./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:42,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:42,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:42,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:42,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:42,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:42,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:42,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:42,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:42,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:42,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:42,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:42,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:42,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:42,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:42,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:42,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:42,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:42,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:42,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:42,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:42,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:42,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:42,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:42,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:42,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:42,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:42,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:42,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:43,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:43,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:43,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:43,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:43,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:43,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:43,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:43,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:43,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:43,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:43,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:43,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:43,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:49:43,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:43,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:43,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:43,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:43,035 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:43,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:43,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:43,036 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:49:43,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:43,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:43,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:49:43,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:49:43,038 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:43,038 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:49:43,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:49:43,039 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:49:43,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:49:43,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:49:43,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:43,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:49:43,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:49:43,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:49:43,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:49:43,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:43,043 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:49:43,043 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:49:43,044 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:49:43,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:43,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:49:43,045 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:49:43,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:43,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:43,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:43,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:43,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:43,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:43,048 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:49:43,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:49:43,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:43,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:43,049 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 [2021-11-12 22:49:43,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:43,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:43,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:43,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:43,313 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:43,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2021-11-12 22:49:43,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/62ed70cc1/af6f1db573e04f6181606d1aed6a517e/FLAGb2918ac30 [2021-11-12 22:49:43,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:43,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2021-11-12 22:49:44,033 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/62ed70cc1/af6f1db573e04f6181606d1aed6a517e/FLAGb2918ac30 [2021-11-12 22:49:44,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/62ed70cc1/af6f1db573e04f6181606d1aed6a517e [2021-11-12 22:49:44,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:44,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:44,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:44,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:44,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:44,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:44" (1/1) ... [2021-11-12 22:49:44,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72da92bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:44, skipping insertion in model container [2021-11-12 22:49:44,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:44" (1/1) ... [2021-11-12 22:49:44,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:44,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:44,858 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i[33022,33035] [2021-11-12 22:49:45,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:45,151 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:49:45,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e69acdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:45, skipping insertion in model container [2021-11-12 22:49:45,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:45,153 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:49:45,155 INFO L158 Benchmark]: Toolchain (without parser) took 926.70ms. Allocated memory is still 144.7MB. Free memory was 107.3MB in the beginning and 99.8MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:49:45,156 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:49:45,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 923.92ms. Allocated memory is still 144.7MB. Free memory was 107.0MB in the beginning and 99.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:49:45,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 923.92ms. Allocated memory is still 144.7MB. Free memory was 107.0MB in the beginning and 99.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:47,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:47,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:47,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:47,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:47,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:47,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:47,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:47,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:47,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:47,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:47,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:47,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:47,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:47,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:47,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:47,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:47,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:47,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:47,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:47,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:47,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:47,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:47,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:47,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:47,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:47,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:47,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:47,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:47,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:47,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:47,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:47,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:47,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:47,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:47,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:47,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:47,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:47,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:47,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:47,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:47,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 22:49:47,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:47,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:47,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:47,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:47,618 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:47,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:47,619 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:47,619 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:47,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:47,619 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:47,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:49:47,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:49:47,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:47,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:49:47,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:49:47,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:49:47,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:49:47,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:47,624 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:49:47,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:49:47,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:49:47,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:47,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:49:47,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:49:47,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:49:47,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:49:47,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:47,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:47,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:49:47,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:47,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:47,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:47,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:47,627 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:49:47,628 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:49:47,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:47,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:47,628 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_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 [2021-11-12 22:49:48,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:48,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:48,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:48,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:48,079 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:48,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2021-11-12 22:49:48,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/7f21abec5/9a48fb4b984540a1a29eed89636078cc/FLAGa9d0aca97 [2021-11-12 22:49:48,868 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:48,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2021-11-12 22:49:48,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/7f21abec5/9a48fb4b984540a1a29eed89636078cc/FLAGa9d0aca97 [2021-11-12 22:49:49,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/data/7f21abec5/9a48fb4b984540a1a29eed89636078cc [2021-11-12 22:49:49,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:49,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:49,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:49,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:49,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:49,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:49" (1/1) ... [2021-11-12 22:49:49,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121b62ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:49, skipping insertion in model container [2021-11-12 22:49:49,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:49" (1/1) ... [2021-11-12 22:49:49,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:49,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:49,566 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i[33022,33035] [2021-11-12 22:49:49,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:49,898 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:49:49,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:49,958 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i[33022,33035] [2021-11-12 22:49:50,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:50,162 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:49:50,189 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i[33022,33035] [2021-11-12 22:49:50,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:50,340 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:49:50,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50 WrapperNode [2021-11-12 22:49:50,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:50,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:49:50,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:49:50,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:49:50,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:49:50,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:49:50,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:49:50,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:49:50,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:49:50,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:49:50,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:49:50,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:49:50,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (1/1) ... [2021-11-12 22:49:50,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:50,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:50,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:49:50,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:49:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:49:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-12 22:49:50,814 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-12 22:49:50,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:49:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:49:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:49:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:49:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:49:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:49:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:49:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:49:50,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:49:51,135 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 22:50:00,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:50:00,243 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-12 22:50:00,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:50:00 BoogieIcfgContainer [2021-11-12 22:50:00,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:50:00,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:50:00,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:50:00,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:50:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:49:49" (1/3) ... [2021-11-12 22:50:00,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74082885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:50:00, skipping insertion in model container [2021-11-12 22:50:00,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:50" (2/3) ... [2021-11-12 22:50:00,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74082885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:50:00, skipping insertion in model container [2021-11-12 22:50:00,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:50:00" (3/3) ... [2021-11-12 22:50:00,262 