[2022-11-02 20:40:48,746 INFO L226 Difference]: Without dead ends: 73
[2022-11-02 20:40:48,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:48,749 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 84 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:48,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 126 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:48,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2022-11-02 20:40:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41.
[2022-11-02 20:40:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.4) internal successors, (56), 40 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)
[2022-11-02 20:40:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions.
[2022-11-02 20:40:48,758 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 36
[2022-11-02 20:40:48,759 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:48,759 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions.
[2022-11-02 20:40:48,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions.
[2022-11-02 20:40:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:48,761 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:48,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:48,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:48,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:48,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:48,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1257197235, now seen corresponding path program 1 times
[2022-11-02 20:40:48,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:48,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780246788]
[2022-11-02 20:40:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:48,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:48,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:48,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:49,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-11-02 20:40:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-11-02 20:40:49,166 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:49,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:49,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:49,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780246788]
[2022-11-02 20:40:49,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780246788] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:49,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:49,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:40:49,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004335775]
[2022-11-02 20:40:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:40:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:40:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:49,272 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:49,400 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions.
[2022-11-02 20:40:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:40:49,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:49,406 INFO L225 Difference]: With dead ends: 136
[2022-11-02 20:40:49,407 INFO L226 Difference]: Without dead ends: 103
[2022-11-02 20:40:49,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:40:49,412 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 165 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:49,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 249 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-11-02 20:40:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 43.
[2022-11-02 20:40:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions.
[2022-11-02 20:40:49,427 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 36
[2022-11-02 20:40:49,427 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:49,428 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions.
[2022-11-02 20:40:49,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions.
[2022-11-02 20:40:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:49,429 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:49,429 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:49,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:49,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash 666030799, now seen corresponding path program 1 times
[2022-11-02 20:40:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:49,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935568223]
[2022-11-02 20:40:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:49,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:49,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:49,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-11-02 20:40:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:49,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-11-02 20:40:49,767 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:49,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:49,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:49,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935568223]
[2022-11-02 20:40:49,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935568223] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:49,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:49,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:40:49,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792383698]
[2022-11-02 20:40:49,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:49,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:40:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:49,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:40:49,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:49,897 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:50,052 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions.
[2022-11-02 20:40:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:40:50,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:50,054 INFO L225 Difference]: With dead ends: 136
[2022-11-02 20:40:50,054 INFO L226 Difference]: Without dead ends: 103
[2022-11-02 20:40:50,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:40:50,055 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 148 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:50,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 235 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-11-02 20:40:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 49.
[2022-11-02 20:40:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 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)
[2022-11-02 20:40:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions.
[2022-11-02 20:40:50,064 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 36
[2022-11-02 20:40:50,065 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:50,065 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions.
[2022-11-02 20:40:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions.
[2022-11-02 20:40:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:50,067 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:50,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:50,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:50,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:50,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1088732625, now seen corresponding path program 1 times
[2022-11-02 20:40:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:50,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582544836]
[2022-11-02 20:40:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:50,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:50,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-11-02 20:40:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:50,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:40:50,467 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:50,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:50,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:50,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582544836]
[2022-11-02 20:40:50,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582544836] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:50,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:50,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:40:50,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083766738]
[2022-11-02 20:40:50,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:40:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:50,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:40:50,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:40:50,640 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:50,737 INFO L93 Difference]: Finished difference Result 120 states and 167 transitions.
[2022-11-02 20:40:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:40:50,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:50,739 INFO L225 Difference]: With dead ends: 120
[2022-11-02 20:40:50,739 INFO L226 Difference]: Without dead ends: 87
[2022-11-02 20:40:50,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:50,741 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 67 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:50,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 139 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2022-11-02 20:40:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55.
[2022-11-02 20:40:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions.
[2022-11-02 20:40:50,755 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 36
[2022-11-02 20:40:50,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:50,755 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions.
[2022-11-02 20:40:50,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions.
[2022-11-02 20:40:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:50,756 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:50,756 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:50,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:50,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:50,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1926370993, now seen corresponding path program 1 times
[2022-11-02 20:40:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:50,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499976733]
[2022-11-02 20:40:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:50,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:50,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:50,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:50,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2022-11-02 20:40:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:51,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-11-02 20:40:51,121 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:51,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:51,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:51,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499976733]
[2022-11-02 20:40:51,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499976733] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:51,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:51,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:40:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524159450]
[2022-11-02 20:40:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:51,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:40:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:40:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:51,251 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:51,338 INFO L93 Difference]: Finished difference Result 150 states and 208 transitions.
[2022-11-02 20:40:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:40:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:51,341 INFO L225 Difference]: With dead ends: 150
[2022-11-02 20:40:51,341 INFO L226 Difference]: Without dead ends: 117
[2022-11-02 20:40:51,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:40:51,346 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 148 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:51,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 244 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2022-11-02 20:40:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 57.
[2022-11-02 20:40:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 56 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions.
[2022-11-02 20:40:51,369 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 36
[2022-11-02 20:40:51,369 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:51,369 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions.
[2022-11-02 20:40:51,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions.
[2022-11-02 20:40:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:51,372 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:51,373 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:51,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:51,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1781790289, now seen corresponding path program 1 times
[2022-11-02 20:40:51,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292557376]
[2022-11-02 20:40:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:51,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:51,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:51,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2022-11-02 20:40:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:51,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-11-02 20:40:51,714 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:51,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:51,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:51,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292557376]
[2022-11-02 20:40:51,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292557376] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:51,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:51,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:40:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96512809]
[2022-11-02 20:40:51,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:51,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:40:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:40:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:51,996 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:52,111 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions.
[2022-11-02 20:40:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:40:52,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:52,113 INFO L225 Difference]: With dead ends: 150
[2022-11-02 20:40:52,113 INFO L226 Difference]: Without dead ends: 117
[2022-11-02 20:40:52,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:40:52,114 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 131 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:52,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 230 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:40:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2022-11-02 20:40:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 63.
[2022-11-02 20:40:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 62 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)
[2022-11-02 20:40:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions.
[2022-11-02 20:40:52,121 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 36
[2022-11-02 20:40:52,121 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:52,122 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions.
[2022-11-02 20:40:52,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions.
[2022-11-02 20:40:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:52,123 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:52,123 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:52,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:52,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash -738169645, now seen corresponding path program 1 times
[2022-11-02 20:40:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:52,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832709329]
[2022-11-02 20:40:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:52,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:52,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:52,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:52,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2022-11-02 20:40:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:52,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-11-02 20:40:52,531 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:52,957 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:40:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:53,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:53,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832709329]
[2022-11-02 20:40:53,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832709329] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:40:53,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:40:53,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-11-02 20:40:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603540931]
[2022-11-02 20:40:53,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:40:53,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 20:40:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 20:40:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:40:53,864 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 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)
[2022-11-02 20:40:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:54,240 INFO L93 Difference]: Finished difference Result 132 states and 178 transitions.
[2022-11-02 20:40:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-11-02 20:40:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 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) Word has length 36
[2022-11-02 20:40:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:54,242 INFO L225 Difference]: With dead ends: 132
[2022-11-02 20:40:54,242 INFO L226 Difference]: Without dead ends: 130
[2022-11-02 20:40:54,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506
[2022-11-02 20:40:54,243 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 357 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:54,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 441 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 73 Invalid, 0 Unknown, 104 Unchecked, 0.1s Time]
[2022-11-02 20:40:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2022-11-02 20:40:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 80.
[2022-11-02 20:40:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 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)
[2022-11-02 20:40:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions.
[2022-11-02 20:40:54,250 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 36
[2022-11-02 20:40:54,250 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:54,250 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions.
[2022-11-02 20:40:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 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)
[2022-11-02 20:40:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions.
[2022-11-02 20:40:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:54,252 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:54,252 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:54,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0
[2022-11-02 20:40:54,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:54,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1867853909, now seen corresponding path program 1 times
[2022-11-02 20:40:54,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:54,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248255862]
[2022-11-02 20:40:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:54,478 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:54,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2022-11-02 20:40:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:54,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:40:54,612 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:54,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:54,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:54,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248255862]
[2022-11-02 20:40:54,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248255862] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:54,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:54,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-11-02 20:40:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918268014]
[2022-11-02 20:40:54,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:54,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 20:40:54,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:54,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 20:40:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:40:54,764 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:54,830 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions.
[2022-11-02 20:40:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-11-02 20:40:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:54,832 INFO L225 Difference]: With dead ends: 126
[2022-11-02 20:40:54,832 INFO L226 Difference]: Without dead ends: 93
[2022-11-02 20:40:54,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:40:54,836 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 28 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:54,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 326 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time]
[2022-11-02 20:40:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-11-02 20:40:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82.
[2022-11-02 20:40:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 81 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions.
[2022-11-02 20:40:54,847 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 36
[2022-11-02 20:40:54,848 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:54,848 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions.
[2022-11-02 20:40:54,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions.
[2022-11-02 20:40:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:54,854 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:54,855 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:54,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0
[2022-11-02 20:40:55,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:55,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:55,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1869700951, now seen corresponding path program 1 times
[2022-11-02 20:40:55,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:55,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067069330]
[2022-11-02 20:40:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:55,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:55,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:55,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2022-11-02 20:40:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:55,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-11-02 20:40:55,226 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:55,800 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:40:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:57,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067069330]
[2022-11-02 20:40:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067069330] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:40:57,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:40:57,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2022-11-02 20:40:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042693195]
[2022-11-02 20:40:57,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:40:57,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:40:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:40:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:40:57,160 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 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)
[2022-11-02 20:40:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:58,559 INFO L93 Difference]: Finished difference Result 285 states and 389 transitions.
[2022-11-02 20:40:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-11-02 20:40:58,559 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 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) Word has length 36
[2022-11-02 20:40:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:58,562 INFO L225 Difference]: With dead ends: 285
[2022-11-02 20:40:58,562 INFO L226 Difference]: Without dead ends: 283
[2022-11-02 20:40:58,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=493, Invalid=2159, Unknown=0, NotChecked=0, Total=2652
[2022-11-02 20:40:58,564 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 434 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:58,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 2055 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 207 Invalid, 0 Unknown, 330 Unchecked, 0.3s Time]
[2022-11-02 20:40:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states.
[2022-11-02 20:40:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 120.
[2022-11-02 20:40:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3361344537815125) internal successors, (159), 119 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions.
[2022-11-02 20:40:58,576 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 36
[2022-11-02 20:40:58,576 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:58,576 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions.
[2022-11-02 20:40:58,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 26 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)
[2022-11-02 20:40:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions.
[2022-11-02 20:40:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:58,577 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:58,578 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:58,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0
[2022-11-02 20:40:58,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:58,790 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:58,791 INFO L85 PathProgramCache]: Analyzing trace with hash 64262617, now seen corresponding path program 1 times
[2022-11-02 20:40:58,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237905456]
[2022-11-02 20:40:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:58,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:58,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:58,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2022-11-02 20:40:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:58,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:40:58,908 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:58,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:58,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:58,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237905456]
[2022-11-02 20:40:58,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237905456] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:58,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:58,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:40:58,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477853710]
[2022-11-02 20:40:58,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:40:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:40:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:58,973 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:59,048 INFO L93 Difference]: Finished difference Result 226 states and 301 transitions.
[2022-11-02 20:40:59,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:40:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:59,050 INFO L225 Difference]: With dead ends: 226
[2022-11-02 20:40:59,050 INFO L226 Difference]: Without dead ends: 140
[2022-11-02 20:40:59,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:40:59,051 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 110 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:59,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 183 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:40:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2022-11-02 20:40:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120.
[2022-11-02 20:40:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.319327731092437) internal successors, (157), 119 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions.
[2022-11-02 20:40:59,065 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 36
[2022-11-02 20:40:59,066 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:59,066 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions.
[2022-11-02 20:40:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions.
[2022-11-02 20:40:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-02 20:40:59,070 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:59,071 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:59,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0
[2022-11-02 20:40:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:59,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:59,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2010249561, now seen corresponding path program 1 times
[2022-11-02 20:40:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:59,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765928506]
[2022-11-02 20:40:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:59,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:59,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:59,284 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:59,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2022-11-02 20:40:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:59,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:40:59,383 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:40:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:40:59,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:40:59,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:40:59,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765928506]
[2022-11-02 20:40:59,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765928506] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:40:59,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:40:59,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:40:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291188504]
[2022-11-02 20:40:59,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:40:59,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:40:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:40:59,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:40:59,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:40:59,444 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:40:59,509 INFO L93 Difference]: Finished difference Result 200 states and 268 transitions.