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-1.i [2021-11-12 22:50:00,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:50:00,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2021-11-12 22:50:00,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:50:00,340 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:50:00,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2021-11-12 22:50:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-12 22:50:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:50:00,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:00,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:50:00,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:00,427 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-12 22:50:00,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:00,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927564176] [2021-11-12 22:50:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:00,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:00,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:00,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:00,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:50:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:00,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:50:00,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:00,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:00,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:00,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:00,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927564176] [2021-11-12 22:50:00,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927564176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:00,758 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:00,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:50:00,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306783126] [2021-11-12 22:50:00,761 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:00,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:50:00,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:50:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:50:00,795 INFO L87 Difference]: Start difference. First operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:04,660 INFO L93 Difference]: Finished difference Result 2558 states and 2724 transitions. [2021-11-12 22:50:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:50:04,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-12 22:50:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:04,692 INFO L225 Difference]: With dead ends: 2558 [2021-11-12 22:50:04,692 INFO L226 Difference]: Without dead ends: 2556 [2021-11-12 22:50:04,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:50:04,697 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 1951 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3076.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.82ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3714.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:04,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1646 Invalid, 1298 Unknown, 0 Unchecked, 27.82ms Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 3714.21ms Time] [2021-11-12 22:50:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-12 22:50:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2202. [2021-11-12 22:50:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1224 states have (on average 2.037581699346405) internal successors, (2494), 2186 states have internal predecessors, (2494), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2526 transitions. [2021-11-12 22:50:04,841 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2526 transitions. Word has length 3 [2021-11-12 22:50:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:04,841 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 2526 transitions. [2021-11-12 22:50:04,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2526 transitions. [2021-11-12 22:50:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:50:04,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:04,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:50:04,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:05,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:05,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-12 22:50:05,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:05,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861904869] [2021-11-12 22:50:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:05,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:05,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:05,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:50:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:05,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:05,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:05,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:05,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:05,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:05,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861904869] [2021-11-12 22:50:05,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861904869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:05,326 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:05,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:50:05,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672544687] [2021-11-12 22:50:05,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:05,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:05,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:05,329 INFO L87 Difference]: Start difference. First operand 2202 states and 2526 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-12 22:50:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:13,712 INFO L93 Difference]: Finished difference Result 3303 states and 3727 transitions. [2021-11-12 22:50:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:13,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 3 [2021-11-12 22:50:13,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:13,732 INFO L225 Difference]: With dead ends: 3303 [2021-11-12 22:50:13,732 INFO L226 Difference]: Without dead ends: 3303 [2021-11-12 22:50:13,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:13,734 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 2250 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7223.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.18ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8241.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:13,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2258 Valid, 3292 Invalid, 2144 Unknown, 0 Unchecked, 29.18ms Time], IncrementalHoareTripleChecker [23 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 8241.62ms Time] [2021-11-12 22:50:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-11-12 22:50:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2366. [2021-11-12 22:50:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 1400 states have (on average 2.025714285714286) internal successors, (2836), 2350 states have internal predecessors, (2836), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 2868 transitions. [2021-11-12 22:50:13,812 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 2868 transitions. Word has length 3 [2021-11-12 22:50:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:13,813 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 2868 transitions. [2021-11-12 22:50:13,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-12 22:50:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 2868 transitions. [2021-11-12 22:50:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:50:13,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:13,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:13,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:50:14,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:14,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-12 22:50:14,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:14,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080385257] [2021-11-12 22:50:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:14,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:14,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:14,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:14,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:50:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:14,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:50:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:14,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:14,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:14,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:14,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080385257] [2021-11-12 22:50:14,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080385257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:14,289 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:14,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:50:14,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940605135] [2021-11-12 22:50:14,291 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:14,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:50:14,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:50:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:50:14,294 INFO L87 Difference]: Start difference. First operand 2366 states and 2868 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:17,989 INFO L93 Difference]: Finished difference Result 3104 states and 3606 transitions. [2021-11-12 22:50:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:50:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-12 22:50:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:18,004 INFO L225 Difference]: With dead ends: 3104 [2021-11-12 22:50:18,004 INFO L226 Difference]: Without dead ends: 3104 [2021-11-12 22:50:18,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:50:18,006 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 1987 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3074.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.60ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3617.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:18,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2597 Invalid, 1475 Unknown, 0 Unchecked, 16.60ms Time], IncrementalHoareTripleChecker [102 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 3617.61ms Time] [2021-11-12 22:50:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-12 22:50:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2275. [2021-11-12 22:50:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1400 states have (on average 1.9364285714285714) internal successors, (2711), 2259 states have internal predecessors, (2711), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2743 transitions. [2021-11-12 22:50:18,067 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2743 transitions. Word has length 8 [2021-11-12 22:50:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:18,067 INFO L470 AbstractCegarLoop]: Abstraction has 2275 states and 2743 transitions. [2021-11-12 22:50:18,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2743 transitions. [2021-11-12 22:50:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:50:18,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:18,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:18,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:18,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:18,285 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-12 22:50:18,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:18,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615021067] [2021-11-12 22:50:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:18,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:18,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:18,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:50:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:18,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:18,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:18,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:18,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:18,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:18,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615021067] [2021-11-12 22:50:18,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615021067] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:18,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:18,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:50:18,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922209748] [2021-11-12 22:50:18,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:18,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:18,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:18,610 INFO L87 Difference]: Start difference. First operand 2275 states and 2743 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:27,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:27,114 INFO L93 Difference]: Finished difference Result 3232 states and 3635 transitions. [2021-11-12 22:50:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:50:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:27,126 INFO L225 Difference]: With dead ends: 3232 [2021-11-12 22:50:27,127 INFO L226 Difference]: Without dead ends: 3232 [2021-11-12 22:50:27,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:27,128 INFO L933 BasicCegarLoop]: 2282 mSDtfsCounter, 1443 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7502.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.92ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8424.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:27,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 4240 Invalid, 2403 Unknown, 0 Unchecked, 16.92ms Time], IncrementalHoareTripleChecker [27 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 8424.32ms Time] [2021-11-12 22:50:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2021-11-12 22:50:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2267. [2021-11-12 22:50:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 1402 states have (on average 1.9194008559201141) internal successors, (2691), 2251 states have internal predecessors, (2691), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 2723 transitions. [2021-11-12 22:50:27,197 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 2723 transitions. Word has length 8 [2021-11-12 22:50:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:27,198 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 2723 transitions. [2021-11-12 22:50:27,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 2723 transitions. [2021-11-12 22:50:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:50:27,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:27,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:27,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:27,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:27,410 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-12 22:50:27,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:27,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954665288] [2021-11-12 22:50:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:27,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:27,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:27,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:27,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:50:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:27,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:50:27,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:27,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:27,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:27,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954665288] [2021-11-12 22:50:27,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954665288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:27,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:27,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:50:27,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097688632] [2021-11-12 22:50:27,644 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:27,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:27,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:27,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:27,646 INFO L87 Difference]: Start difference. First operand 2267 states and 2723 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:27,707 INFO L93 Difference]: Finished difference Result 2225 states and 2680 transitions. [2021-11-12 22:50:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:50:27,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:50:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:27,720 INFO L225 Difference]: With dead ends: 2225 [2021-11-12 22:50:27,720 INFO L226 Difference]: Without dead ends: 2225 [2021-11-12 22:50:27,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:27,723 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1592 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:27,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 3210 Invalid, 17 Unknown, 0 Unchecked, 10.15ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 28.16ms Time] [2021-11-12 22:50:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-11-12 22:50:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2021-11-12 