[2022-11-02 20:40:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:40:59,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36
[2022-11-02 20:40:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:40:59,511 INFO L225 Difference]: With dead ends: 200
[2022-11-02 20:40:59,511 INFO L226 Difference]: Without dead ends: 112
[2022-11-02 20:40:59,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:40:59,512 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 66 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:40:59,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 129 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:40:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2022-11-02 20:40:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100.
[2022-11-02 20:40:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 99 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 132 transitions.
[2022-11-02 20:40:59,518 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 132 transitions. Word has length 36
[2022-11-02 20:40:59,518 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:40:59,519 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 132 transitions.
[2022-11-02 20:40:59,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:40:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 132 transitions.
[2022-11-02 20:40:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:40:59,520 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:40:59,520 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:40:59,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0
[2022-11-02 20:40:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:40:59,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:40:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:40:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1425543995, now seen corresponding path program 1 times
[2022-11-02 20:40:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:40:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625790639]
[2022-11-02 20:40:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:40:59,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:40:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:40:59,729 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:40:59,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2022-11-02 20:40:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:40:59,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:40:59,907 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:00,083 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:00,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:00,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625790639]
[2022-11-02 20:41:00,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625790639] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:00,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:00,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258538025]
[2022-11-02 20:41:00,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:00,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:00,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:00,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:00,216 INFO L87 Difference]: Start difference. First operand 100 states and 132 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:00,415 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions.
[2022-11-02 20:41:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-11-02 20:41:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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
[2022-11-02 20:41:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:00,417 INFO L225 Difference]: With dead ends: 228
[2022-11-02 20:41:00,417 INFO L226 Difference]: Without dead ends: 172
[2022-11-02 20:41:00,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380
[2022-11-02 20:41:00,418 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 100 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:00,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 442 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time]
[2022-11-02 20:41:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states.
[2022-11-02 20:41:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142.
[2022-11-02 20:41:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3617021276595744) internal successors, (192), 141 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 192 transitions.
[2022-11-02 20:41:00,428 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 192 transitions. Word has length 67
[2022-11-02 20:41:00,431 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:00,431 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 192 transitions.
[2022-11-02 20:41:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 192 transitions.
[2022-11-02 20:41:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:00,432 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:00,432 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:00,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:00,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:00,647 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:00,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1483219907, now seen corresponding path program 1 times
[2022-11-02 20:41:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:00,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85133121]
[2022-11-02 20:41:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:00,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:00,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:00,649 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:00,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2022-11-02 20:41:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:00,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:41:00,817 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:01,044 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:01,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:01,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85133121]
[2022-11-02 20:41:01,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85133121] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:01,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:01,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592756582]
[2022-11-02 20:41:01,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:01,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:01,262 INFO L87 Difference]: Start difference. First operand 142 states and 192 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:01,596 INFO L93 Difference]: Finished difference Result 469 states and 646 transitions.
[2022-11-02 20:41:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-11-02 20:41:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2022-11-02 20:41:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:01,598 INFO L225 Difference]: With dead ends: 469
[2022-11-02 20:41:01,599 INFO L226 Difference]: Without dead ends: 376
[2022-11-02 20:41:01,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600
[2022-11-02 20:41:01,600 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 339 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:01,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 441 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time]
[2022-11-02 20:41:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states.
[2022-11-02 20:41:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 166.
[2022-11-02 20:41:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.3393939393939394) internal successors, (221), 165 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 221 transitions.
[2022-11-02 20:41:01,631 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 221 transitions. Word has length 67
[2022-11-02 20:41:01,631 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:01,631 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 221 transitions.
[2022-11-02 20:41:01,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 221 transitions.
[2022-11-02 20:41:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:01,632 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:01,632 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:01,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:01,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:01,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -888519355, now seen corresponding path program 1 times
[2022-11-02 20:41:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:01,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120309544]
[2022-11-02 20:41:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:01,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:01,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:01,847 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:01,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process
[2022-11-02 20:41:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:01,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-11-02 20:41:01,987 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:02,416 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:03,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:03,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120309544]
[2022-11-02 20:41:03,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120309544] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:03,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:03,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973141392]
[2022-11-02 20:41:03,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:03,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:03,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:03,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:03,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:03,115 INFO L87 Difference]: Start difference. First operand 166 states and 221 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:03,633 INFO L93 Difference]: Finished difference Result 666 states and 927 transitions.
[2022-11-02 20:41:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-11-02 20:41:03,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2022-11-02 20:41:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:03,635 INFO L225 Difference]: With dead ends: 666
[2022-11-02 20:41:03,636 INFO L226 Difference]: Without dead ends: 552
[2022-11-02 20:41:03,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:03,637 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 337 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:03,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 923 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 162 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time]
[2022-11-02 20:41:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states.
[2022-11-02 20:41:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 186.
[2022-11-02 20:41:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.335135135135135) internal successors, (247), 185 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 247 transitions.
[2022-11-02 20:41:03,655 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 247 transitions. Word has length 67
[2022-11-02 20:41:03,655 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:03,655 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 247 transitions.
[2022-11-02 20:41:03,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:03,655 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 247 transitions.
[2022-11-02 20:41:03,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:03,656 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:03,656 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:03,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:03,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:03,874 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash -465817529, now seen corresponding path program 1 times
[2022-11-02 20:41:03,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:03,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414202163]
[2022-11-02 20:41:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:03,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:03,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:03,877 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:03,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process
[2022-11-02 20:41:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:41:04,054 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:04,311 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:04,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:04,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414202163]
[2022-11-02 20:41:04,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414202163] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:04,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:04,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611474928]
[2022-11-02 20:41:04,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:04,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:04,466 INFO L87 Difference]: Start difference. First operand 186 states and 247 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 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)
[2022-11-02 20:41:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:04,564 INFO L93 Difference]: Finished difference Result 330 states and 446 transitions.
[2022-11-02 20:41:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-11-02 20:41:04,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 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 67
[2022-11-02 20:41:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:04,566 INFO L225 Difference]: With dead ends: 330
[2022-11-02 20:41:04,566 INFO L226 Difference]: Without dead ends: 196
[2022-11-02 20:41:04,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272
[2022-11-02 20:41:04,567 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:04,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 265 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time]
[2022-11-02 20:41:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states.
[2022-11-02 20:41:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194.
[2022-11-02 20:41:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.3264248704663213) internal successors, (256), 193 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 256 transitions.
[2022-11-02 20:41:04,584 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 256 transitions. Word has length 67
[2022-11-02 20:41:04,584 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:04,584 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 256 transitions.
[2022-11-02 20:41:04,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 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)
[2022-11-02 20:41:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 256 transitions.
[2022-11-02 20:41:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:04,589 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:04,589 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:04,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:04,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 814046149, now seen corresponding path program 1 times
[2022-11-02 20:41:04,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:04,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192354886]
[2022-11-02 20:41:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:04,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:04,798 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:04,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process
[2022-11-02 20:41:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:41:04,955 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:05,186 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:05,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192354886]
[2022-11-02 20:41:05,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192354886] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:05,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:05,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082074534]
[2022-11-02 20:41:05,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:05,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:05,430 INFO L87 Difference]: Start difference. First operand 194 states and 256 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:05,884 INFO L93 Difference]: Finished difference Result 1166 states and 1584 transitions.
[2022-11-02 20:41:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-11-02 20:41:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 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
[2022-11-02 20:41:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:05,889 INFO L225 Difference]: With dead ends: 1166
[2022-11-02 20:41:05,889 INFO L226 Difference]: Without dead ends: 1024
[2022-11-02 20:41:05,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702
[2022-11-02 20:41:05,890 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 586 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:05,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 943 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time]
[2022-11-02 20:41:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states.
[2022-11-02 20:41:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 467.
[2022-11-02 20:41:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.3476394849785407) internal successors, (628), 466 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 628 transitions.
[2022-11-02 20:41:05,925 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 628 transitions. Word has length 67
[2022-11-02 20:41:05,926 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:05,926 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 628 transitions.
[2022-11-02 20:41:05,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 628 transitions.
[2022-11-02 20:41:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:05,927 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:05,927 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:05,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:06,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:06,146 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash 227240135, now seen corresponding path program 1 times
[2022-11-02 20:41:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:06,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884493688]
[2022-11-02 20:41:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:06,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:06,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:06,148 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:06,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process
[2022-11-02 20:41:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:06,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-11-02 20:41:06,292 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:06,769 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:07,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:07,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884493688]
[2022-11-02 20:41:07,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884493688] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:07,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:07,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023516610]
[2022-11-02 20:41:07,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:07,584 INFO L87 Difference]: Start difference. First operand 467 states and 628 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:08,001 INFO L93 Difference]: Finished difference Result 1658 states and 2246 transitions.
[2022-11-02 20:41:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-11-02 20:41:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 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
[2022-11-02 20:41:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:08,006 INFO L225 Difference]: With dead ends: 1658
[2022-11-02 20:41:08,006 INFO L226 Difference]: Without dead ends: 1243
[2022-11-02 20:41:08,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:08,008 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 341 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:08,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 501 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time]
[2022-11-02 20:41:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states.
[2022-11-02 20:41:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 537.
[2022-11-02 20:41:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.3507462686567164) internal successors, (724), 536 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 724 transitions.
[2022-11-02 20:41:08,047 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 724 transitions. Word has length 67
[2022-11-02 20:41:08,047 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:08,047 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 724 transitions.
[2022-11-02 20:41:08,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 724 transitions.
[2022-11-02 20:41:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:08,049 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:08,049 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1]
[2022-11-02 20:41:08,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:08,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:08,263 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2002247497, now seen corresponding path program 2 times
[2022-11-02 20:41:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:08,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041231313]
[2022-11-02 20:41:08,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:41:08,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:08,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:08,265 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:08,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process
[2022-11-02 20:41:08,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:41:08,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:41:08,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-11-02 20:41:08,421 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:41:08,916 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:41:09,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:09,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041231313]
[2022-11-02 20:41:09,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041231313] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:09,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:09,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-11-02 20:41:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651161356]
[2022-11-02 20:41:09,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:09,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 20:41:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:09,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 20:41:09,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:41:09,755 INFO L87 Difference]: Start difference. First operand 537 states and 724 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:10,106 INFO L93 Difference]: Finished difference Result 948 states and 1296 transitions.
[2022-11-02 20:41:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-11-02 20:41:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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
[2022-11-02 20:41:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:10,110 INFO L225 Difference]: With dead ends: 948
[2022-11-02 20:41:10,110 INFO L226 Difference]: Without dead ends: 946
[2022-11-02 20:41:10,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:10,112 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 204 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:10,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 406 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time]
[2022-11-02 20:41:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states.
[2022-11-02 20:41:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 517.
[2022-11-02 20:41:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 516 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 695 transitions.
[2022-11-02 20:41:10,148 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 695 transitions. Word has length 67
[2022-11-02 20:41:10,149 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:10,149 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 695 transitions.
[2022-11-02 20:41:10,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 695 transitions.
[2022-11-02 20:41:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:10,150 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:10,150 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:10,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:10,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:10,363 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1492134579, now seen corresponding path program 1 times
[2022-11-02 20:41:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:10,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093954923]
[2022-11-02 20:41:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:10,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:10,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:10,366 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process
[2022-11-02 20:41:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:10,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:41:10,541 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:10,738 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:10,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093954923]
[2022-11-02 20:41:10,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093954923] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:10,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:10,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-11-02 20:41:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911473396]
[2022-11-02 20:41:10,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 20:41:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 20:41:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:41:10,898 INFO L87 Difference]: Start difference. First operand 517 states and 695 transitions. Second operand has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:11,355 INFO L93 Difference]: Finished difference Result 1430 states and 1909 transitions.
[2022-11-02 20:41:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-11-02 20:41:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 14 states have internal predecessors, (111), 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
[2022-11-02 20:41:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:11,359 INFO L225 Difference]: With dead ends: 1430
[2022-11-02 20:41:11,359 INFO L226 Difference]: Without dead ends: 945
[2022-11-02 20:41:11,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756
[2022-11-02 20:41:11,361 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 445 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:11,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 516 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:41:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states.
[2022-11-02 20:41:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 517.
[2022-11-02 20:41:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.323643410852713) internal successors, (683), 516 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 683 transitions.
[2022-11-02 20:41:11,417 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 683 transitions. Word has length 67
[2022-11-02 20:41:11,417 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:11,417 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 683 transitions.
[2022-11-02 20:41:11,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 683 transitions.
[2022-11-02 20:41:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:11,419 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:11,419 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:11,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:11,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:11,632 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:11,632 INFO L85 PathProgramCache]: Analyzing trace with hash 453852365, now seen corresponding path program 1 times
[2022-11-02 20:41:11,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:11,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681916539]
[2022-11-02 20:41:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:11,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:11,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:11,634 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:11,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process
[2022-11-02 20:41:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:11,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:41:11,781 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:11,940 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:12,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:12,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681916539]
[2022-11-02 20:41:12,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681916539] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:12,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:12,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:41:12,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192686865]
[2022-11-02 20:41:12,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:12,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:41:12,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:41:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:12,061 INFO L87 Difference]: Start difference. First operand 517 states and 683 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:12,178 INFO L93 Difference]: Finished difference Result 997 states and 1327 transitions.
[2022-11-02 20:41:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-11-02 20:41:12,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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
[2022-11-02 20:41:12,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:12,181 INFO L225 Difference]: With dead ends: 997
[2022-11-02 20:41:12,181 INFO L226 Difference]: Without dead ends: 512
[2022-11-02 20:41:12,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272
[2022-11-02 20:41:12,182 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:12,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 335 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time]
[2022-11-02 20:41:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states.
[2022-11-02 20:41:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 483.
[2022-11-02 20:41:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3195020746887967) internal successors, (636), 482 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 636 transitions.
[2022-11-02 20:41:12,235 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 636 transitions. Word has length 67
[2022-11-02 20:41:12,235 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:12,235 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 636 transitions.
[2022-11-02 20:41:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 636 transitions.
[2022-11-02 20:41:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:12,237 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:12,237 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:12,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0
[2022-11-02 20:41:12,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:12,450 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash 679773057, now seen corresponding path program 1 times
[2022-11-02 20:41:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:12,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030460996]
[2022-11-02 20:41:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:12,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:12,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:12,453 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:12,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process
[2022-11-02 20:41:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:12,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:41:12,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-11-02 20:41:12,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:41:12,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030460996]
[2022-11-02 20:41:12,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030460996] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:41:12,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:41:12,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-11-02 20:41:12,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140037433]
[2022-11-02 20:41:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:41:12,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 20:41:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 20:41:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:41:12,741 INFO L87 Difference]: Start difference. First operand 483 states and 636 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:12,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:12,779 INFO L93 Difference]: Finished difference Result 864 states and 1144 transitions.
[2022-11-02 20:41:12,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-11-02 20:41:12,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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
[2022-11-02 20:41:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:12,781 INFO L225 Difference]: With dead ends: 864
[2022-11-02 20:41:12,782 INFO L226 Difference]: Without dead ends: 413
[2022-11-02 20:41:12,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:41:12,783 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:12,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 217 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time]
[2022-11-02 20:41:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states.
[2022-11-02 20:41:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413.
[2022-11-02 20:41:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.3203883495145632) internal successors, (544), 412 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 544 transitions.
[2022-11-02 20:41:12,812 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 544 transitions. Word has length 67
[2022-11-02 20:41:12,812 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:12,812 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 544 transitions.
[2022-11-02 20:41:12,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 544 transitions.
[2022-11-02 20:41:12,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:12,814 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:12,814 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:12,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:13,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:13,027 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash 305032515, now seen corresponding path program 1 times
[2022-11-02 20:41:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:13,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336094408]
[2022-11-02 20:41:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:13,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:13,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:13,029 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:13,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process
[2022-11-02 20:41:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:13,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-11-02 20:41:13,185 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:13,480 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:13,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:13,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336094408]
[2022-11-02 20:41:13,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336094408] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:13,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:13,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25
[2022-11-02 20:41:13,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52068240]
[2022-11-02 20:41:13,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:13,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:41:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:41:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600
[2022-11-02 20:41:13,823 INFO L87 Difference]: Start difference. First operand 413 states and 544 transitions. Second operand has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:16,361 INFO L93 Difference]: Finished difference Result 3024 states and 4050 transitions.
[2022-11-02 20:41:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-11-02 20:41:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2022-11-02 20:41:16,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:16,370 INFO L225 Difference]: With dead ends: 3024
[2022-11-02 20:41:16,370 INFO L226 Difference]: Without dead ends: 2760
[2022-11-02 20:41:16,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1311, Invalid=5009, Unknown=0, NotChecked=0, Total=6320
[2022-11-02 20:41:16,373 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1643 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:16,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 1804 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:41:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states.
[2022-11-02 20:41:16,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 504.
[2022-11-02 20:41:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.320079522862823) internal successors, (664), 503 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 664 transitions.
[2022-11-02 20:41:16,441 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 664 transitions. Word has length 67
[2022-11-02 20:41:16,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:16,441 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 664 transitions.
[2022-11-02 20:41:16,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.08) internal successors, (102), 25 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 664 transitions.
[2022-11-02 20:41:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:16,443 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:16,443 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:16,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:16,656 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1006632389, now seen corresponding path program 1 times
[2022-11-02 20:41:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:16,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136287400]
[2022-11-02 20:41:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:16,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:16,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:16,658 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:16,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process
[2022-11-02 20:41:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-11-02 20:41:16,818 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:17,079 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:17,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:17,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136287400]
[2022-11-02 20:41:17,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136287400] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:17,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:17,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24
[2022-11-02 20:41:17,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463816710]
[2022-11-02 20:41:17,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:17,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-11-02 20:41:17,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:17,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-11-02 20:41:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:17,584 INFO L87 Difference]: Start difference. First operand 504 states and 664 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:18,188 INFO L93 Difference]: Finished difference Result 1305 states and 1742 transitions.
[2022-11-02 20:41:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-11-02 20:41:18,188 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2022-11-02 20:41:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:18,191 INFO L225 Difference]: With dead ends: 1305
[2022-11-02 20:41:18,192 INFO L226 Difference]: Without dead ends: 950
[2022-11-02 20:41:18,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=1401, Unknown=0, NotChecked=0, Total=1640
[2022-11-02 20:41:18,193 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 312 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:18,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1217 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 297 Unchecked, 0.1s Time]
[2022-11-02 20:41:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states.
[2022-11-02 20:41:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 519.
[2022-11-02 20:41:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.3146718146718146) internal successors, (681), 518 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 681 transitions.
[2022-11-02 20:41:18,241 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 681 transitions. Word has length 67
[2022-11-02 20:41:18,241 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:18,241 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 681 transitions.
[2022-11-02 20:41:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 681 transitions.
[2022-11-02 20:41:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:18,242 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:18,242 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:18,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:18,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:18,459 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:18,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1365106873, now seen corresponding path program 1 times
[2022-11-02 20:41:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:18,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477512212]
[2022-11-02 20:41:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:18,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:18,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:18,461 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:18,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process
[2022-11-02 20:41:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:18,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-11-02 20:41:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:18,946 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:19,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477512212]
[2022-11-02 20:41:19,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477512212] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:19,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:19,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25
[2022-11-02 20:41:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677267311]
[2022-11-02 20:41:19,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:19,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:41:19,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:41:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600
[2022-11-02 20:41:19,295 INFO L87 Difference]: Start difference. First operand 519 states and 681 transitions. Second operand has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:20,653 INFO L93 Difference]: Finished difference Result 1696 states and 2267 transitions.
[2022-11-02 20:41:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-11-02 20:41:20,654 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 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
[2022-11-02 20:41:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:20,658 INFO L225 Difference]: With dead ends: 1696
[2022-11-02 20:41:20,658 INFO L226 Difference]: Without dead ends: 1341
[2022-11-02 20:41:20,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=517, Invalid=2345, Unknown=0, NotChecked=0, Total=2862
[2022-11-02 20:41:20,660 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1056 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:20,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1403 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-11-02 20:41:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states.
[2022-11-02 20:41:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 549.
[2022-11-02 20:41:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.3102189781021898) internal successors, (718), 548 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 718 transitions.
[2022-11-02 20:41:20,713 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 718 transitions. Word has length 67
[2022-11-02 20:41:20,714 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:20,714 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 718 transitions.
[2022-11-02 20:41:20,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 718 transitions.
[2022-11-02 20:41:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:20,715 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:20,715 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:20,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:20,916 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1224558263, now seen corresponding path program 1 times
[2022-11-02 20:41:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710742969]
[2022-11-02 20:41:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:20,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:20,918 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:20,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process
[2022-11-02 20:41:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:21,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-11-02 20:41:21,070 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:21,421 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:21,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710742969]
[2022-11-02 20:41:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710742969] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:21,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:21,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24
[2022-11-02 20:41:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410204036]
[2022-11-02 20:41:21,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-11-02 20:41:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-11-02 20:41:21,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:21,795 INFO L87 Difference]: Start difference. First operand 549 states and 718 transitions. Second operand has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:24,017 INFO L93 Difference]: Finished difference Result 3836 states and 5012 transitions.
[2022-11-02 20:41:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-11-02 20:41:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 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
[2022-11-02 20:41:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:24,025 INFO L225 Difference]: With dead ends: 3836
[2022-11-02 20:41:24,026 INFO L226 Difference]: Without dead ends: 3375
[2022-11-02 20:41:24,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1062, Invalid=4050, Unknown=0, NotChecked=0, Total=5112
[2022-11-02 20:41:24,029 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1166 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:24,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1841 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-11-02 20:41:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states.
[2022-11-02 20:41:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 704.
[2022-11-02 20:41:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.3172119487908962) internal successors, (926), 703 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 926 transitions.
[2022-11-02 20:41:24,110 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 926 transitions. Word has length 67
[2022-11-02 20:41:24,110 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:24,111 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 926 transitions.
[2022-11-02 20:41:24,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 926 transitions.
[2022-11-02 20:41:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:24,112 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:24,112 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:24,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:24,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:24,325 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1264970699, now seen corresponding path program 1 times
[2022-11-02 20:41:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:24,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554523712]
[2022-11-02 20:41:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:24,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:24,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:24,327 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:24,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process
[2022-11-02 20:41:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:24,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-11-02 20:41:24,493 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:24,849 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:25,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:25,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554523712]
[2022-11-02 20:41:25,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554523712] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:25,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:25,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25
[2022-11-02 20:41:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108558358]
[2022-11-02 20:41:25,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:25,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:41:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:41:25,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600
[2022-11-02 20:41:25,202 INFO L87 Difference]: Start difference. First operand 704 states and 926 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:27,471 INFO L93 Difference]: Finished difference Result 3857 states and 5115 transitions.
[2022-11-02 20:41:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-11-02 20:41:27,471 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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
[2022-11-02 20:41:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:27,480 INFO L225 Difference]: With dead ends: 3857
[2022-11-02 20:41:27,480 INFO L226 Difference]: Without dead ends: 3340
[2022-11-02 20:41:27,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=959, Invalid=4153, Unknown=0, NotChecked=0, Total=5112
[2022-11-02 20:41:27,483 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1053 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:27,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 2170 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:41:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states.
[2022-11-02 20:41:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 758.
[2022-11-02 20:41:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.3064729194187583) internal successors, (989), 757 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 989 transitions.
[2022-11-02 20:41:27,564 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 989 transitions. Word has length 67
[2022-11-02 20:41:27,564 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:27,564 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 989 transitions.
[2022-11-02 20:41:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 989 transitions.
[2022-11-02 20:41:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:27,566 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:27,566 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:27,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:27,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:27,779 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash -323377203, now seen corresponding path program 1 times
[2022-11-02 20:41:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:27,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377486693]
[2022-11-02 20:41:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:27,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:27,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:27,781 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:27,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process
[2022-11-02 20:41:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:27,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-11-02 20:41:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:28,237 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:28,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:28,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377486693]
[2022-11-02 20:41:28,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377486693] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:28,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:28,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24
[2022-11-02 20:41:28,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072944495]
[2022-11-02 20:41:28,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:28,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-11-02 20:41:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-11-02 20:41:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:28,755 INFO L87 Difference]: Start difference. First operand 758 states and 989 transitions. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:30,425 INFO L93 Difference]: Finished difference Result 4761 states and 6104 transitions.