22:50:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1384 states have (on average 1.9132947976878614) internal successors, (2648), 2209 states have internal predecessors, (2648), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2680 transitions. [2021-11-12 22:50:27,796 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2680 transitions. Word has length 11 [2021-11-12 22:50:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:27,796 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 2680 transitions. [2021-11-12 22:50:27,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2680 transitions. [2021-11-12 22:50:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:50:27,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:27,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:27,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:28,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:28,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-12 22:50:28,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:28,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002077046] [2021-11-12 22:50:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:28,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:28,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:28,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:28,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:50:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:28,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:28,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:28,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:28,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:28,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002077046] [2021-11-12 22:50:28,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002077046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:28,270 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:28,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:50:28,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305892175] [2021-11-12 22:50:28,270 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:28,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:50:28,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:50:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:28,272 INFO L87 Difference]: Start difference. First operand 2225 states and 2680 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:28,388 INFO L93 Difference]: Finished difference Result 2204 states and 2652 transitions. [2021-11-12 22:50:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:28,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:50:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:28,401 INFO L225 Difference]: With dead ends: 2204 [2021-11-12 22:50:28,401 INFO L226 Difference]: Without dead ends: 2204 [2021-11-12 22:50:28,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:28,405 INFO L933 BasicCegarLoop]: 1955 mSDtfsCounter, 1524 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.35ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:28,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 5113 Invalid, 80 Unknown, 0 Unchecked, 10.35ms Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 67.13ms Time] [2021-11-12 22:50:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-11-12 22:50:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2203. [2021-11-12 22:50:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1376 states have (on average 1.903343023255814) internal successors, (2619), 2187 states have internal predecessors, (2619), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2651 transitions. [2021-11-12 22:50:28,462 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2651 transitions. Word has length 13 [2021-11-12 22:50:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:28,462 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 2651 transitions. [2021-11-12 22:50:28,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2651 transitions. [2021-11-12 22:50:28,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:50:28,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:28,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:28,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:28,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:28,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-12 22:50:28,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:28,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381136922] [2021-11-12 22:50:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:28,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:28,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:28,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:50:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:28,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:50:28,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:28,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:28,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:28,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381136922] [2021-11-12 22:50:28,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381136922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:28,948 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:28,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:50:28,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445151335] [2021-11-12 22:50:28,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:28,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:28,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:28,950 INFO L87 Difference]: Start difference. First operand 2203 states and 2651 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:29,030 INFO L93 Difference]: Finished difference Result 3480 states and 4065 transitions. [2021-11-12 22:50:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:50:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 20 [2021-11-12 22:50:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:29,047 INFO L225 Difference]: With dead ends: 3480 [2021-11-12 22:50:29,048 INFO L226 Difference]: Without dead ends: 3480 [2021-11-12 22:50:29,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:29,049 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 3762 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:29,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3772 Valid, 4475 Invalid, 23 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 47.90ms Time] [2021-11-12 22:50:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-11-12 22:50:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2161. [2021-11-12 22:50:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1358 states have (on average 1.8969072164948453) internal successors, (2576), 2145 states have internal predecessors, (2576), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2608 transitions. [2021-11-12 22:50:29,099 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2608 transitions. Word has length 20 [2021-11-12 22:50:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:29,099 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 2608 transitions. [2021-11-12 22:50:29,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2608 transitions. [2021-11-12 22:50:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:50:29,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:29,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:29,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:29,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:29,312 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:29,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-12 22:50:29,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:29,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060990872] [2021-11-12 22:50:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:29,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:29,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:50:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:29,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:50:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:29,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:29,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:29,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060990872] [2021-11-12 22:50:29,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060990872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:29,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:29,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:50:29,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367883948] [2021-11-12 22:50:29,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:29,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:29,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:29,586 INFO L87 Difference]: Start difference. First operand 2161 states and 2608 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:29,668 INFO L93 Difference]: Finished difference Result 3353 states and 3884 transitions. [2021-11-12 22:50:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:50:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 20 [2021-11-12 22:50:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:29,686 INFO L225 Difference]: With dead ends: 3353 [2021-11-12 22:50:29,687 INFO L226 Difference]: Without dead ends: 3353 [2021-11-12 22:50:29,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:29,688 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 3676 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.21ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:29,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 4333 Invalid, 23 Unknown, 0 Unchecked, 8.21ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 39.30ms Time] [2021-11-12 22:50:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2021-11-12 22:50:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2083. [2021-11-12 22:50:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1304 states have (on average 1.8765337423312884) internal successors, (2447), 2067 states have internal predecessors, (2447), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2479 transitions. [2021-11-12 22:50:29,737 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2479 transitions. Word has length 20 [2021-11-12 22:50:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:29,737 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2479 transitions. [2021-11-12 22:50:29,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2479 transitions. [2021-11-12 22:50:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:50:29,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:29,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:29,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:29,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:29,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-12 22:50:29,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:29,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797102217] [2021-11-12 22:50:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:29,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:29,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:29,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:50:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:30,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:30,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:30,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:30,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:30,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797102217] [2021-11-12 22:50:30,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797102217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:30,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:30,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:50:30,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801599067] [2021-11-12 22:50:30,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:30,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:50:30,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:50:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:30,247 INFO L87 Difference]: Start difference. First operand 2083 states and 2479 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:30,351 INFO L93 Difference]: Finished difference Result 3339 states and 3865 transitions. [2021-11-12 22:50:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:30,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-12 22:50:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:30,366 INFO L225 Difference]: With dead ends: 3339 [2021-11-12 22:50:30,366 INFO L226 Difference]: Without dead ends: 3339 [2021-11-12 22:50:30,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:30,367 INFO L933 BasicCegarLoop]: 3159 mSDtfsCounter, 3608 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 7676 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.56ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:30,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3618 Valid, 7676 Invalid, 86 Unknown, 0 Unchecked, 6.56ms Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 68.93ms Time] [2021-11-12 22:50:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2021-11-12 22:50:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2061. [2021-11-12 22:50:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1296 states have (on average 1.8657407407407407) internal successors, (2418), 2045 states have internal predecessors, (2418), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2450 transitions. [2021-11-12 22:50:30,413 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2450 transitions. Word has length 22 [2021-11-12 22:50:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:30,414 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 2450 transitions. [2021-11-12 22:50:30,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2450 transitions. [2021-11-12 22:50:30,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:50:30,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:30,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:30,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:30,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:30,627 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-12 22:50:30,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:30,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239347906] [2021-11-12 22:50:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:30,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:30,630 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:30,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:50:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:30,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:30,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:30,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:30,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:30,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239347906] [2021-11-12 22:50:30,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239347906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:30,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:30,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:50:30,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491321451] [2021-11-12 22:50:30,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:30,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:50:30,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:50:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:30,953 INFO L87 Difference]: Start difference. First operand 2061 states and 2450 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:31,115 INFO L93 Difference]: Finished difference Result 3274 states and 3742 transitions. [2021-11-12 22:50:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-12 22:50:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:31,142 INFO L225 Difference]: With dead ends: 3274 [2021-11-12 22:50:31,143 INFO L226 Difference]: Without dead ends: 3274 [2021-11-12 22:50:31,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:31,144 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3538 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.99ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.59ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:31,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 7480 Invalid, 86 Unknown, 0 Unchecked, 9.99ms Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 78.59ms Time] [2021-11-12 22:50:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-11-12 22:50:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2023. [2021-11-12 22:50:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1272 states have (on average 1.8325471698113207) internal successors, (2331), 2007 states have internal predecessors, (2331), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2363 transitions. [2021-11-12 22:50:31,193 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2363 transitions. Word has length 22 [2021-11-12 22:50:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:31,193 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2363 transitions. [2021-11-12 22:50:31,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2363 transitions. [2021-11-12 22:50:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:50:31,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:31,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:31,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:31,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:31,408 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:31,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-12 22:50:31,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:31,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642719469] [2021-11-12 22:50:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:31,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:31,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:31,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:31,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:50:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:31,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:31,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:31,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:31,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:31,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642719469] [2021-11-12 22:50:31,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642719469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:31,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:31,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:50:31,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725778441] [2021-11-12 22:50:31,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:31,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:31,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:31,802 INFO L87 Difference]: Start difference. First operand 2023 states and 2363 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:34,630 INFO L93 Difference]: Finished difference Result 2298 states and 2540 transitions. [2021-11-12 22:50:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 22:50:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:34,635 INFO L225 Difference]: With dead ends: 2298 [2021-11-12 22:50:34,636 INFO L226 Difference]: Without dead ends: 2298 [2021-11-12 22:50:34,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:34,636 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 2347 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2363.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.76ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2784.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:34,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 2015 Invalid, 1502 Unknown, 0 Unchecked, 8.76ms Time], IncrementalHoareTripleChecker [21 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 2784.38ms Time] [2021-11-12 22:50:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-11-12 22:50:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2019. [2021-11-12 22:50:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1272 states have (on average 1.8294025157232705) internal successors, (2327), 2003 states have internal predecessors, (2327), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2359 transitions. [2021-11-12 22:50:34,674 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2359 transitions. Word has length 27 [2021-11-12 22:50:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:34,675 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 2359 transitions. [2021-11-12 22:50:34,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2359 transitions. [2021-11-12 22:50:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:50:34,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:34,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:34,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:34,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:34,887 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-12 22:50:34,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:34,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634623039] [2021-11-12 22:50:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:34,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:34,890 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:50:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:35,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:50:35,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:35,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:35,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:35,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:35,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634623039] [2021-11-12 22:50:35,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634623039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:35,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:35,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:50:35,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279760918] [2021-11-12 22:50:35,666 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:35,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:50:35,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:50:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:35,667 INFO L87 Difference]: Start difference. First operand 2019 states and 2359 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:45,814 INFO L93 Difference]: Finished difference Result 2817 states and 3132 transitions. [2021-11-12 22:50:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:50:45,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 22:50:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:45,819 INFO L225 Difference]: With dead ends: 2817 [2021-11-12 22:50:45,819 INFO L226 Difference]: Without dead ends: 2817 [2021-11-12 22:50:45,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:50:45,820 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 4074 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8864.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.87ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10010.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:45,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4074 Valid, 3717 Invalid, 2702 Unknown, 0 Unchecked, 18.87ms Time], IncrementalHoareTripleChecker [29 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 10010.20ms Time] [2021-11-12 22:50:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-12 22:50:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2052. [2021-11-12 22:50:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1306 states have (on average 1.8101071975497702) internal successors, (2364), 2036 states have internal predecessors, (2364), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2396 transitions. [2021-11-12 22:50:45,915 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2396 transitions. Word has length 27 [2021-11-12 22:50:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:45,916 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2396 transitions. [2021-11-12 22:50:45,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:50:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2396 transitions. [2021-11-12 22:50:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:50:45,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:45,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:45,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:46,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:46,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:46,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-12 22:50:46,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:46,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171075440] [2021-11-12 22:50:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:46,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:46,132 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:46,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:50:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:46,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:46,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:46,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:46,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:46,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:46,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171075440] [2021-11-12 22:50:46,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171075440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:46,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:46,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:50:46,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778690598] [2021-11-12 22:50:46,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:46,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:46,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:46,546 INFO L87 Difference]: Start difference. First operand 2052 states and 2396 transitions. Second operand has 4 states, 3 states have (on average 12.0) 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) [2021-11-12 22:50:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:51,176 INFO L93 Difference]: Finished difference Result 3953 states and 4482 transitions. [2021-11-12 22:50:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) 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 [2021-11-12 22:50:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:51,182 INFO L225 Difference]: With dead ends: 3953 [2021-11-12 22:50:51,182 INFO L226 Difference]: Without dead ends: 3953 [2021-11-12 22:50:51,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:51,183 INFO L933 BasicCegarLoop]: 2430 mSDtfsCounter, 3322 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3866.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.07ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4553.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 4236 Invalid, 2679 Unknown, 0 Unchecked, 16.07ms Time], IncrementalHoareTripleChecker [43 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 4553.41ms Time] [2021-11-12 22:50:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-11-12 22:50:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 2048. [2021-11-12 22:50:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 1306 states have (on average 1.8070444104134762) internal successors, (2360), 2032 states have internal predecessors, (2360), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:50:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2392 transitions. [2021-11-12 22:50:51,221 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2392 transitions. Word has length 36 [2021-11-12 22:50:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:51,221 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 2392 transitions. [2021-11-12 22:50:51,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) 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) [2021-11-12 22:50:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2392 transitions. [2021-11-12 22:50:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:50:51,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:51,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:51,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 22:50:51,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:51,434 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:50:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-12 22:50:51,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:51,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16418231] [2021-11-12 22:50:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:51,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:51,439 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:51,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:50:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:51,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:50:51,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:51,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:51,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:52,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:52,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16418231] [2021-11-12 22:50:52,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16418231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:52,333 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:52,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:50:52,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354532333] [2021-11-12 22:50:52,333 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:52,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:50:52,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:52,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:50:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:52,334 INFO L87 Difference]: Start difference. First operand 2048 states and 2392 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:06,436 INFO L93 Difference]: Finished difference Result 3842 states and 4245 transitions. [2021-11-12 22:51:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:51:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2021-11-12 22:51:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:06,445 INFO L225 Difference]: With dead ends: 3842 [2021-11-12 22:51:06,445 INFO L226 Difference]: Without dead ends: 3842 [2021-11-12 22:51:06,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:51:06,446 INFO L933 BasicCegarLoop]: 2279 mSDtfsCounter, 4734 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12442.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.39ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13906.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:06,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 5980 Invalid, 3810 Unknown, 0 Unchecked, 25.39ms Time], IncrementalHoareTripleChecker [32 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 13906.39ms Time] [2021-11-12 22:51:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-11-12 22:51:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 2044. [2021-11-12 22:51:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1306 states have (on average 1.8039816232771821) internal successors, (2356), 2028 states have internal predecessors, (2356), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:51:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2388 transitions. [2021-11-12 22:51:06,501 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2388 transitions. Word has length 36 [2021-11-12 22:51:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:06,501 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 2388 transitions. [2021-11-12 22:51:06,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2388 transitions. [2021-11-12 22:51:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:51:06,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:06,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:06,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 22:51:06,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:06,715 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-12 22:51:06,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:06,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58198324] [2021-11-12 22:51:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:06,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:06,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:06,717 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:51:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:06,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:06,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:06,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:51:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:07,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:07,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:07,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58198324] [2021-11-12 22:51:07,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58198324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:07,095 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:07,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:51:07,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649585508] [2021-11-12 22:51:07,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:07,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:51:07,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:51:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:51:07,096 INFO L87 Difference]: Start difference. First operand 2044 states and 2388 transitions. Second operand has 4 states, 3 states have (on average 12.0) 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) [2021-11-12 22:51:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:12,192 INFO L93 Difference]: Finished difference Result 4309 states and 4854 transitions. [2021-11-12 22:51:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:51:12,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) 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 [2021-11-12 22:51:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:12,201 INFO L225 Difference]: With dead ends: 4309 [2021-11-12 22:51:12,201 INFO L226 Difference]: Without dead ends: 4309 [2021-11-12 22:51:12,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:51:12,202 INFO L933 BasicCegarLoop]: 1943 mSDtfsCounter, 4462 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4275.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.34ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5015.