[2022-11-02 20:41:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-11-02 20:41:30,426 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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
[2022-11-02 20:41:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:30,433 INFO L225 Difference]: With dead ends: 4761
[2022-11-02 20:41:30,433 INFO L226 Difference]: Without dead ends: 4091
[2022-11-02 20:41:30,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=883, Invalid=3539, Unknown=0, NotChecked=0, Total=4422
[2022-11-02 20:41:30,435 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 997 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:30,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 2146 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 239 Invalid, 0 Unknown, 371 Unchecked, 0.2s Time]
[2022-11-02 20:41:30,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states.
[2022-11-02 20:41:30,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 820.
[2022-11-02 20:41:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.3076923076923077) internal successors, (1071), 819 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1071 transitions.
[2022-11-02 20:41:30,525 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1071 transitions. Word has length 67
[2022-11-02 20:41:30,525 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:30,525 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1071 transitions.
[2022-11-02 20:41:30,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1071 transitions.
[2022-11-02 20:41:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:30,527 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:30,527 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:30,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:30,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:30,740 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -910183217, now seen corresponding path program 1 times
[2022-11-02 20:41:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809856505]
[2022-11-02 20:41:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:30,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:30,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:30,742 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:30,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process
[2022-11-02 20:41:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:30,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-11-02 20:41:30,915 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:31,296 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:31,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809856505]
[2022-11-02 20:41:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809856505] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:31,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:31,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25
[2022-11-02 20:41:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554881537]
[2022-11-02 20:41:31,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:41:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:41:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600
[2022-11-02 20:41:31,654 INFO L87 Difference]: Start difference. First operand 820 states and 1071 transitions. Second operand has 25 states, 25 states have (on average 4.88) internal successors, (122), 25 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:34,073 INFO L93 Difference]: Finished difference Result 3597 states and 4728 transitions.
[2022-11-02 20:41:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-11-02 20:41:34,073 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.88) internal successors, (122), 25 states have internal predecessors, (122), 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
[2022-11-02 20:41:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:34,080 INFO L225 Difference]: With dead ends: 3597
[2022-11-02 20:41:34,080 INFO L226 Difference]: Without dead ends: 2978
[2022-11-02 20:41:34,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=977, Invalid=4279, Unknown=0, NotChecked=0, Total=5256
[2022-11-02 20:41:34,083 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1147 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:34,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1824 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:41:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states.
[2022-11-02 20:41:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 896.
[2022-11-02 20:41:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.3039106145251396) internal successors, (1167), 895 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1167 transitions.
[2022-11-02 20:41:34,183 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1167 transitions. Word has length 67
[2022-11-02 20:41:34,183 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:34,183 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1167 transitions.
[2022-11-02 20:41:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.88) internal successors, (122), 25 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1167 transitions.
[2022-11-02 20:41:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:34,185 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:34,185 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:34,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:34,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:34,398 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash -209118639, now seen corresponding path program 1 times
[2022-11-02 20:41:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:34,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413343939]
[2022-11-02 20:41:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:34,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:34,399 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process
[2022-11-02 20:41:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:34,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-11-02 20:41:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:34,914 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:35,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413343939]
[2022-11-02 20:41:35,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413343939] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:35,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:35,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24
[2022-11-02 20:41:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222430066]
[2022-11-02 20:41:35,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-11-02 20:41:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-11-02 20:41:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:41:35,272 INFO L87 Difference]: Start difference. First operand 896 states and 1167 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:37,220 INFO L93 Difference]: Finished difference Result 4564 states and 5894 transitions.
[2022-11-02 20:41:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-11-02 20:41:37,220 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 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
[2022-11-02 20:41:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:37,227 INFO L225 Difference]: With dead ends: 4564
[2022-11-02 20:41:37,228 INFO L226 Difference]: Without dead ends: 3756
[2022-11-02 20:41:37,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660
[2022-11-02 20:41:37,231 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 830 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:37,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 2692 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-11-02 20:41:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states.
[2022-11-02 20:41:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 924.
[2022-11-02 20:41:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.3001083423618636) internal successors, (1200), 923 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1200 transitions.
[2022-11-02 20:41:37,325 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1200 transitions. Word has length 67
[2022-11-02 20:41:37,325 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:37,325 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1200 transitions.
[2022-11-02 20:41:37,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1200 transitions.
[2022-11-02 20:41:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:37,327 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:37,327 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:37,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0
[2022-11-02 20:41:37,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:37,541 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:37,541 INFO L85 PathProgramCache]: Analyzing trace with hash 470939731, now seen corresponding path program 1 times
[2022-11-02 20:41:37,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:37,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102296874]
[2022-11-02 20:41:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:37,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:37,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:37,542 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:37,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process
[2022-11-02 20:41:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:37,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:41:37,681 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-02 20:41:37,836 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:41:37,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102296874]
[2022-11-02 20:41:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102296874] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:41:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:41:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8
[2022-11-02 20:41:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77615584]
[2022-11-02 20:41:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:41:37,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:41:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:41:37,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:41:37,874 INFO L87 Difference]: Start difference. First operand 924 states and 1200 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:37,971 INFO L93 Difference]: Finished difference Result 1553 states and 2041 transitions.
[2022-11-02 20:41:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:41:37,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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
[2022-11-02 20:41:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:37,974 INFO L225 Difference]: With dead ends: 1553
[2022-11-02 20:41:37,974 INFO L226 Difference]: Without dead ends: 834
[2022-11-02 20:41:37,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:41:37,976 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 84 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:37,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 239 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:41:37,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states.
[2022-11-02 20:41:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 784.
[2022-11-02 20:41:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3026819923371646) internal successors, (1020), 783 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1020 transitions.
[2022-11-02 20:41:38,026 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1020 transitions. Word has length 67
[2022-11-02 20:41:38,027 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:38,027 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1020 transitions.
[2022-11-02 20:41:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1020 transitions.
[2022-11-02 20:41:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:38,028 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:38,028 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:38,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:38,241 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 472786773, now seen corresponding path program 1 times
[2022-11-02 20:41:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849714806]
[2022-11-02 20:41:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:38,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:38,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:38,243 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:38,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process
[2022-11-02 20:41:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:38,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 47 conjunts are in the unsatisfiable core
[2022-11-02 20:41:38,380 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:39,582 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:43,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849714806]
[2022-11-02 20:41:43,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849714806] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:43,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:43,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48
[2022-11-02 20:41:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069657816]
[2022-11-02 20:41:43,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:43,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-11-02 20:41:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-11-02 20:41:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256
[2022-11-02 20:41:43,619 INFO L87 Difference]: Start difference. First operand 784 states and 1020 transitions. Second operand has 48 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:49,271 INFO L93 Difference]: Finished difference Result 1320 states and 1710 transitions.
[2022-11-02 20:41:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2022-11-02 20:41:49,272 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 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
[2022-11-02 20:41:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:49,274 INFO L225 Difference]: With dead ends: 1320
[2022-11-02 20:41:49,274 INFO L226 Difference]: Without dead ends: 1318
[2022-11-02 20:41:49,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=693, Invalid=7863, Unknown=0, NotChecked=0, Total=8556
[2022-11-02 20:41:49,278 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 710 mSDsluCounter, 5335 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 5544 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1457 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:49,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 5544 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 579 Invalid, 0 Unknown, 1457 Unchecked, 0.7s Time]
[2022-11-02 20:41:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states.
[2022-11-02 20:41:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 882.
[2022-11-02 20:41:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.3030646992054484) internal successors, (1148), 881 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1148 transitions.
[2022-11-02 20:41:49,354 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1148 transitions. Word has length 67
[2022-11-02 20:41:49,355 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:49,355 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1148 transitions.
[2022-11-02 20:41:49,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1148 transitions.
[2022-11-02 20:41:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:49,356 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:49,357 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:49,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0
[2022-11-02 20:41:49,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:49,571 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:49,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:49,571 INFO L85 PathProgramCache]: Analyzing trace with hash 895488599, now seen corresponding path program 1 times
[2022-11-02 20:41:49,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:49,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754429379]
[2022-11-02 20:41:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:49,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:49,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:49,573 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:49,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process
[2022-11-02 20:41:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-11-02 20:41:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:50,177 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:51,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:51,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754429379]
[2022-11-02 20:41:51,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754429379] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:51,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:51,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2022-11-02 20:41:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410689395]
[2022-11-02 20:41:51,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:51,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:41:51,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:41:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:41:51,038 INFO L87 Difference]: Start difference. First operand 882 states and 1148 transitions. Second operand has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:52,562 INFO L93 Difference]: Finished difference Result 4137 states and 5382 transitions.
[2022-11-02 20:41:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-11-02 20:41:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 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
[2022-11-02 20:41:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:52,566 INFO L225 Difference]: With dead ends: 4137
[2022-11-02 20:41:52,566 INFO L226 Difference]: Without dead ends: 3435
[2022-11-02 20:41:52,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=421, Invalid=2129, Unknown=0, NotChecked=0, Total=2550
[2022-11-02 20:41:52,568 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 512 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 563 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:52,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2871 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 318 Invalid, 0 Unknown, 563 Unchecked, 0.4s Time]
[2022-11-02 20:41:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states.
[2022-11-02 20:41:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 1730.
[2022-11-02 20:41:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1729 states have (on average 1.3175245806824754) internal successors, (2278), 1729 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2278 transitions.
[2022-11-02 20:41:52,700 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2278 transitions. Word has length 67
[2022-11-02 20:41:52,700 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:52,700 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2278 transitions.
[2022-11-02 20:41:52,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.346153846153846) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2278 transitions.
[2022-11-02 20:41:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:52,701 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:52,702 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:52,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:52,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:52,915 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:52,915 INFO L85 PathProgramCache]: Analyzing trace with hash -913416621, now seen corresponding path program 1 times
[2022-11-02 20:41:52,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:52,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560561919]
[2022-11-02 20:41:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:52,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:52,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:52,917 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:52,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process
[2022-11-02 20:41:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:53,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-11-02 20:41:53,056 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:53,348 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:41:53,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:53,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560561919]
[2022-11-02 20:41:53,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560561919] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:41:53,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:41:53,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25
[2022-11-02 20:41:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41455969]
[2022-11-02 20:41:53,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:41:53,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-11-02 20:41:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-11-02 20:41:53,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600
[2022-11-02 20:41:53,686 INFO L87 Difference]: Start difference. First operand 1730 states and 2278 transitions. Second operand has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:56,220 INFO L93 Difference]: Finished difference Result 7578 states and 10037 transitions.
[2022-11-02 20:41:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-11-02 20:41:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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
[2022-11-02 20:41:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:56,228 INFO L225 Difference]: With dead ends: 7578
[2022-11-02 20:41:56,229 INFO L226 Difference]: Without dead ends: 6340
[2022-11-02 20:41:56,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=901, Invalid=3791, Unknown=0, NotChecked=0, Total=4692
[2022-11-02 20:41:56,232 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1261 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:56,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 1594 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 20:41:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states.
[2022-11-02 20:41:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 1728.
[2022-11-02 20:41:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.3121019108280254) internal successors, (2266), 1727 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2266 transitions.
[2022-11-02 20:41:56,453 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2266 transitions. Word has length 67
[2022-11-02 20:41:56,454 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:56,454 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2266 transitions.
[2022-11-02 20:41:56,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2266 transitions.
[2022-11-02 20:41:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:56,455 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:56,456 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:56,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:56,672 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1110062581, now seen corresponding path program 1 times
[2022-11-02 20:41:56,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:56,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957273400]
[2022-11-02 20:41:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:56,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:56,674 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:56,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process
[2022-11-02 20:41:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:56,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:41:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-02 20:41:56,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:41:56,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:56,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957273400]
[2022-11-02 20:41:56,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957273400] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:41:56,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:41:56,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:41:56,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17888159]
[2022-11-02 20:41:56,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:41:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:41:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:41:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:41:56,943 INFO L87 Difference]: Start difference. First operand 1728 states and 2266 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:57,101 INFO L93 Difference]: Finished difference Result 3388 states and 4445 transitions.
[2022-11-02 20:41:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:41:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2022-11-02 20:41:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:57,105 INFO L225 Difference]: With dead ends: 3388
[2022-11-02 20:41:57,105 INFO L226 Difference]: Without dead ends: 1776
[2022-11-02 20:41:57,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:41:57,107 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 96 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:57,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 196 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:41:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states.