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:12,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 3938 Invalid, 2605 Unknown, 0 Unchecked, 15.34ms Time], IncrementalHoareTripleChecker [51 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 5015.32ms Time] [2021-11-12 22:51:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2021-11-12 22:51:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 2041. [2021-11-12 22:51:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1306 states have (on average 1.7955589586523737) internal successors, (2345), 2025 states have internal predecessors, (2345), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:51:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2377 transitions. [2021-11-12 22:51:12,240 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2377 transitions. Word has length 36 [2021-11-12 22:51:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:12,241 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2377 transitions. [2021-11-12 22:51:12,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) 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) [2021-11-12 22:51:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2377 transitions. [2021-11-12 22:51:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:51:12,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:12,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:12,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:12,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:12,454 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-12 22:51:12,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:12,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973050847] [2021-11-12 22:51:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:12,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:12,457 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:12,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:51:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:12,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:51:12,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:12,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:51:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:12,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:13,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:13,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973050847] [2021-11-12 22:51:13,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973050847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:13,232 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:13,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:51:13,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790727092] [2021-11-12 22:51:13,232 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:13,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:51:13,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:51:13,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:51:13,233 INFO L87 Difference]: Start difference. First operand 2041 states and 2377 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:30,717 INFO L93 Difference]: Finished difference Result 4039 states and 4512 transitions. [2021-11-12 22:51:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:51:30,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2021-11-12 22:51:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:30,727 INFO L225 Difference]: With dead ends: 4039 [2021-11-12 22:51:30,727 INFO L226 Difference]: Without dead ends: 4039 [2021-11-12 22:51:30,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:51:30,728 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 3276 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 5112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15507.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 7545 SdHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.89ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17306.99ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:30,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3281 Valid, 7545 Invalid, 5137 Unknown, 0 Unchecked, 27.89ms Time], IncrementalHoareTripleChecker [25 Valid, 5112 Invalid, 0 Unknown, 0 Unchecked, 17306.99ms Time] [2021-11-12 22:51:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2021-11-12 22:51:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 2041. [2021-11-12 22:51:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1306 states have (on average 1.7924961715160797) internal successors, (2341), 2025 states have internal predecessors, (2341), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:51:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2373 transitions. [2021-11-12 22:51:30,763 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2373 transitions. Word has length 36 [2021-11-12 22:51:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:30,764 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2373 transitions. [2021-11-12 22:51:30,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2373 transitions. [2021-11-12 22:51:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-12 22:51:30,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:30,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:30,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:30,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:30,976 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-12 22:51:30,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:30,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147088694] [2021-11-12 22:51:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:30,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:30,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:30,979 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:31,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:51:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:31,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:31,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:31,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:31,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:31,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147088694] [2021-11-12 22:51:31,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147088694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:31,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:31,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:51:31,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128023283] [2021-11-12 22:51:31,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:31,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:51:31,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:51:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:51:31,375 INFO L87 Difference]: Start difference. First operand 2041 states and 2373 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:31,419 INFO L93 Difference]: Finished difference Result 2035 states and 2359 transitions. [2021-11-12 22:51:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:51:31,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-12 22:51:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:31,422 INFO L225 Difference]: With dead ends: 2035 [2021-11-12 22:51:31,422 INFO L226 Difference]: Without dead ends: 2035 [2021-11-12 22:51:31,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:51:31,423 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 749 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:31,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 4593 Invalid, 43 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 27.82ms Time] [2021-11-12 22:51:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-12 22:51:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2021-11-12 22:51:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1300 states have (on average 1.79) internal successors, (2327), 2019 states have internal predecessors, (2327), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 22:51:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2359 transitions. [2021-11-12 22:51:31,450 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2359 transitions. Word has length 40 [2021-11-12 22:51:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:31,450 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 2359 transitions. [2021-11-12 22:51:31,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2359 transitions. [2021-11-12 22:51:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-12 22:51:31,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:31,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:31,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:31,664 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-12 22:51:31,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:31,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881012844] [2021-11-12 22:51:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:31,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:31,665 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:31,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:51:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:31,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:32,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:32,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:32,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881012844] [2021-11-12 22:51:32,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881012844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:32,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:32,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:51:32,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311888142] [2021-11-12 22:51:32,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:32,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:51:32,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:51:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:51:32,395 INFO L87 Difference]: Start difference. First operand 2035 states and 2359 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:32,586 INFO L93 Difference]: Finished difference Result 3181 states and 3621 transitions. [2021-11-12 22:51:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:51:32,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-12 22:51:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:32,592 INFO L225 Difference]: With dead ends: 3181 [2021-11-12 22:51:32,593 INFO L226 Difference]: Without dead ends: 3181 [2021-11-12 22:51:32,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:51:32,594 INFO L933 BasicCegarLoop]: 1805 mSDtfsCounter, 1176 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:32,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3475 Invalid, 66 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 165.36ms Time] [2021-11-12 22:51:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-11-12 22:51:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2636. [2021-11-12 22:51:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1899 states have (on average 1.7693522906793049) internal successors, (3360), 2615 states have internal predecessors, (3360), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 22:51:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3402 transitions. [2021-11-12 22:51:32,633 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3402 transitions. Word has length 48 [2021-11-12 22:51:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:32,634 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3402 transitions. [2021-11-12 22:51:32,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3402 transitions. [2021-11-12 22:51:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 22:51:32,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:32,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:32,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:32,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:32,847 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-12 22:51:32,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:32,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945150450] [2021-11-12 22:51:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:32,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:32,848 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:32,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 22:51:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:33,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:33,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:33,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:33,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945150450] [2021-11-12 22:51:33,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945150450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:33,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:33,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:51:33,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078810308] [2021-11-12 22:51:33,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:33,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:51:33,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:51:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:51:33,262 INFO L87 Difference]: Start difference. First operand 2636 states and 3402 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:33,328 INFO L93 Difference]: Finished difference Result 3591 states and 4413 transitions. [2021-11-12 22:51:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:51:33,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) Word has length 51 [2021-11-12 22:51:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:33,333 INFO L225 Difference]: With dead ends: 3591 [2021-11-12 22:51:33,333 INFO L226 Difference]: Without dead ends: 3591 [2021-11-12 22:51:33,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:51:33,334 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 1743 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:33,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 6358 Invalid, 43 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 27.52ms Time] [2021-11-12 22:51:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2021-11-12 22:51:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 2612. [2021-11-12 22:51:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 1875 states have (on average 1.7706666666666666) internal successors, (3320), 2591 states have internal predecessors, (3320), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 22:51:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3362 transitions. [2021-11-12 22:51:33,376 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3362 transitions. Word has length 51 [2021-11-12 22:51:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:33,376 INFO L470 AbstractCegarLoop]: Abstraction has 2612 states and 3362 transitions. [2021-11-12 22:51:33,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3362 transitions. [2021-11-12 22:51:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-12 22:51:33,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:33,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:33,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:33,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:33,590 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-12 22:51:33,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:33,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872636178] [2021-11-12 22:51:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:33,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:33,592 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:33,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 22:51:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:33,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:33,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:34,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:34,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872636178] [2021-11-12 22:51:34,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872636178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:34,084 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:34,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:51:34,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673103964] [2021-11-12 22:51:34,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:34,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:51:34,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:51:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:51:34,085 INFO L87 Difference]: Start difference. First operand 2612 states and 3362 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:34,154 INFO L93 Difference]: Finished difference Result 3336 states and 3911 transitions. [2021-11-12 22:51:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:51:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-12 22:51:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:34,158 INFO L225 Difference]: With dead ends: 3336 [2021-11-12 22:51:34,159 INFO L226 Difference]: Without dead ends: 3336 [2021-11-12 22:51:34,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:51:34,160 INFO L933 BasicCegarLoop]: 2896 mSDtfsCounter, 1734 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 6934 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:34,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 6934 Invalid, 43 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 31.91ms Time] [2021-11-12 22:51:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-11-12 22:51:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2600. [2021-11-12 22:51:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1863 states have (on average 1.7713365539452497) internal successors, (3300), 2579 states have internal predecessors, (3300), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 22:51:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3342 transitions. [2021-11-12 22:51:34,200 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3342 transitions. Word has length 54 [2021-11-12 22:51:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:34,201 INFO L470 AbstractCegarLoop]: Abstraction has 2600 states and 3342 transitions. [2021-11-12 22:51:34,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3342 transitions. [2021-11-12 22:51:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:51:34,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:34,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:34,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:34,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:34,415 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash -495130849, now seen corresponding path program 1 times [2021-11-12 22:51:34,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:34,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353025485] [2021-11-12 22:51:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:34,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:34,417 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:34,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:51:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:34,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:34,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:34,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:51:34,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:51:34,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:51:34,690 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 22:51:34,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 22:51:34,750 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 22:51:34,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 22:51:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:34,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:35,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:35,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353025485] [2021-11-12 22:51:35,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353025485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:35,002 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:35,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:51:35,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966784051] [2021-11-12 22:51:35,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:35,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:51:35,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:51:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:51:35,004 INFO L87 Difference]: Start difference. First operand 2600 states and 3342 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:37,547 INFO L93 Difference]: Finished difference Result 2567 states and 3308 transitions. [2021-11-12 22:51:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:51:37,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-12 22:51:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:37,550 INFO L225 Difference]: With dead ends: 2567 [2021-11-12 22:51:37,550 INFO L226 Difference]: Without dead ends: 2567 [2021-11-12 22:51:37,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:51:37,551 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 755 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2180.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.56ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2485.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:37,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 7449 Invalid, 759 Unknown, 0 Unchecked, 8.56ms Time], IncrementalHoareTripleChecker [3 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 2485.70ms Time] [2021-11-12 22:51:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-11-12 22:51:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2566. [2021-11-12 22:51:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 1829 states have (on average 1.7851284855112084) internal successors, (3265), 2545 states have internal predecessors, (3265), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 22:51:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3307 transitions. [2021-11-12 22:51:37,580 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3307 transitions. Word has length 57 [2021-11-12 22:51:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:37,580 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 3307 transitions. [2021-11-12 22:51:37,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3307 transitions. [2021-11-12 22:51:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:51:37,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:37,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:37,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-12 22:51:37,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:37,798 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-12 22:51:37,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:37,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533585477] [2021-11-12 22:51:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:37,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:37,800 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:37,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 22:51:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:38,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:51:38,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:38,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:38,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:38,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533585477] [2021-11-12 22:51:38,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533585477] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:38,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:38,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:51:38,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772560123] [2021-11-12 22:51:38,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:38,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:51:38,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:38,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:51:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:51:38,797 INFO L87 Difference]: Start difference. First operand 2566 states and 3307 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:38,949 INFO L93 Difference]: Finished difference Result 3547 states and 4402 transitions. [2021-11-12 22:51:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:51:38,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-12 22:51:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:38,954 INFO L225 Difference]: With dead ends: 3547 [2021-11-12 22:51:38,954 INFO L226 Difference]: Without dead ends: 3547 [2021-11-12 22:51:38,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:51:38,955 INFO L933 BasicCegarLoop]: 2011 mSDtfsCounter, 866 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:38,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 3672 Invalid, 64 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 135.86ms Time] [2021-11-12 22:51:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-11-12 22:51:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3211. [2021-11-12 22:51:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 2471 states have (on average 1.7567786321327399) internal successors, (4341), 3184 states have internal predecessors, (4341), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:51:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4395 transitions. [2021-11-12 22:51:38,996 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4395 transitions. Word has length 59 [2021-11-12 22:51:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:38,996 INFO L470 AbstractCegarLoop]: Abstraction has 3211 states and 4395 transitions. [2021-11-12 22:51:38,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4395 transitions. [2021-11-12 22:51:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:51:38,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:38,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:39,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-12 22:51:39,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:39,210 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:39,211 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-12 22:51:39,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:39,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134499313] [2021-11-12 22:51:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:39,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:39,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:39,212 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:39,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 22:51:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:39,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:51:39,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:39,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:51:39,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:51:40,117 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 22:51:40,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-12 22:51:40,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:51:40,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-12 22:51:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:40,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:46,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:46,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134499313] [2021-11-12 22:51:46,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134499313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:46,970 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:46,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:51:46,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280765315] [2021-11-12 22:51:46,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:46,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:51:46,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:46,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:51:46,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-12 22:51:46,972 INFO L87 Difference]: Start difference. First operand 3211 states and 4395 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:48,480 INFO L93 Difference]: Finished difference Result 3475 states and 4584 transitions. [2021-11-12 22:51:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:51:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 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 62 [2021-11-12 22:51:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:48,502 INFO L225 Difference]: With dead ends: 3475 [2021-11-12 22:51:48,502 INFO L226 Difference]: Without dead ends: 3475 [2021-11-12 22:51:48,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-12 22:51:48,507 INFO L933 BasicCegarLoop]: 1807 mSDtfsCounter, 867 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1282.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2186 IncrementalHoareTripleChecker+Unchecked, 1460.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:48,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 4033 Invalid, 2533 Unknown, 0 Unchecked, 10.25ms Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 2186 Unchecked, 1460.82ms Time] [2021-11-12 22:51:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2021-11-12 22:51:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3210. [2021-11-12 22:51:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 2471 states have (on average 1.7559692432213678) internal successors, (4339), 3183 states have internal predecessors, (4339), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:51:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4393 transitions. [2021-11-12 22:51:48,555 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4393 transitions. Word has length 62 [2021-11-12 22:51:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:48,555 INFO L470 AbstractCegarLoop]: Abstraction has 3210 states and 4393 transitions. [2021-11-12 22:51:48,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4393 transitions. [2021-11-12 22:51:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:51:48,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:48,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:48,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:48,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:48,770 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:51:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-12 22:51:48,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:48,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934714030] [2021-11-12 22:51:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:48,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:48,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:48,773 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:48,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 22:51:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:49,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:51:49,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:49,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:51:49,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:51:49,953 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 22:51:49,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-12 22:51:49,958 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:51:49,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-12 22:51:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:49,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:54,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:54,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934714030] [2021-11-12 22:51:54,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934714030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:54,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:54,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:51:54,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820210958] [2021-11-12 22:51:54,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:54,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:51:54,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:54,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:51:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 22:51:54,364 INFO L87 Difference]: Start difference. First operand 3210 states and 4393 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:01,770 INFO L93 Difference]: Finished difference Result 4698 states and 6320 transitions. [2021-11-12 22:52:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:52:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 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 62 [2021-11-12 22:52:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:01,782 INFO L225 Difference]: With dead ends: 4698 [2021-11-12 22:52:01,782 INFO L226 Difference]: Without dead ends: 4698 [2021-11-12 22:52:01,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 22:52:01,783 INFO L933 BasicCegarLoop]: 1219 mSDtfsCounter, 2734 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6264.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.44ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1301 IncrementalHoareTripleChecker+Unchecked, 7312.