[2022-11-02 20:41:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1728.
[2022-11-02 20:41:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.3103647944412276) internal successors, (2263), 1727 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2263 transitions.
[2022-11-02 20:41:57,292 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2263 transitions. Word has length 67
[2022-11-02 20:41:57,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:57,292 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2263 transitions.
[2022-11-02 20:41:57,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2263 transitions.
[2022-11-02 20:41:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-02 20:41:57,294 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:57,294 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:57,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0
[2022-11-02 20:41:57,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:57,499 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash 509891211, now seen corresponding path program 1 times
[2022-11-02 20:41:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517193439]
[2022-11-02 20:41:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:57,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:57,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:57,502 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:57,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process
[2022-11-02 20:41:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:57,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:41:57,654 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-02 20:41:57,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:41:57,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:57,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517193439]
[2022-11-02 20:41:57,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517193439] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:41:57,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:41:57,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:41:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299784891]
[2022-11-02 20:41:57,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:41:57,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:41:57,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:41:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:41:57,747 INFO L87 Difference]: Start difference. First operand 1728 states and 2263 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:57,875 INFO L93 Difference]: Finished difference Result 2919 states and 3820 transitions.
[2022-11-02 20:41:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 20:41:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67
[2022-11-02 20:41:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:57,880 INFO L225 Difference]: With dead ends: 2919
[2022-11-02 20:41:57,880 INFO L226 Difference]: Without dead ends: 1303
[2022-11-02 20:41:57,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:41:57,882 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 51 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:57,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 140 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:41:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states.
[2022-11-02 20:41:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1294.
[2022-11-02 20:41:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 1.3016241299303943) internal successors, (1683), 1293 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1683 transitions.
[2022-11-02 20:41:57,988 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1683 transitions. Word has length 67
[2022-11-02 20:41:57,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:57,989 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 1683 transitions.
[2022-11-02 20:41:57,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1683 transitions.
[2022-11-02 20:41:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:41:57,990 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:57,991 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:58,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:58,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:58,203 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1224044845, now seen corresponding path program 1 times
[2022-11-02 20:41:58,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:58,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225597974]
[2022-11-02 20:41:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:58,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:58,205 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:58,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process
[2022-11-02 20:41:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:58,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:41:58,390 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-11-02 20:41:58,613 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:41:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-11-02 20:41:58,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:41:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225597974]
[2022-11-02 20:41:58,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225597974] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:41:58,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:41:58,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2022-11-02 20:41:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334962677]
[2022-11-02 20:41:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:41:58,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:41:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:41:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:41:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:41:58,693 INFO L87 Difference]: Start difference. First operand 1294 states and 1683 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:58,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:41:58,841 INFO L93 Difference]: Finished difference Result 2216 states and 2901 transitions.
[2022-11-02 20:41:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:41:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98
[2022-11-02 20:41:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:41:58,843 INFO L225 Difference]: With dead ends: 2216
[2022-11-02 20:41:58,853 INFO L226 Difference]: Without dead ends: 1069
[2022-11-02 20:41:58,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:41:58,855 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 106 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:41:58,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 231 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:41:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states.
[2022-11-02 20:41:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 995.
[2022-11-02 20:41:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.2977867203219315) internal successors, (1290), 994 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1290 transitions.
[2022-11-02 20:41:58,950 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1290 transitions. Word has length 98
[2022-11-02 20:41:58,950 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:41:58,950 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1290 transitions.
[2022-11-02 20:41:58,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:41:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1290 transitions.
[2022-11-02 20:41:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:41:58,952 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:41:58,952 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:41:58,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0
[2022-11-02 20:41:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:41:59,169 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:41:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:41:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1643920227, now seen corresponding path program 1 times
[2022-11-02 20:41:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:41:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070943474]
[2022-11-02 20:41:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:41:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:41:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:41:59,173 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:41:59,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process
[2022-11-02 20:41:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:41:59,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-11-02 20:41:59,376 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:41:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 52 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2022-11-02 20:41:59,799 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 52 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2022-11-02 20:42:00,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:00,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070943474]
[2022-11-02 20:42:00,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070943474] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:00,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:00,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24
[2022-11-02 20:42:00,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133747749]
[2022-11-02 20:42:00,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:00,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-11-02 20:42:00,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-11-02 20:42:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:42:00,420 INFO L87 Difference]: Start difference. First operand 995 states and 1290 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:02,054 INFO L93 Difference]: Finished difference Result 5519 states and 7271 transitions.
[2022-11-02 20:42:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2022-11-02 20:42:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 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 98
[2022-11-02 20:42:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:02,061 INFO L225 Difference]: With dead ends: 5519
[2022-11-02 20:42:02,061 INFO L226 Difference]: Without dead ends: 4712
[2022-11-02 20:42:02,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=505, Invalid=3035, Unknown=0, NotChecked=0, Total=3540
[2022-11-02 20:42:02,064 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 840 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 502 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:02,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 3262 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 243 Invalid, 0 Unknown, 502 Unchecked, 0.3s Time]
[2022-11-02 20:42:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states.
[2022-11-02 20:42:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 995.
[2022-11-02 20:42:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.2907444668008048) internal successors, (1283), 994 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1283 transitions.
[2022-11-02 20:42:02,201 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1283 transitions. Word has length 98
[2022-11-02 20:42:02,202 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:02,202 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1283 transitions.
[2022-11-02 20:42:02,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1283 transitions.
[2022-11-02 20:42:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:02,203 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:02,204 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:02,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0
[2022-11-02 20:42:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:02,419 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash 279307807, now seen corresponding path program 1 times
[2022-11-02 20:42:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:02,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872490224]
[2022-11-02 20:42:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:42:02,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:02,422 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:02,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process
[2022-11-02 20:42:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:42:02,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 47 conjunts are in the unsatisfiable core
[2022-11-02 20:42:02,634 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-02 20:42:04,386 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-02 20:42:09,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:09,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872490224]
[2022-11-02 20:42:09,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872490224] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:09,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:09,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48
[2022-11-02 20:42:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098485785]
[2022-11-02 20:42:09,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2022-11-02 20:42:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2022-11-02 20:42:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256
[2022-11-02 20:42:09,253 INFO L87 Difference]: Start difference. First operand 995 states and 1283 transitions. Second operand has 48 states, 48 states have (on average 3.7083333333333335) internal successors, (178), 48 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:24,675 INFO L93 Difference]: Finished difference Result 4315 states and 5730 transitions.
[2022-11-02 20:42:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states.
[2022-11-02 20:42:24,676 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.7083333333333335) internal successors, (178), 48 states have internal predecessors, (178), 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 98
[2022-11-02 20:42:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:24,681 INFO L225 Difference]: With dead ends: 4315
[2022-11-02 20:42:24,681 INFO L226 Difference]: Without dead ends: 4313
[2022-11-02 20:42:24,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 149 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7022 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=3043, Invalid=23689, Unknown=0, NotChecked=0, Total=26732
[2022-11-02 20:42:24,685 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1348 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2279 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:24,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 6496 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1002 Invalid, 0 Unknown, 2279 Unchecked, 1.2s Time]
[2022-11-02 20:42:24,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states.
[2022-11-02 20:42:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 1163.
[2022-11-02 20:42:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.2969018932874354) internal successors, (1507), 1162 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1507 transitions.
[2022-11-02 20:42:24,823 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1507 transitions. Word has length 98
[2022-11-02 20:42:24,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:24,824 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1507 transitions.
[2022-11-02 20:42:24,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.7083333333333335) internal successors, (178), 48 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1507 transitions.
[2022-11-02 20:42:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:24,826 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:24,826 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:24,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0
[2022-11-02 20:42:25,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:25,042 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1303541547, now seen corresponding path program 1 times
[2022-11-02 20:42:25,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:25,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113101034]
[2022-11-02 20:42:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:42:25,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:25,045 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:25,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process
[2022-11-02 20:42:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:42:25,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:42:25,228 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-02 20:42:25,502 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-02 20:42:25,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:25,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113101034]
[2022-11-02 20:42:25,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113101034] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:25,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:25,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-11-02 20:42:25,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303260167]
[2022-11-02 20:42:25,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:25,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 20:42:25,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 20:42:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:42:25,671 INFO L87 Difference]: Start difference. First operand 1163 states and 1507 transitions. Second operand has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:26,205 INFO L93 Difference]: Finished difference Result 3610 states and 4715 transitions.
[2022-11-02 20:42:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-11-02 20:42:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 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 98
[2022-11-02 20:42:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:26,207 INFO L225 Difference]: With dead ends: 3610
[2022-11-02 20:42:26,207 INFO L226 Difference]: Without dead ends: 2537
[2022-11-02 20:42:26,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756
[2022-11-02 20:42:26,208 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 586 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:26,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 661 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 20:42:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states.
[2022-11-02 20:42:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 1163.
[2022-11-02 20:42:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.283132530120482) internal successors, (1491), 1162 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1491 transitions.
[2022-11-02 20:42:26,285 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1491 transitions. Word has length 98
[2022-11-02 20:42:26,285 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:26,286 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1491 transitions.
[2022-11-02 20:42:26,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.785714285714286) internal successors, (151), 14 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1491 transitions.
[2022-11-02 20:42:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:26,287 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:26,288 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:26,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0
[2022-11-02 20:42:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:26,503 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 316412245, now seen corresponding path program 1 times
[2022-11-02 20:42:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696973086]
[2022-11-02 20:42:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:42:26,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:26,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:26,505 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:26,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process
[2022-11-02 20:42:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:42:26,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:42:26,693 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 81 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-02 20:42:26,937 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-02 20:42:27,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:27,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696973086]
[2022-11-02 20:42:27,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696973086] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:27,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:27,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:42:27,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186561369]
[2022-11-02 20:42:27,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:27,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:42:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:42:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:42:27,066 INFO L87 Difference]: Start difference. First operand 1163 states and 1491 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:27,224 INFO L93 Difference]: Finished difference Result 1550 states and 1985 transitions.
[2022-11-02 20:42:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-11-02 20:42:27,224 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 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 98
[2022-11-02 20:42:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:27,225 INFO L225 Difference]: With dead ends: 1550
[2022-11-02 20:42:27,226 INFO L226 Difference]: Without dead ends: 891
[2022-11-02 20:42:27,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2022-11-02 20:42:27,226 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 98 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:27,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 367 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time]
[2022-11-02 20:42:27,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states.
[2022-11-02 20:42:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 859.
[2022-11-02 20:42:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 1.2634032634032635) internal successors, (1084), 858 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1084 transitions.
[2022-11-02 20:42:27,308 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1084 transitions. Word has length 98
[2022-11-02 20:42:27,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:27,308 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1084 transitions.
[2022-11-02 20:42:27,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1084 transitions.
[2022-11-02 20:42:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:27,309 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:27,310 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:27,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0
[2022-11-02 20:42:27,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:27,523 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2127151509, now seen corresponding path program 2 times
[2022-11-02 20:42:27,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:27,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676687805]
[2022-11-02 20:42:27,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:42:27,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:27,526 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:27,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process
[2022-11-02 20:42:27,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:42:27,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:42:27,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:42:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:42:27,892 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 58 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:42:28,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676687805]
[2022-11-02 20:42:28,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676687805] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:28,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:28,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:42:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43477715]
[2022-11-02 20:42:28,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:42:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:42:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:42:28,045 INFO L87 Difference]: Start difference. First operand 859 states and 1084 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:28,300 INFO L93 Difference]: Finished difference Result 1650 states and 2117 transitions.
[2022-11-02 20:42:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-11-02 20:42:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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 98
[2022-11-02 20:42:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:28,301 INFO L225 Difference]: With dead ends: 1650
[2022-11-02 20:42:28,301 INFO L226 Difference]: Without dead ends: 941
[2022-11-02 20:42:28,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506
[2022-11-02 20:42:28,302 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 105 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:28,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 329 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time]
[2022-11-02 20:42:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states.
[2022-11-02 20:42:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 859.
[2022-11-02 20:42:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 1.25990675990676) internal successors, (1081), 858 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1081 transitions.
[2022-11-02 20:42:28,351 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1081 transitions. Word has length 98
[2022-11-02 20:42:28,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:28,351 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1081 transitions.