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:01,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 2798 Invalid, 3673 Unknown, 0 Unchecked, 18.44ms Time], IncrementalHoareTripleChecker [99 Valid, 2273 Invalid, 0 Unknown, 1301 Unchecked, 7312.78ms Time] [2021-11-12 22:52:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2021-11-12 22:52:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 3203. [2021-11-12 22:52:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2524 states have (on average 1.705229793977813) internal successors, (4304), 3176 states have internal predecessors, (4304), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:52:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4358 transitions. [2021-11-12 22:52:01,835 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4358 transitions. Word has length 62 [2021-11-12 22:52:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:01,836 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 4358 transitions. [2021-11-12 22:52:01,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4358 transitions. [2021-11-12 22:52:01,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-12 22:52:01,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:01,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:01,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-12 22:52:02,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:02,051 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-12 22:52:02,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:02,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781461542] [2021-11-12 22:52:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:02,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:02,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:02,053 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:02,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 22:52:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:02,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:52:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:02,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:02,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 22:52:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:02,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:02,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781461542] [2021-11-12 22:52:02,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781461542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:02,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:02,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:52:02,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274737747] [2021-11-12 22:52:02,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:02,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:02,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:02,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:02,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:02,875 INFO L87 Difference]: Start difference. First operand 3203 states and 4358 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:06,072 INFO L93 Difference]: Finished difference Result 3204 states and 4351 transitions. [2021-11-12 22:52:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:52:06,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 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 64 [2021-11-12 22:52:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:06,076 INFO L225 Difference]: With dead ends: 3204 [2021-11-12 22:52:06,077 INFO L226 Difference]: Without dead ends: 3204 [2021-11-12 22:52:06,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:06,077 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 4715 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2728.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4725 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.38ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3151.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:06,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4725 Valid, 1274 Invalid, 887 Unknown, 0 Unchecked, 10.38ms Time], IncrementalHoareTripleChecker [46 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 3151.33ms Time] [2021-11-12 22:52:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2021-11-12 22:52:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3200. [2021-11-12 22:52:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2524 states have (on average 1.7024564183835182) internal successors, (4297), 3173 states have internal predecessors, (4297), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:52:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4351 transitions. [2021-11-12 22:52:06,118 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4351 transitions. Word has length 64 [2021-11-12 22:52:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:06,119 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 4351 transitions. [2021-11-12 22:52:06,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4351 transitions. [2021-11-12 22:52:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:52:06,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:06,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:06,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:06,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:06,333 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-12 22:52:06,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:06,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140576444] [2021-11-12 22:52:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:06,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:06,335 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:06,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-12 22:52:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:06,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:52:06,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:06,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:52:06,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-12 22:52:06,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 22:52:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:06,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:06,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:06,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140576444] [2021-11-12 22:52:06,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140576444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:06,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:06,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:52:06,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933761583] [2021-11-12 22:52:06,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:06,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:52:06,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:52:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:52:06,884 INFO L87 Difference]: Start difference. First operand 3200 states and 4351 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:11,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:11,443 INFO L93 Difference]: Finished difference Result 3199 states and 4349 transitions. [2021-11-12 22:52:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:11,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:52:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:11,447 INFO L225 Difference]: With dead ends: 3199 [2021-11-12 22:52:11,447 INFO L226 Difference]: Without dead ends: 3199 [2021-11-12 22:52:11,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:11,448 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 4 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3872.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4487.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:11,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4601 Invalid, 2301 Unknown, 0 Unchecked, 11.66ms Time], IncrementalHoareTripleChecker [1 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 4487.71ms Time] [2021-11-12 22:52:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2021-11-12 22:52:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3199. [2021-11-12 22:52:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2524 states have (on average 1.701664025356577) internal successors, (4295), 3172 states have internal predecessors, (4295), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:52:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4349 transitions. [2021-11-12 22:52:11,489 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4349 transitions. Word has length 67 [2021-11-12 22:52:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:11,489 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 4349 transitions. [2021-11-12 22:52:11,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:11,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4349 transitions. [2021-11-12 22:52:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:52:11,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:11,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:11,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-12 22:52:11,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:11,721 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:11,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:11,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-12 22:52:11,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:11,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881863277] [2021-11-12 22:52:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:11,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:11,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:11,723 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:11,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 22:52:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:11,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:52:11,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:12,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:52:12,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 22:52:12,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:52:12,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 22:52:12,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 22:52:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:12,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:12,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:12,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881863277] [2021-11-12 22:52:12,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881863277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:12,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:12,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:52:12,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055779342] [2021-11-12 22:52:12,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:12,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:52:12,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:52:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:12,499 INFO L87 Difference]: Start difference. First operand 3199 states and 4349 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 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) [2021-11-12 22:52:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:26,891 INFO L93 Difference]: Finished difference Result 3198 states and 4347 transitions. [2021-11-12 22:52:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 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) Word has length 67 [2021-11-12 22:52:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:26,895 INFO L225 Difference]: With dead ends: 3198 [2021-11-12 22:52:26,895 INFO L226 Difference]: Without dead ends: 3198 [2021-11-12 22:52:26,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:52:26,896 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 3 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12953.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14275.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:26,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5512 Invalid, 3111 Unknown, 0 Unchecked, 18.73ms Time], IncrementalHoareTripleChecker [2 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 14275.90ms Time] [2021-11-12 22:52:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-12 22:52:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3198. [2021-11-12 22:52:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2522 states have (on average 1.7022204599524187) internal successors, (4293), 3171 states have internal predecessors, (4293), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:52:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4347 transitions. [2021-11-12 22:52:26,923 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4347 transitions. Word has length 67 [2021-11-12 22:52:26,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:26,924 INFO L470 AbstractCegarLoop]: Abstraction has 3198 states and 4347 transitions. [2021-11-12 22:52:26,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 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) [2021-11-12 22:52:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4347 transitions. [2021-11-12 22:52:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:52:26,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:26,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:26,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:27,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:27,152 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-12 22:52:27,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:27,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905423362] [2021-11-12 22:52:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:27,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:27,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:27,154 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:27,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-12 22:52:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:27,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:52:27,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:27,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:52:27,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:52:27,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 22:52:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:27,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:27,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:27,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905423362] [2021-11-12 22:52:27,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905423362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:27,622 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:27,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:52:27,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886129592] [2021-11-12 22:52:27,622 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:27,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:52:27,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:52:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:52:27,623 INFO L87 Difference]: Start difference. First operand 3198 states and 4347 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:32,134 INFO L93 Difference]: Finished difference Result 3197 states and 4344 transitions. [2021-11-12 22:52:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:32,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-12 22:52:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:32,138 INFO L225 Difference]: With dead ends: 3197 [2021-11-12 22:52:32,139 INFO L226 Difference]: Without dead ends: 3197 [2021-11-12 22:52:32,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:32,139 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 4 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3832.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4423.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:32,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4596 Invalid, 2298 Unknown, 0 Unchecked, 11.78ms Time], IncrementalHoareTripleChecker [1 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 4423.42ms Time] [2021-11-12 22:52:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2021-11-12 22:52:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2021-11-12 22:52:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 2522 states have (on average 1.7010309278350515) internal successors, (4290), 3170 states have internal predecessors, (4290), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:52:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4344 transitions. [2021-11-12 22:52:32,202 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4344 transitions. Word has length 67 [2021-11-12 22:52:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:32,202 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 4344 transitions. [2021-11-12 22:52:32,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4344 transitions. [2021-11-12 22:52:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:52:32,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:32,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:32,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:32,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:32,417 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-12 22:52:32,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:32,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477437059] [2021-11-12 22:52:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:32,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:32,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:32,419 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:32,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-12 22:52:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:32,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:52:32,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:32,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:52:32,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 22:52:32,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:52:32,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 22:52:32,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 22:52:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:32,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:33,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:33,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477437059] [2021-11-12 22:52:33,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477437059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:33,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:33,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:52:33,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989833289] [2021-11-12 22:52:33,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:33,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:52:33,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:52:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:33,141 INFO L87 Difference]: Start difference. First operand 3197 states and 4344 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 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) [2021-11-12 22:52:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:47,260 INFO L93 Difference]: Finished difference Result 3196 states and 4341 transitions. [2021-11-12 22:52:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 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) Word has length 67 [2021-11-12 22:52:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:47,266 INFO L225 Difference]: With dead ends: 3196 [2021-11-12 22:52:47,266 INFO L226 Difference]: Without dead ends: 3196 [2021-11-12 22:52:47,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:52:47,267 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 4 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12738.