[2022-11-02 20:42:28,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1081 transitions.
[2022-11-02 20:42:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:28,352 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:28,352 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:28,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0
[2022-11-02 20:42:28,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:28,553 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 740948115, now seen corresponding path program 3 times
[2022-11-02 20:42:28,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:28,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065406814]
[2022-11-02 20:42:28,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 20:42:28,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:28,555 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:28,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process
[2022-11-02 20:42:28,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-11-02 20:42:28,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:42:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:42:28,682 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2022-11-02 20:42:28,833 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2022-11-02 20:42:28,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:28,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065406814]
[2022-11-02 20:42:28,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065406814] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:42:28,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:42:28,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9
[2022-11-02 20:42:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305967158]
[2022-11-02 20:42:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:42:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:42:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:42:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:42:28,877 INFO L87 Difference]: Start difference. First operand 859 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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)
[2022-11-02 20:42:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:29,036 INFO L93 Difference]: Finished difference Result 2366 states and 3043 transitions.
[2022-11-02 20:42:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:42:29,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) Word has length 98
[2022-11-02 20:42:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:29,038 INFO L225 Difference]: With dead ends: 2366
[2022-11-02 20:42:29,039 INFO L226 Difference]: Without dead ends: 1657
[2022-11-02 20:42:29,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-11-02 20:42:29,040 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 196 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:29,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 143 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:42:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states.
[2022-11-02 20:42:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 913.
[2022-11-02 20:42:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 1.2554824561403508) internal successors, (1145), 912 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1145 transitions.
[2022-11-02 20:42:29,107 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1145 transitions. Word has length 98
[2022-11-02 20:42:29,107 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:29,107 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1145 transitions.
[2022-11-02 20:42:29,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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)
[2022-11-02 20:42:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1145 transitions.
[2022-11-02 20:42:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:29,109 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:29,109 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:29,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0
[2022-11-02 20:42:29,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:29,323 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1442547989, now seen corresponding path program 4 times
[2022-11-02 20:42:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:29,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699705397]
[2022-11-02 20:42:29,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-11-02 20:42:29,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:29,325 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:29,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process
[2022-11-02 20:42:29,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-11-02 20:42:29,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:42:29,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:42:29,523 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:42:29,722 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-11-02 20:42:29,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:29,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699705397]
[2022-11-02 20:42:29,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699705397] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:29,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:29,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:42:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244529242]
[2022-11-02 20:42:29,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:29,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:42:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:42:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:42:29,864 INFO L87 Difference]: Start difference. First operand 913 states and 1145 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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)
[2022-11-02 20:42:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:42:30,127 INFO L93 Difference]: Finished difference Result 1830 states and 2312 transitions.
[2022-11-02 20:42:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-11-02 20:42:30,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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 98
[2022-11-02 20:42:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:42:30,128 INFO L225 Difference]: With dead ends: 1830
[2022-11-02 20:42:30,128 INFO L226 Difference]: Without dead ends: 923
[2022-11-02 20:42:30,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506
[2022-11-02 20:42:30,129 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 79 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:42:30,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 316 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time]
[2022-11-02 20:42:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states.
[2022-11-02 20:42:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 839.
[2022-11-02 20:42:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 1.2529832935560858) internal successors, (1050), 838 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:42:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1050 transitions.
[2022-11-02 20:42:30,213 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1050 transitions. Word has length 98
[2022-11-02 20:42:30,214 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:42:30,214 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1050 transitions.
[2022-11-02 20:42:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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)
[2022-11-02 20:42:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1050 transitions.
[2022-11-02 20:42:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:42:30,215 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:42:30,216 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:42:30,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0
[2022-11-02 20:42:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:42:30,430 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:42:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:42:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1871991943, now seen corresponding path program 1 times
[2022-11-02 20:42:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:42:30,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097221798]
[2022-11-02 20:42:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:42:30,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:42:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:42:30,433 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:42:30,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process
[2022-11-02 20:42:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:42:30,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 40 conjunts are in the unsatisfiable core
[2022-11-02 20:42:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:42:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:42:31,652 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:42:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:42:33,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:42:33,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097221798]
[2022-11-02 20:42:33,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097221798] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:42:33,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:42:33,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 47
[2022-11-02 20:42:33,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450192053]
[2022-11-02 20:42:33,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:42:33,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-11-02 20:42:33,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:42:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-11-02 20:42:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2044, Unknown=0, NotChecked=0, Total=2162
[2022-11-02 20:42:33,323 INFO L87 Difference]: Start difference. First operand 839 states and 1050 transitions. Second operand has 47 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 47 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:09,340 INFO L93 Difference]: Finished difference Result 5550 states and 7118 transitions.
[2022-11-02 20:43:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states.
[2022-11-02 20:43:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 47 states have internal predecessors, (164), 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 98
[2022-11-02 20:43:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:09,344 INFO L225 Difference]: With dead ends: 5550
[2022-11-02 20:43:09,344 INFO L226 Difference]: Without dead ends: 4861
[2022-11-02 20:43:09,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41990 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=12561, Invalid=94041, Unknown=0, NotChecked=0, Total=106602
[2022-11-02 20:43:09,353 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 4970 mSDsluCounter, 6796 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4970 SdHoareTripleChecker+Valid, 7078 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:09,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4970 Valid, 7078 Invalid, 4702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 4040 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-11-02 20:43:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states.
[2022-11-02 20:43:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 835.
[2022-11-02 20:43:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.2470023980815348) internal successors, (1040), 834 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1040 transitions.
[2022-11-02 20:43:09,469 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1040 transitions. Word has length 98
[2022-11-02 20:43:09,469 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:09,469 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1040 transitions.
[2022-11-02 20:43:09,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 47 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:09,469 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1040 transitions.
[2022-11-02 20:43:09,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:09,471 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:09,471 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:09,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0
[2022-11-02 20:43:09,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:09,672 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:09,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:09,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1721375479, now seen corresponding path program 2 times
[2022-11-02 20:43:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:09,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104871694]
[2022-11-02 20:43:09,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:43:09,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:09,675 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:09,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process
[2022-11-02 20:43:09,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:43:09,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:09,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-11-02 20:43:09,887 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:43:10,371 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:43:11,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:11,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104871694]
[2022-11-02 20:43:11,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104871694] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:11,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:11,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26
[2022-11-02 20:43:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143085493]
[2022-11-02 20:43:11,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:11,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:43:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:11,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:43:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:43:11,047 INFO L87 Difference]: Start difference. First operand 835 states and 1040 transitions. Second operand has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 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)
[2022-11-02 20:43:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:13,254 INFO L93 Difference]: Finished difference Result 3961 states and 5002 transitions.
[2022-11-02 20:43:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-11-02 20:43:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 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) Word has length 98
[2022-11-02 20:43:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:13,257 INFO L225 Difference]: With dead ends: 3961
[2022-11-02 20:43:13,257 INFO L226 Difference]: Without dead ends: 3276
[2022-11-02 20:43:13,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=759, Invalid=3933, Unknown=0, NotChecked=0, Total=4692
[2022-11-02 20:43:13,259 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 530 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 559 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:13,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2132 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 346 Invalid, 0 Unknown, 559 Unchecked, 0.4s Time]
[2022-11-02 20:43:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states.
[2022-11-02 20:43:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 1051.
[2022-11-02 20:43:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.2495238095238095) internal successors, (1312), 1050 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1312 transitions.
[2022-11-02 20:43:13,349 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1312 transitions. Word has length 98
[2022-11-02 20:43:13,349 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:13,349 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1312 transitions.
[2022-11-02 20:43:13,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.384615384615385) internal successors, (140), 26 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)
[2022-11-02 20:43:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1312 transitions.
[2022-11-02 20:43:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:13,351 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:13,351 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:13,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:13,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:13,563 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:13,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1180883953, now seen corresponding path program 1 times
[2022-11-02 20:43:13,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:13,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817509719]
[2022-11-02 20:43:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:43:13,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:13,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:13,565 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:13,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process
[2022-11-02 20:43:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:43:13,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 40 conjunts are in the unsatisfiable core
[2022-11-02 20:43:13,769 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:43:14,915 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:43:16,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:16,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817509719]
[2022-11-02 20:43:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817509719] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:16,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:16,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 47
[2022-11-02 20:43:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319507804]
[2022-11-02 20:43:16,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:16,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2022-11-02 20:43:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2022-11-02 20:43:16,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2044, Unknown=0, NotChecked=0, Total=2162
[2022-11-02 20:43:16,658 INFO L87 Difference]: Start difference. First operand 1051 states and 1312 transitions. Second operand has 47 states, 47 states have (on average 3.617021276595745) internal successors, (170), 47 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:30,998 INFO L93 Difference]: Finished difference Result 4029 states and 5130 transitions.
[2022-11-02 20:43:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states.
[2022-11-02 20:43:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.617021276595745) internal successors, (170), 47 states have internal predecessors, (170), 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 98
[2022-11-02 20:43:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:31,000 INFO L225 Difference]: With dead ends: 4029
[2022-11-02 20:43:31,000 INFO L226 Difference]: Without dead ends: 3128
[2022-11-02 20:43:31,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7672 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3496, Invalid=24560, Unknown=0, NotChecked=0, Total=28056
[2022-11-02 20:43:31,003 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 3652 mSDsluCounter, 3955 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3652 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:31,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3652 Valid, 4106 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2022-11-02 20:43:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states.
[2022-11-02 20:43:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 1075.
[2022-11-02 20:43:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.2458100558659218) internal successors, (1338), 1074 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1338 transitions.
[2022-11-02 20:43:31,093 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1338 transitions. Word has length 98
[2022-11-02 20:43:31,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:31,093 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1338 transitions.
[2022-11-02 20:43:31,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.617021276595745) internal successors, (170), 47 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1338 transitions.
[2022-11-02 20:43:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:31,095 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:31,095 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:31,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:31,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:31,310 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 765102991, now seen corresponding path program 2 times
[2022-11-02 20:43:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:31,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997996358]
[2022-11-02 20:43:31,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:43:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:31,312 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:31,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process
[2022-11-02 20:43:31,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:43:31,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:31,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-11-02 20:43:31,499 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 44 proven. 36 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:43:32,057 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 44 proven. 36 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:43:32,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997996358]
[2022-11-02 20:43:32,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997996358] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:32,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:32,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26
[2022-11-02 20:43:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192907648]
[2022-11-02 20:43:32,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:43:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:43:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:43:32,561 INFO L87 Difference]: Start difference. First operand 1075 states and 1338 transitions. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:35,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:35,786 INFO L93 Difference]: Finished difference Result 6319 states and 7955 transitions.
[2022-11-02 20:43:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-11-02 20:43:35,786 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 98
[2022-11-02 20:43:35,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:35,790 INFO L225 Difference]: With dead ends: 6319
[2022-11-02 20:43:35,790 INFO L226 Difference]: Without dead ends: 5394
[2022-11-02 20:43:35,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1440, Invalid=5366, Unknown=0, NotChecked=0, Total=6806
[2022-11-02 20:43:35,793 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1165 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:35,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 2456 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:43:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states.
[2022-11-02 20:43:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 1107.
[2022-11-02 20:43:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 1.240506329113924) internal successors, (1372), 1106 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1372 transitions.
[2022-11-02 20:43:35,948 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1372 transitions. Word has length 98
[2022-11-02 20:43:35,948 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:35,948 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1372 transitions.
[2022-11-02 20:43:35,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1372 transitions.
[2022-11-02 20:43:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:35,950 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:35,950 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:35,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0
[2022-11-02 20:43:36,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:36,156 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1040335343, now seen corresponding path program 3 times
[2022-11-02 20:43:36,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:36,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963993110]
[2022-11-02 20:43:36,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 20:43:36,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:36,158 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process
[2022-11-02 20:43:36,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-11-02 20:43:36,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:36,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-11-02 20:43:36,293 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-11-02 20:43:36,369 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2022-11-02 20:43:36,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963993110]
[2022-11-02 20:43:36,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963993110] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:43:36,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:43:36,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2022-11-02 20:43:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523278786]
[2022-11-02 20:43:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:43:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:43:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:43:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:43:36,429 INFO L87 Difference]: Start difference. First operand 1107 states and 1372 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:36,789 INFO L93 Difference]: Finished difference Result 3106 states and 3901 transitions.
[2022-11-02 20:43:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:43:36,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 98
[2022-11-02 20:43:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:36,791 INFO L225 Difference]: With dead ends: 3106
[2022-11-02 20:43:36,791 INFO L226 Difference]: Without dead ends: 2149
[2022-11-02 20:43:36,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:43:36,793 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 128 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:36,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 210 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:43:36,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states.
[2022-11-02 20:43:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1163.
[2022-11-02 20:43:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.2392426850258176) internal successors, (1440), 1162 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1440 transitions.
[2022-11-02 20:43:36,882 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1440 transitions. Word has length 98
[2022-11-02 20:43:36,883 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:36,883 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1440 transitions.
[2022-11-02 20:43:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1440 transitions.
[2022-11-02 20:43:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:36,884 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:36,884 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:36,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:37,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:37,087 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1666284051, now seen corresponding path program 4 times
[2022-11-02 20:43:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:37,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155785338]
[2022-11-02 20:43:37,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-11-02 20:43:37,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:37,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:37,090 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:37,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process
[2022-11-02 20:43:37,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-11-02 20:43:37,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:37,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-11-02 20:43:37,300 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:43:38,050 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-11-02 20:43:39,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:39,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155785338]
[2022-11-02 20:43:39,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155785338] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:39,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:39,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28
[2022-11-02 20:43:39,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397529898]
[2022-11-02 20:43:39,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:39,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-11-02 20:43:39,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-11-02 20:43:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756
[2022-11-02 20:43:39,370 INFO L87 Difference]: Start difference. First operand 1163 states and 1440 transitions. Second operand has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:41,383 INFO L93 Difference]: Finished difference Result 4185 states and 5218 transitions.
[2022-11-02 20:43:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-11-02 20:43:41,383 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 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 98
[2022-11-02 20:43:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:41,385 INFO L225 Difference]: With dead ends: 4185
[2022-11-02 20:43:41,385 INFO L226 Difference]: Without dead ends: 3172
[2022-11-02 20:43:41,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=587, Invalid=3573, Unknown=0, NotChecked=0, Total=4160
[2022-11-02 20:43:41,387 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 347 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 497 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:41,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 2073 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 497 Unchecked, 0.3s Time]
[2022-11-02 20:43:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states.
[2022-11-02 20:43:41,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 1179.
[2022-11-02 20:43:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 1.2359932088285228) internal successors, (1456), 1178 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1456 transitions.
[2022-11-02 20:43:41,509 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1456 transitions. Word has length 98
[2022-11-02 20:43:41,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:41,509 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1456 transitions.
[2022-11-02 20:43:41,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1456 transitions.
[2022-11-02 20:43:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:41,510 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:41,510 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:41,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:41,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:41,723 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash -142621169, now seen corresponding path program 5 times
[2022-11-02 20:43:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:41,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550807158]
[2022-11-02 20:43:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-11-02 20:43:41,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:41,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:41,725 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:41,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process
[2022-11-02 20:43:41,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-11-02 20:43:41,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:41,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:43:41,968 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2022-11-02 20:43:42,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:43:42,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:42,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550807158]
[2022-11-02 20:43:42,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550807158] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:43:42,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:43:42,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:43:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4037609]
[2022-11-02 20:43:42,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:43:42,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:43:42,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:43:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:43:42,021 INFO L87 Difference]: Start difference. First operand 1179 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:42,355 INFO L93 Difference]: Finished difference Result 2813 states and 3542 transitions.
[2022-11-02 20:43:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:43:42,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 98
[2022-11-02 20:43:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:42,358 INFO L225 Difference]: With dead ends: 2813
[2022-11-02 20:43:42,358 INFO L226 Difference]: Without dead ends: 1784
[2022-11-02 20:43:42,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:43:42,360 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 169 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:42,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 168 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:43:42,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states.
[2022-11-02 20:43:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1179.
[2022-11-02 20:43:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 1.2224108658743633) internal successors, (1440), 1178 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1440 transitions.
[2022-11-02 20:43:42,453 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1440 transitions. Word has length 98
[2022-11-02 20:43:42,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:42,453 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1440 transitions.
[2022-11-02 20:43:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1440 transitions.
[2022-11-02 20:43:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:42,454 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:42,454 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:42,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0
[2022-11-02 20:43:42,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:42,655 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 96433227, now seen corresponding path program 3 times
[2022-11-02 20:43:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522729432]
[2022-11-02 20:43:42,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 20:43:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:42,657 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:42,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process
[2022-11-02 20:43:42,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-11-02 20:43:42,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:42,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:43:42,782 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2022-11-02 20:43:43,134 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 44 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2022-11-02 20:43:43,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522729432]
[2022-11-02 20:43:43,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522729432] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:43,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:43,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:43:43,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977843336]
[2022-11-02 20:43:43,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:43,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:43:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:43,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:43:43,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:43:43,587 INFO L87 Difference]: Start difference. First operand 1179 states and 1440 transitions. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:44,254 INFO L93 Difference]: Finished difference Result 3120 states and 3864 transitions.
[2022-11-02 20:43:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-11-02 20:43:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 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 98
[2022-11-02 20:43:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:44,262 INFO L225 Difference]: With dead ends: 3120
[2022-11-02 20:43:44,262 INFO L226 Difference]: Without dead ends: 2091
[2022-11-02 20:43:44,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:43:44,265 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 305 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:44,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 343 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:43:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states.
[2022-11-02 20:43:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1199.
[2022-11-02 20:43:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 1.2186978297161937) internal successors, (1460), 1198 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1460 transitions.
[2022-11-02 20:43:44,373 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1460 transitions. Word has length 98
[2022-11-02 20:43:44,373 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:44,373 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1460 transitions.
[2022-11-02 20:43:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1460 transitions.
[2022-11-02 20:43:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:44,375 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:44,375 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:44,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:44,576 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1709005107, now seen corresponding path program 4 times
[2022-11-02 20:43:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115175211]
[2022-11-02 20:43:44,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-11-02 20:43:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:44,578 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:44,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process
[2022-11-02 20:43:44,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-11-02 20:43:44,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:44,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-11-02 20:43:44,777 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-11-02 20:43:45,358 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-11-02 20:43:46,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:46,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115175211]
[2022-11-02 20:43:46,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115175211] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:46,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:46,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2022-11-02 20:43:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022860911]
[2022-11-02 20:43:46,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:43:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:43:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:43:46,471 INFO L87 Difference]: Start difference. First operand 1199 states and 1460 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 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)
[2022-11-02 20:43:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:47,081 INFO L93 Difference]: Finished difference Result 2296 states and 2813 transitions.
[2022-11-02 20:43:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-11-02 20:43:47,081 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 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) Word has length 98
[2022-11-02 20:43:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:47,083 INFO L225 Difference]: With dead ends: 2296
[2022-11-02 20:43:47,083 INFO L226 Difference]: Without dead ends: 1247
[2022-11-02 20:43:47,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260
[2022-11-02 20:43:47,084 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 102 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:47,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1468 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 304 Unchecked, 0.2s Time]
[2022-11-02 20:43:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states.
[2022-11-02 20:43:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1233.
[2022-11-02 20:43:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.2150974025974026) internal successors, (1497), 1232 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1497 transitions.
[2022-11-02 20:43:47,182 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1497 transitions. Word has length 98
[2022-11-02 20:43:47,183 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:47,183 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1497 transitions.
[2022-11-02 20:43:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 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)
[2022-11-02 20:43:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1497 transitions.
[2022-11-02 20:43:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2022-11-02 20:43:47,184 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:47,185 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:47,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0
[2022-11-02 20:43:47,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:47,385 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:47,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1687048785, now seen corresponding path program 5 times
[2022-11-02 20:43:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:47,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332486436]
[2022-11-02 20:43:47,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-11-02 20:43:47,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:47,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:47,387 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:47,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process
[2022-11-02 20:43:47,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:43:47,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:47,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:43:47,558 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-11-02 20:43:47,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:43:47,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:47,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332486436]
[2022-11-02 20:43:47,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332486436] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:43:47,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:43:47,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:43:47,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246863650]
[2022-11-02 20:43:47,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:43:47,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:43:47,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:43:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:43:47,623 INFO L87 Difference]: Start difference. First operand 1233 states and 1497 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:47,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:47,925 INFO L93 Difference]: Finished difference Result 3004 states and 3707 transitions.
[2022-11-02 20:43:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:43:47,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 98
[2022-11-02 20:43:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:47,928 INFO L225 Difference]: With dead ends: 3004
[2022-11-02 20:43:47,928 INFO L226 Difference]: Without dead ends: 1939
[2022-11-02 20:43:47,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:43:47,929 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 144 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:47,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 197 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:43:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states.
[2022-11-02 20:43:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1213.
[2022-11-02 20:43:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.2004950495049505) internal successors, (1455), 1212 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1455 transitions.
[2022-11-02 20:43:48,026 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1455 transitions. Word has length 98
[2022-11-02 20:43:48,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:48,027 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1455 transitions.
[2022-11-02 20:43:48,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1455 transitions.
[2022-11-02 20:43:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:43:48,028 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:48,028 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:48,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0
[2022-11-02 20:43:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:48,231 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash 474320579, now seen corresponding path program 1 times
[2022-11-02 20:43:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:48,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358709578]
[2022-11-02 20:43:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:43:48,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:48,234 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:48,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process
[2022-11-02 20:43:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:43:48,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-11-02 20:43:48,493 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 102 proven. 64 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-11-02 20:43:49,390 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 102 proven. 64 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-11-02 20:43:50,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:50,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358709578]
[2022-11-02 20:43:50,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358709578] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:50,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:50,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2022-11-02 20:43:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182504203]
[2022-11-02 20:43:50,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:43:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:43:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:43:50,698 INFO L87 Difference]: Start difference. First operand 1213 states and 1455 transitions. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:51,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:51,547 INFO L93 Difference]: Finished difference Result 1789 states and 2151 transitions.
[2022-11-02 20:43:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-11-02 20:43:51,548 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 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 129
[2022-11-02 20:43:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:51,549 INFO L225 Difference]: With dead ends: 1789
[2022-11-02 20:43:51,549 INFO L226 Difference]: Without dead ends: 1289
[2022-11-02 20:43:51,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=241, Invalid=1565, Unknown=0, NotChecked=0, Total=1806
[2022-11-02 20:43:51,550 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 236 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:51,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1202 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 304 Unchecked, 0.1s Time]
[2022-11-02 20:43:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states.
[2022-11-02 20:43:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1239.
[2022-11-02 20:43:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.197092084006462) internal successors, (1482), 1238 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1482 transitions.
[2022-11-02 20:43:51,661 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1482 transitions. Word has length 129
[2022-11-02 20:43:51,661 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:51,661 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1482 transitions.
[2022-11-02 20:43:51,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1482 transitions.
[2022-11-02 20:43:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:43:51,663 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:51,663 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:51,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0
[2022-11-02 20:43:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:51,878 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1598641187, now seen corresponding path program 5 times
[2022-11-02 20:43:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:51,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060051945]
[2022-11-02 20:43:51,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-11-02 20:43:51,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:51,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:51,880 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:51,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process
[2022-11-02 20:43:52,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-11-02 20:43:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:52,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 20:43:52,098 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2022-11-02 20:43:52,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:43:52,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:52,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060051945]
[2022-11-02 20:43:52,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060051945] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:43:52,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:43:52,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-02 20:43:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283781345]
[2022-11-02 20:43:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:43:52,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:43:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:43:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:43:52,164 INFO L87 Difference]: Start difference. First operand 1239 states and 1482 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:52,421 INFO L93 Difference]: Finished difference Result 2779 states and 3372 transitions.
[2022-11-02 20:43:52,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-11-02 20:43:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 129
[2022-11-02 20:43:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:52,423 INFO L225 Difference]: With dead ends: 2779
[2022-11-02 20:43:52,424 INFO L226 Difference]: Without dead ends: 1742
[2022-11-02 20:43:52,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 20:43:52,425 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 175 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:52,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 145 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:43:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states.
[2022-11-02 20:43:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1239.
[2022-11-02 20:43:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.184168012924071) internal successors, (1466), 1238 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1466 transitions.
[2022-11-02 20:43:52,522 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1466 transitions. Word has length 129
[2022-11-02 20:43:52,522 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:52,522 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1466 transitions.
[2022-11-02 20:43:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1466 transitions.