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5516 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14003.40ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:47,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5516 Invalid, 3099 Unknown, 0 Unchecked, 18.48ms Time], IncrementalHoareTripleChecker [1 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 14003.40ms Time] [2021-11-12 22:52:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2021-11-12 22:52:47,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3196. [2021-11-12 22:52:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2519 states have (on average 1.7018658197697498) internal successors, (4287), 3169 states have internal predecessors, (4287), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 22:52:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4341 transitions. [2021-11-12 22:52:47,305 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4341 transitions. Word has length 67 [2021-11-12 22:52:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:47,305 INFO L470 AbstractCegarLoop]: Abstraction has 3196 states and 4341 transitions. [2021-11-12 22:52:47,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 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) [2021-11-12 22:52:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4341 transitions. [2021-11-12 22:52:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 22:52:47,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:47,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:47,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:47,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:47,538 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2062362287, now seen corresponding path program 1 times [2021-11-12 22:52:47,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:47,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517836034] [2021-11-12 22:52:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:47,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:47,541 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:47,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-12 22:52:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:47,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:52:47,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:47,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:48,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:48,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517836034] [2021-11-12 22:52:48,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517836034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:48,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:48,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:52:48,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858011099] [2021-11-12 22:52:48,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:48,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:48,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:48,122 INFO L87 Difference]: Start difference. First operand 3196 states and 4341 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:52:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:48,275 INFO L93 Difference]: Finished difference Result 3206 states and 4357 transitions. [2021-11-12 22:52:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-12 22:52:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:48,283 INFO L225 Difference]: With dead ends: 3206 [2021-11-12 22:52:48,283 INFO L226 Difference]: Without dead ends: 3206 [2021-11-12 22:52:48,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:48,284 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 11 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:48,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3439 Invalid, 46 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 106.29ms Time] [2021-11-12 22:52:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-11-12 22:52:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3206. [2021-11-12 22:52:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3206 states, 2527 states have (on average 1.7012267510882468) internal successors, (4299), 3178 states have internal predecessors, (4299), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (31), 24 states have call predecessors, (31), 27 states have call successors, (31) [2021-11-12 22:52:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 4357 transitions. [2021-11-12 22:52:48,325 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 4357 transitions. Word has length 75 [2021-11-12 22:52:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 3206 states and 4357 transitions. [2021-11-12 22:52:48,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:52:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 4357 transitions. [2021-11-12 22:52:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 22:52:48,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:48,327 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:48,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:48,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:48,541 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash -110653553, now seen corresponding path program 1 times [2021-11-12 22:52:48,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:48,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180589804] [2021-11-12 22:52:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:48,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:48,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:48,543 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:48,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-12 22:52:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:48,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:52:48,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:48,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:49,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:49,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180589804] [2021-11-12 22:52:49,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180589804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:49,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [681150363] [2021-11-12 22:52:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:49,210 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:52:49,212 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:52:49,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-12 22:52:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:49,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:52:49,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:49,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:49,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [681150363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:49,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812603949] [2021-11-12 22:52:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:49,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:49,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:49,865 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:49,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-12 22:52:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:50,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:52:50,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:50,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:50,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812603949] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:50,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:52:50,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 22:52:50,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575793725] [2021-11-12 22:52:50,424 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:52:50,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:52:50,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:52:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:52:50,425 INFO L87 Difference]: Start difference. First operand 3206 states and 4357 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:52:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:50,966 INFO L93 Difference]: Finished difference Result 3220 states and 4377 transitions. [2021-11-12 22:52:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:52:50,967 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-12 22:52:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:50,974 INFO L225 Difference]: With dead ends: 3220 [2021-11-12 22:52:50,974 INFO L226 Difference]: Without dead ends: 3214 [2021-11-12 22:52:50,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:52:50,975 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 38 mSDsluCounter, 8570 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 10290 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.08ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:50,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 10290 Invalid, 199 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [39 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 292.08ms Time] [2021-11-12 22:52:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-11-12 22:52:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3212. [2021-11-12 22:52:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 2533 states have (on average 1.6999605211212) internal successors, (4306), 3184 states have internal predecessors, (4306), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (31), 24 states have call predecessors, (31), 27 states have call successors, (31) [2021-11-12 22:52:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 4364 transitions. [2021-11-12 22:52:51,015 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 4364 transitions. Word has length 77 [2021-11-12 22:52:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:51,016 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 4364 transitions. [2021-11-12 22:52:51,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:52:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 4364 transitions. [2021-11-12 22:52:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 22:52:51,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:51,017 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:51,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:51,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:51,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:51,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:51,631 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 22:52:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash 977680719, now seen corresponding path program 2 times [2021-11-12 22:52:51,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:51,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398091431] [2021-11-12 22:52:51,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:52:51,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:51,633 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:51,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-12 22:52:52,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:52:52,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:52:52,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:52:52,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:52,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:52,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:52,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398091431] [2021-11-12 22:52:52,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398091431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:52,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1588874290] [2021-11-12 22:52:52,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:52:52,650 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:52:52,650 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:52:52,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-12 22:52:53,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:52:53,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:52:53,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:52:53,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:53,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:53,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1588874290] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:53,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252292325] [2021-11-12 22:52:53,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:52:53,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:53,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:53,729 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:53,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81e8e442-a86c-446b-bfad-bdf60fa51cc7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-12 22:53:13,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:53:13,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:53:13,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:53:13,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:13,992 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:53:13,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-12 22:53:14,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:54:45,981 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:54:45,982 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-12 22:54:45,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 81 [2021-11-12 22:54:46,587 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 22:54:46,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 40 [2021-11-12 22:54:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:46,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:48,690 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-12 22:54:48,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 65 [2021-11-12 22:56:43,250 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))))))) (_ bv1 1))))) is different from false [2021-11-12 22:59:18,211 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-12 22:59:18,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 115 [2021-11-12 22:59:21,327 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) is different from false [2021-11-12 22:59:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 15 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-12 22:59:40,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252292325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:59:40,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:59:40,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-12 22:59:40,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423168264] [2021-11-12 22:59:40,002 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:59:40,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-12 22:59:40,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-12 22:59:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1483, Unknown=168, NotChecked=166, Total=1980 [2021-11-12 22:59:40,004 INFO L87 Difference]: Start difference. First operand 3212 states and 4364 transitions. Second operand has 45 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 22:59:44,980 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-12 23:01:17,713 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))))))))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))))))) (_ bv1 1))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr456|) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-12 23:01:53,113 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (= (_ bv2 32) |c_#Ultimate.C_memset_#t~loopctr456|) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))))) (_ bv1 1))))) (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))))))) (_ bv1 1)))))) is different from false [2021-11-12 23:01:55,135 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))))))) (_ bv1 1))))) (= (_ bv3 32) |c_#Ultimate.C_memset_#t~loopctr456|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1)))))) is different from false [2021-11-12 23:01:57,157 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_86| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1))))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))))) (_ bv1 1))))) (= (_ bv4 32) |c_#Ultimate.C_memset_#t~loopctr456|)) is different from false [2021-11-12 23:01:59,173 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_87| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_86| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_87| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv5 32) |c_#Ultimate.C_memset_#t~loopctr456|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1)))))) is different from false [2021-11-12 23:03:27,566 WARN L227 SmtUtils]: Spent 10.09s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)