[2022-11-02 20:43:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:43:52,524 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:52,524 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:52,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0
[2022-11-02 20:43:52,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:52,724 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 768053407, now seen corresponding path program 6 times
[2022-11-02 20:43:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:52,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509275164]
[2022-11-02 20:43:52,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-11-02 20:43:52,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:52,727 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:52,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process
[2022-11-02 20:43:52,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-11-02 20:43:52,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:52,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-11-02 20:43:52,916 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 59 proven. 33 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked.
[2022-11-02 20:43:53,866 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked.
[2022-11-02 20:43:54,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:54,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509275164]
[2022-11-02 20:43:54,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509275164] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:43:54,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:43:54,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15
[2022-11-02 20:43:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353111451]
[2022-11-02 20:43:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:43:54,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-11-02 20:43:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-11-02 20:43:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2022-11-02 20:43:54,343 INFO L87 Difference]: Start difference. First operand 1239 states and 1466 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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)
[2022-11-02 20:43:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:54,929 INFO L93 Difference]: Finished difference Result 3340 states and 4057 transitions.
[2022-11-02 20:43:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-11-02 20:43:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) Word has length 129
[2022-11-02 20:43:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:54,933 INFO L225 Difference]: With dead ends: 3340
[2022-11-02 20:43:54,933 INFO L226 Difference]: Without dead ends: 2303
[2022-11-02 20:43:54,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:43:54,934 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 371 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:54,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 229 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:43:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states.
[2022-11-02 20:43:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1373.
[2022-11-02 20:43:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 1.185131195335277) internal successors, (1626), 1372 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1626 transitions.
[2022-11-02 20:43:55,033 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1626 transitions. Word has length 129
[2022-11-02 20:43:55,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:55,033 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1626 transitions.
[2022-11-02 20:43:55,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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)
[2022-11-02 20:43:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1626 transitions.
[2022-11-02 20:43:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:43:55,034 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:55,035 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:55,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:55,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:55,235 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1751906527, now seen corresponding path program 7 times
[2022-11-02 20:43:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:55,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075626888]
[2022-11-02 20:43:55,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-11-02 20:43:55,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:55,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:55,238 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:55,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process
[2022-11-02 20:43:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:43:55,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-11-02 20:43:55,486 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:43:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 59 proven. 58 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2022-11-02 20:43:56,598 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:43:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 59 proven. 58 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2022-11-02 20:43:58,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:43:58,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075626888]
[2022-11-02 20:43:58,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075626888] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:43:58,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:43:58,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2022-11-02 20:43:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998663789]
[2022-11-02 20:43:58,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:43:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:43:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:43:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:43:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:43:58,027 INFO L87 Difference]: Start difference. First operand 1373 states and 1626 transitions. Second operand has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 26 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:43:59,158 INFO L93 Difference]: Finished difference Result 3156 states and 3756 transitions.
[2022-11-02 20:43:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2022-11-02 20:43:59,159 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 26 states have internal predecessors, (155), 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 129
[2022-11-02 20:43:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:43:59,161 INFO L225 Difference]: With dead ends: 3156
[2022-11-02 20:43:59,162 INFO L226 Difference]: Without dead ends: 1985
[2022-11-02 20:43:59,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=315, Invalid=1847, Unknown=0, NotChecked=0, Total=2162
[2022-11-02 20:43:59,164 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 186 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 20:43:59,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1226 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 218 Invalid, 0 Unknown, 324 Unchecked, 0.2s Time]
[2022-11-02 20:43:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states.
[2022-11-02 20:43:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1273.
[2022-11-02 20:43:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 1.1839622641509433) internal successors, (1506), 1272 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1506 transitions.
[2022-11-02 20:43:59,328 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1506 transitions. Word has length 129
[2022-11-02 20:43:59,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:43:59,329 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1506 transitions.
[2022-11-02 20:43:59,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 26 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:43:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1506 transitions.
[2022-11-02 20:43:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:43:59,331 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:43:59,331 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:43:59,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0
[2022-11-02 20:43:59,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:43:59,535 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:43:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:43:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1422982315, now seen corresponding path program 2 times
[2022-11-02 20:43:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:43:59,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083483300]
[2022-11-02 20:43:59,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:43:59,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:43:59,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:43:59,538 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:43:59,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process
[2022-11-02 20:43:59,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:43:59,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:43:59,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 20:43:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:44:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 160 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-11-02 20:44:00,120 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:44:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 108 proven. 62 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-11-02 20:44:00,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:44:00,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083483300]
[2022-11-02 20:44:00,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083483300] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:44:00,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:44:00,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2022-11-02 20:44:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478436681]
[2022-11-02 20:44:00,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:44:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-02 20:44:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:44:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-02 20:44:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2022-11-02 20:44:00,328 INFO L87 Difference]: Start difference. First operand 1273 states and 1506 transitions. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:44:00,724 INFO L93 Difference]: Finished difference Result 2792 states and 3327 transitions.
[2022-11-02 20:44:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-11-02 20:44:00,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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 129
[2022-11-02 20:44:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:44:00,726 INFO L225 Difference]: With dead ends: 2792
[2022-11-02 20:44:00,726 INFO L226 Difference]: Without dead ends: 1721
[2022-11-02 20:44:00,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552
[2022-11-02 20:44:00,728 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 117 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:44:00,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 513 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time]
[2022-11-02 20:44:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states.
[2022-11-02 20:44:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1269.
[2022-11-02 20:44:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.1829652996845426) internal successors, (1500), 1268 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1500 transitions.
[2022-11-02 20:44:00,887 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1500 transitions. Word has length 129
[2022-11-02 20:44:00,887 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:44:00,888 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1500 transitions.
[2022-11-02 20:44:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1500 transitions.
[2022-11-02 20:44:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:44:00,890 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:44:00,890 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:44:00,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0
[2022-11-02 20:44:01,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:44:01,102 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:44:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:44:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1735520685, now seen corresponding path program 6 times
[2022-11-02 20:44:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:44:01,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986519012]
[2022-11-02 20:44:01,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-11-02 20:44:01,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:44:01,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:44:01,106 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:44:01,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process
[2022-11-02 20:44:01,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-11-02 20:44:01,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:44:01,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 14 conjunts are in the unsatisfiable core
[2022-11-02 20:44:01,290 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:44:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 44 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked.
[2022-11-02 20:44:01,351 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:44:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked.
[2022-11-02 20:44:01,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:44:01,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986519012]
[2022-11-02 20:44:01,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986519012] provided 1 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:44:01,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:44:01,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2022-11-02 20:44:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686299611]
[2022-11-02 20:44:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:44:01,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 20:44:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:44:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 20:44:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:44:01,381 INFO L87 Difference]: Start difference. First operand 1269 states and 1500 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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)
[2022-11-02 20:44:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:44:01,585 INFO L93 Difference]: Finished difference Result 2977 states and 3572 transitions.
[2022-11-02 20:44:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 20:44:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 129
[2022-11-02 20:44:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:44:01,588 INFO L225 Difference]: With dead ends: 2977
[2022-11-02 20:44:01,588 INFO L226 Difference]: Without dead ends: 1910
[2022-11-02 20:44:01,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2022-11-02 20:44:01,589 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 78 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 20:44:01,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 20:44:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states.
[2022-11-02 20:44:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1159.
[2022-11-02 20:44:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 1.1778929188255614) internal successors, (1364), 1158 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1364 transitions.
[2022-11-02 20:44:01,678 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1364 transitions. Word has length 129
[2022-11-02 20:44:01,678 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:44:01,678 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1364 transitions.
[2022-11-02 20:44:01,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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)
[2022-11-02 20:44:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1364 transitions.
[2022-11-02 20:44:01,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:44:01,679 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:44:01,680 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:44:01,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0
[2022-11-02 20:44:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:44:01,880 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:44:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:44:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash -786309613, now seen corresponding path program 7 times
[2022-11-02 20:44:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:44:01,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018332237]
[2022-11-02 20:44:01,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-11-02 20:44:01,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:44:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:44:01,882 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:44:01,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process
[2022-11-02 20:44:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:44:02,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-11-02 20:44:02,128 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:44:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 108 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-11-02 20:44:02,640 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:44:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 108 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-11-02 20:44:03,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:44:03,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018332237]
[2022-11-02 20:44:03,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018332237] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:44:03,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:44:03,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26
[2022-11-02 20:44:03,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351355049]
[2022-11-02 20:44:03,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:44:03,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:44:03,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:44:03,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:44:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:44:03,399 INFO L87 Difference]: Start difference. First operand 1159 states and 1364 transitions. Second operand has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:44:05,087 INFO L93 Difference]: Finished difference Result 3950 states and 4710 transitions.
[2022-11-02 20:44:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-11-02 20:44:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 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 129
[2022-11-02 20:44:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:44:05,090 INFO L225 Difference]: With dead ends: 3950
[2022-11-02 20:44:05,090 INFO L226 Difference]: Without dead ends: 2993
[2022-11-02 20:44:05,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=584, Invalid=2608, Unknown=0, NotChecked=0, Total=3192
[2022-11-02 20:44:05,092 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 815 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-02 20:44:05,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2243 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 414 Unchecked, 0.3s Time]
[2022-11-02 20:44:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states.
[2022-11-02 20:44:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1231.
[2022-11-02 20:44:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 1.175609756097561) internal successors, (1446), 1230 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1446 transitions.
[2022-11-02 20:44:05,209 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1446 transitions. Word has length 129
[2022-11-02 20:44:05,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:44:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1446 transitions.
[2022-11-02 20:44:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1446 transitions.
[2022-11-02 20:44:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:44:05,210 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:44:05,210 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:44:05,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0
[2022-11-02 20:44:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:44:05,411 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:44:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:44:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1499275435, now seen corresponding path program 2 times
[2022-11-02 20:44:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:44:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290219801]
[2022-11-02 20:44:05,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:44:05,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:44:05,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:44:05,413 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:44:05,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process
[2022-11-02 20:44:05,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:44:05,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:44:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-11-02 20:44:05,679 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:44:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 104 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2022-11-02 20:44:06,342 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:44:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 104 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2022-11-02 20:44:06,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 20:44:06,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290219801]
[2022-11-02 20:44:06,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290219801] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:44:06,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 20:44:06,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26
[2022-11-02 20:44:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447802969]
[2022-11-02 20:44:06,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:44:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 20:44:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 20:44:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 20:44:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650
[2022-11-02 20:44:06,943 INFO L87 Difference]: Start difference. First operand 1231 states and 1446 transitions. Second operand has 26 states, 26 states have (on average 7.115384615384615) internal successors, (185), 26 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:44:10,706 INFO L93 Difference]: Finished difference Result 6249 states and 7469 transitions.
[2022-11-02 20:44:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-11-02 20:44:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.115384615384615) internal successors, (185), 26 states have internal predecessors, (185), 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 129
[2022-11-02 20:44:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:44:10,710 INFO L225 Difference]: With dead ends: 6249
[2022-11-02 20:44:10,710 INFO L226 Difference]: Without dead ends: 5220
[2022-11-02 20:44:10,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1723, Invalid=6467, Unknown=0, NotChecked=0, Total=8190
[2022-11-02 20:44:10,713 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1601 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:44:10,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 2242 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:44:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states.
[2022-11-02 20:44:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 1129.
[2022-11-02 20:44:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 1.177304964539007) internal successors, (1328), 1128 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1328 transitions.
[2022-11-02 20:44:10,876 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1328 transitions. Word has length 129
[2022-11-02 20:44:10,876 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:44:10,876 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 1328 transitions.
[2022-11-02 20:44:10,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.115384615384615) internal successors, (185), 26 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:44:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1328 transitions.
[2022-11-02 20:44:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-02 20:44:10,878 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:44:10,878 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:44:10,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0
[2022-11-02 20:44:11,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 20:44:11,091 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:44:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:44:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2103942933, now seen corresponding path program 3 times
[2022-11-02 20:44:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 20:44:11,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351781199]
[2022-11-02 20:44:11,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 20:44:11,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 20:44:11,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 20:44:11,094 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 20:44:11,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe1b1cf8-e285-4763-86c4-64ec9dd38c6c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process
[2022-11-02 20:44:11,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-11-02 20:44:11,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:44:11,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 37 conjunts are in the unsatisfiable core
[2022-11-02 20:44:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:44:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked.
[2022-11-02 20:44:13,302 INFO L328 TraceCheckSpWp]: Computing backward predicates...